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RA 24 751/06.98 1/22 RA 24 751/12.95 Replaces: 05.94 4/2 and 4/3-Way Directional Control Valves Pilot Operated Model 4WEH Externally Piloted, Model 4 WH Features: Solenoid pilot operated directional valves (WEH) Hydraulic pilot operated directional valves (WH) Mounts on standard ISO 4401-5, 7, 8 or 10, NFPA T 3.5.1 M R1 and ANSI B 93.7 D 05, D 07, D 08 or D10 interfaces For subplates, see data sheets RA 45 045 ... RA 45 060, may be ordered separately 3-position spring centered (sizes 10 to 32) 3-position spring or hydraulic centering (sizes 16, 25 and 32) 2-position hydraulic or spring offset (sizes 10 to 32) Wet pin AC or DC solenoids as required Manual overrides standard (WEH) Individual solenoid plug-in connectors or central wiring box to NEMA 4 specifications, (see data sheet RA 08 000) Optional meter-in or meter-out pilot choke option Optional stroke limiter for main spool (size 10) Optional stroke limiter and/or spool position indicator upon request (Size 16 or 32), see data sheet RA 24 830 Optional mechanical or indicator limit switches on main spool position, upon request, see data sheet RA 24 830 "P" port pilot pressure insert (sizes 16 to 32), for open center spools H/A/D 5559/96• Model 4WEH 10 .-4X/..6A... with plug-in connector K 4091/13 Model 4WEH 22E-7X/..6A..N..Z4.. K 3477/2 Model H-4WEH 25 E-6X/..6A..N..S..Z4.. K 3481/4 Model 4WH 32..-6X/.. Size 10 to 32 up to 5100 PSI (350 bar) up to 290 GPM (1100 L/min)

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  • RA 24 751/06.98

    1/22

    RA24 751/12.95

    Replaces: 05.94

    4/2 and 4/3-Way Directional Control ValvesPilot Operated Model 4WEH

    Externally Piloted, Model 4 WH

    Features: Solenoid pilot operated directional valves (WEH) Hydraulic pilot operated directional valves (WH) Mounts on standard ISO 4401-5, 7, 8 or 10, NFPA T 3.5.1 M

    R1 and ANSI B 93.7 D 05, D 07, D 08 or D10 interfaces For subplates, see data sheets RA 45 045 ... RA 45 060,

    may be ordered separately 3-position spring centered (sizes 10 to 32) 3-position spring or hydraulic centering (sizes 16, 25 and 32) 2-position hydraulic or spring offset (sizes 10 to 32) Wet pin AC or DC solenoids as required Manual overrides standard (WEH) Individual solenoid plug-in connectors or central wiring box to

    NEMA 4 specifications, (see data sheet RA 08 000) Optional meter-in or meter-out pilot choke option Optional stroke limiter for main spool (size 10) Optional stroke limiter and/or spool position indicator upon

    request (Size 16 or 32), see data sheet RA 24 830 Optional mechanical or indicator limit switches on main spool

    position, upon request, see data sheet RA 24 830 "P" port pilot pressure insert (sizes 16 to 32), for open center

    spools

    H/A/D 5559/96Model 4WEH 10 .-4X/..6A... with plug-in connector

    K 4091/13Model 4WEH 22E-7X/..6A..N..Z4..

    K 3477/2Model H-4WEH 25 E-6X/..6A..N..S..Z4..

    K 3481/4Model 4WH 32..-6X/..

    Size 10 to 32 up to 5100 PSI (350 bar) up to 290 GPM (1100 L/min)

  • RA 24 751/06.98

    2/22

    Functional description

    Model H-4WEH 25E6X/ ...

    10

    Model 4WHConnection plate

    Directional Controls Model 4WEHDirectional valves Model 4WEH... are solenoid pilot operatedspool type valves. In the standard version, 3-position spools arespring centered, while 2-position spools are hydraulically offset. Aspring offset two-position, and hydraulically centered three-position, option is also available for most sizes. Directional controlvalves control the start, stop and direction of fluid flow.3-Position Valves,Example 4WEH 22 E-7X/6...In spring centered versions, the pilot valve vents both chambers(6) to tank in center position. This allows return springs (3) to centerspool (2) with respect to housing (1). Pilot valve (4) is supplied viapassage (7), either internally from main port "P" or externallythrough pilot port "X". When a solenoid is energized, one of the twoend caps (6) is pressurized, while the other is drained to tank. Mainspool (2) moves to a shifted position, (flow pattern "P" to "A" and"B" to "T" or "P" to "B" and "A" to "T"), depending on which solenoid(5) is energized. Please refer to symbols on page 6, 7, and 8 forexact flow patterns/solenoid relationships. Pilot valve (4) can beinternally drained through main port "T" or externally drainedthrough pilot port "Y". Manual overrides are provided to operatethe valve without electrically energizing the solenoid.For three-position valves (except sizes 10 and 22), a hydrauliccentered option is available (not shown). In this model, hydrauliccentering requires both end cap chambers (6) be pressurized inthe non-energized condition. An "L" drain port (not shown) isprovided through the main valve interface.

    2-Position Valves, Example 4WEH 22C7X/6...In this model, the main spool (2) is normally hydraulically offset bya 2-position pilot valve (4). The end cap chambers (6) are suppliedwithout springs (3). The pilot valve may be a 2-position, singlesolenoid (spool type "D"); 2-position, double solenoid (spool type"D/O"); or double solenoid with detent (spool type "D/OF"). Pleaserefer to data sheet RA 23 178 for additional information on the pilotvalve. A spring offset, 2-position main spool (not shown) is alsoavailable. This option assures the position of the main spool (2)during start-up and is particularly intended to be used withexternally piloted systems, where the main pumps are startedbefore the pilot oil supply system.Directional Controls Model 4WH...Directional control valves Model 4WH... are identical to Model4WEH... except that the solenoid operated pilot valve (4) isreplaced by a cover plate (10). The cover plate connects pilot port"X" to chamber (6) on "A" port side and pilot port "Y" to chamber"6" on the "B" port side. Pilot pressure on port "X" provides shiftedposition "a", while pilot pressure on port "Y" provides shiftedposition "b". During system design, please consider the following:To achieve center position, the spring centered version requiresventing both end cap chambers (6). The pressure centeredversion requires pressurization of both end cap chambers (6); andtwo-position hydraulically offset versions, spool (2) position canonly be assured by maintaining a pilot pressure on either "X" orport "Y".

    T A XP B Y

    D

    C

    A

    DBB

    A

    1

    2

    3

    6

    7

    6

    3

    88

    5.2 5.1

    4 9AB

    C

  • RA 24 751/06.98

    3/22

    Functional description

    99

    5.2 5.1

    4 10

    T A XP B Y

    7

    6

    3.1

    1

    2

    3.2

    8

    L12

    B A

    Model 4WEH 16 H...

    4/3-way directional valve with pressure centring of the maincontrol spool, type 4WEHHThe main control spool (2) in the main valve is held in the neutralposition by pressurisation of the two front faces. A centring sleeve(12) is supported in the housing and holds the spool in position.By removing the pressure from one of the spool ends, the maincontrol spool (2) is moved to the shifted position.The unloaded spool area displaces the returning pilot oil via thepilot valve into the Y channel (external).

  • RA 24 751/06.98

    4/22

    XP

    XP

    3

    32

    P

    T

    P

    X Y

    T2

    Y

    1

    T

    YX

    2 1

    P T

    T

    P T

    T

    X Y

    1

    P

    X

    P T

    YX

    PT

    2 1

    4WEH

    All Rexroth solenoid pilot operated directional valves are fieldconvertable from external to internal pilot or drain. This requiresremoving or replacing internal plugs as shown in sectional views onthis page. For plug location within the sectional views, please referto the appropriate installation drawing. Since the method of pilotingis designated by model code, nameplates should be correctedwhen conversions are made.4WEH/ (no designation = external pilot and external drain)This model is externally piloted via port "X" and externally drainedvia port "Y". All internal plugs (10), (11) are installed.4WEH/...E (E = internal pilot and external drain)Pilot fluid is supplied internally from "P", while externally drainedthrough port "Y". Port "X" in the subplate must be plugged. Toconvert valve Model 4WEH 16 ..., the port "X" side end cap must beremoved. Spool (see section c-c) with O-ring seal is removed androtated around the vertical axis. The valve is re-assembled by re-installing the spool and replacing the end cap. Torque on bolts t = 27lb-ft (37 Nm).4WEH/...T (T = external pilot and internal drain)This model is externally piloted through port "X" and internallydrained to port "T". Port "Y" in the subplate must be plugged.4WEH/...ET (ET = internal pilot and internal drain)On this model, pilot fluid supply is internal from port "P" and thedrain is internal through port "T". Both ports "X" and "Y" in thesubplate are plugged.Note: See RA 45 054 (size 10), RA 45 056 (size 16), RA 45 058 (size 22

    and 25), and RA 45 060 (size 32) for subplate availability andport sizes.

    Item (1) and (2) M6 plug, requires a 3 mm allen wrenchPilot orifice insert (option B08, B10, B12, B15)To limit maximum flow, orifice inserts are optionally available.Primarily, the orifice insert is intended to prevent flow rates inexcess of the maximum performance data of the pilot valve (seepage 9). For this purpose the insert is installed in the "P" porthowever, will fit any of the ports, allowing for design flexibility.

    Size 16 (Please refer to page 19 for sectional location)

    Pilot fluid supply Pilot fluid drainexternal: 2 plugged external: 1 pluggedinternal: 2 open internal: 1 open

    Pilot fluid supply Pilot fluid drainexternal: 2 plugged external: 1 pluggedinternal: 2 open internal: 1 open

    Pilot valveSection B BSection A A, see page 18

    Main valve

    Pilot valve

    Size 10 Size 32

    Pilot fluid supply Pilot fluid drainexternal: 2 plugged external: 1 pluggedinternal: 2 open internal: 1 open

    Size 25 (Model 4W.H 25 .6X/)Section F F, see page 21 Section G G

    Pilot valve

    CoverMain valve

    Pilot valve,model with orifice insert,B10, B12, ...

    Main valve

    Main valvePilot valve

    Pilot fluid supply Pilot fluid drainexternal: 2 plugged external: 1 pluggedinternal: 2 open internal: 1 open

    Size 25 (Model 4W.H 22 .7X/)

    Cover

    Pilot fluid supply

    Section C CSection D D, see page 19

    Y T

    1

    Main valve

    Pilot fluid supplyexternal: P pluggedinternal: P openPilot fluid drainexternal: 1 pluggedinternal: 1 open

    Section E E,see page 20

    Section H H,see page 22

  • RA 24 751/06.98

    5/22

    Pilot fluid supplyPilot choke adjustment (option S or S2)The shifting time of the main valve (1) can be adjusted by using asandwich mounted throttle valve with reverse free flow check (12),model Z2FS 6 (data sheet RA 27 506). Turning adjustment (13)clockwise will increase the shifting time.Conversion from option "S" meter-in (13) to option "S2" meter-out (14)requires removal of the pilot valve (4). The O-ring plate (15) remainswith the main valve housing (1), while the throttle valve is rotatedaround the longitudinal axis. Pilot valve (4) is then re-installed.Tightening torque for bolts (16) is 6.5 lb-ft(8.9 Nm).Pilot pressure reducing valve (option "D3")To achieve smoother shifts with internally piloted valves, reduceinternal pilot pressure to minimum values, and optimize the pilotchoke, meter-out throttle (S2). Option "D3", model ZDR 6 DP2-5x/75YM sandwich mounted reducing valve (see data sheetRA 26 569) can be adjusted from approximately 30 PSI (2 bar) to 1000PSI (75 bar). A pressure setting of 200 PSI (14 bar) to 400 PSI (28 bar)is usually adequate.Fixed ratio pilot pressure reducing valve (option "D1")Either the pilot pressure reducing valve option "D3" or fixed ratio pilotpressure reducing valve (17) must be used if pilot pressure will exceed3625 PSI (250 bar). The fixed ratio reducing valve (option "D1")reduces the pilot pressure to the pilot valve at a fixed ratio of 1:0.66.For example, at 5000 PSI (350 bar) port "P" pressure the pilot pressurewould be reduced to:5000 PSI (350 bar) x 0.66 = 3300 PSI (228 bar).Please note:The minimum pilot pressures stated on page 9, must be increased by1.515 when the fixed ratio pilot pressure valve is applied.Port "P" pilot pressure insert (option P 4.5 and P 7)(not available for size 10, order sandwich plate Model: Z1S 10 P3-3X S01)For internally piloted vaves with open or tandem center spools (typesC, F, G, H, P, T, V, Z, S), minimum pilot pressure requirements can beachieved by using a pilot pressure insert (18) in port "P" of the mainvalve. This design permits the main valve to be internally piloted andinternally drained. The pressure drop of the pilot pressure insert (seegraph below) is in addition to the presure drop of the main valve (seeperformance curves). The cracking pressure of a "P 4.5" pilot pressureinsert is approximately 65 PSI (4.5 bar). If applying a pressurereducing valve, option D1, or D3, cracking pressure should be 100 PSI(7 bar). Use the "P7" pilot pressure insert.

    16 4

    15

    12

    1

    14

    13

    Model 4WEH 10..4X/S or S216

    17

    Model 4WEH 10..4X//..D1

    Pres

    sure

    dro

    p p

    in

    (PSI

    ) bar

    Flow qv in GPM (L/min)

    (14)

    (12)

    (10)

    (8)

    (6)

    (4)

    (2)

    0

    (100) (200) (300) (400) (500) (600) (700)

    1

    23 4

    20 40 60 80 100 120 140 160 180

    20

    40

    60

    80

    100

    120

    140

    160

    180

    200

    1 Size 162 Size 223 Size 254 Size 32

    P

    18

    Main valve

    Subplate

    Size P 4.5 P716 RR00302628 RR0030550022 RR00315596 RR0031812025 RR00303717 RR0030607832 RR00317066

    Pilot pressure inserts

    p-qv Curves of Pilot Pressure Insert "P4.5", measured at = 190 SUS (41 mm2/s) and t = 122 F (50 C)

  • RA 24 751/06.98

    6/22

    4100 PSI (280 bar)= no code

    5100 PSI (350 bar)= H

    4-way (Four service ports) = 4Operation:Solenoid operated pilot valve = WEHHydraulically operated = WHSize:10 (D 05) = 1016 (D 07) = 1622 (D 08)6) = 2225 (D 08)7) = 2532 (D 10) = 32Spool return: 9) (main body)Spring return (size 10 to 32) = no codeHydraulic return (size 10 to 32)* = H*(Size 10 and 22 with spool types C, D, K, Z, Y only)Spool type (ex. C, E, etc.) for possiblespool configuration, see page 63-position valve = no code3-position valve with position "a" only10) = A3-position valve with position "b" only10) = BSeries:Size 10 Series 40 to 49* = 4XSize 25, 32 Series 60 to 69* = 6XSize 16, 22 Series 70 to 79* = 7X*externally interchangeableVariation to the pilot valve:For 2-position valves with 2 solenoids:Only possible with spool types C, D, K, Z, andhydraulic spool return "H" in the main valveWithout spring return = OWithout spring return with detent = OFPilot valve WE 6 (D 03), with wet-pin solenoids = 6AWith removable solenoids = 6EAC voltage: 1) 120 Volts AC, 60 Hz* = W 120 - 60 120 Volts AC, 50/60 Hz = W 110 8) DC solenoid with rectifier = W 110 R

    for AC operation (only for voltages 110 Vand with Z 55 (Z5) plug-in connector*

    DC voltage: 1)(Ex. 24 V DC = G 24)* = G + voltage*For other available voltages and frequencies see RA 23 177Without manual overrides = no codeWith manual overrides1) (standard 6A)11) = NWith protected manual overrides1) (standard 6E) = N9Externally piloted, externally drained5) = no codeInternally piloted, externally drained2; 5) = EInternally piloted, internally drained2) = ETExternally piloted, internally drained5) = T(On sizes 16, 25, 32 models "ET" and "T" with hydraulically centeredthree-position valves, are only possible if: ppilot 2 x ptank + ppilot min

    Ordering code

    Further details to bewritten in clear text

    no code = NBR seals,suitable for petroleum oils

    (HM, HL, HLP)V = FPM seals, suitablefor phosphate ester (HFD-R)

    no code = without pilotpressure control valve

    D1 = Fixed ratio pressurereducing valve1; 3)

    D3 = Adjustable pressurereducing valve1; 3)

    (recommended withmeter-out pilot chokes)

    no code = Without pilotpressure insert

    P4.5 = po = 65 PSI (4.5 bar)4; 3)P7 = po = 100 PSI (7 bar)4; 3)(For spool types C, F, G, H, P, T, V, Z, S)

    Orifice insertno code = Without orifice insertB 08 = Orifice 0.031" (0.8 mm)B 10 = Orifice 0.039" (1.0 mm)B 12 = Orifice 0.047" (1.2 mm)B 15 = Orifice 0.059" (1.5 mm)

    Auxiliary accessoriesMechanical limit switch, stroke limiters,

    end position monitor, etc. see RA 24 830Auxiliary accessories

    Inductive limit switch, see RA 24 830Electrical connections: to data

    sheet RA 08000, meets or exceeds NEMA 41)Central electrical connections

    DA = Terminal box with 1/2" NPTconduit connection

    DAL = Terminal box with 1/2" NPTconduit connection and light(s)

    DZA = Terminal box withangled plug connector

    DZAL = Terminal box with angled plugconnector and light(s)

    ANSI B 93.55 M plug-in type connections(without female end)

    DK23 = Terminal box w/3-pin connector (single solenoid)DK25 = Terminal box w/5-pin connector (double solenoid)DK23L = Terminal box w/3-pin connector & light (single sol.)DK25L = Terminal box w/5-pin connector & light (single sol.)

    Individual solenoid plug-in electrical connectorsFor cable or conduit, (1/2" NPT)

    K4 = without angled plug connector(s)Z45 = angled plugZ55 = large angled plugZ55L = large angled plug with light

    no code = without pilot choke adjustmentS = With meter-in pilot choke adjustmentS2 = With meter-out pilot choke adjustment

    *

    1 2 3 4 5 6 6.5 7 9 10 11 12 13 14 15 16 17 19 20 21 22 23

    4

    ppilot = pilot pressureppilot min = minimum pilot pressure

    1) Enter only for solenoid operated valves, Model WEH2) With internal piloting, note the minimum pilot pressure values, see pg. 93) When combining a pressure reducing option D1, D3 with a

    pilot pressure insert, use Model P7 only4) For size 10 valves a pilot pressure sandwich plate Model Z1S 10 P3-3X S01

    may be used5) With externally piloted or drained size 10 valves, order sandwich plates (ZDB..., ZDR...,

    Z2FS...) with "SO 30" designation at the end of the model code, for X & Y through ports

    ptank = Tank pressurepo = Cracking pressure

    6) Model 4W.H 22 7X...(standard model)7) Model 4W.H 25 6X...(high flow model)8) Removable solenoids (6E) are dual frequency9) Defines method to return to main spool10) Defines 3-position spool, i.e. J, E, W, M where only one side is required. See pg. 6

    Example 4WEH22-EA-7X/6E11) For WE6.6X/E pilots, N is a covered override with rubber boot

  • RA 24 751/06.98

    7/22

    1) Example: spool "E", 2-position valve with position "a" only(solenoid on side A)Ordering example:H-4WEH 16 HEA6X/6AG24NETSZ4..B10..V..

    2) Spools only for size 16, 323) Spools only for size 10, 16, 22, 25

    A B

    a ba, X b, Y

    P T

    A B

    a ba, X b, Y

    P T

    a bTP

    a b

    A B

    a bTP

    a b

    A B

    a bTP

    a b

    A B

    a bTP

    a b

    A B

    ../..

    ..H../..

    ../..

    ..H../..

    ..H../O

    ..H../OF

    = C (H)

    = D (E)

    = K (J)

    = Z (V)

    A B

    a ba, X b, Y

    P T

    a bTP

    a b

    A B

    a bTP

    a b

    A B

    ../..

    ../..

    ..H../..

    = Y

    A B

    a ba, X b, Y

    P T

    a bTP

    a b

    A B

    a

    TP

    a 0

    A B

    ../..

    .A *)

    0

    A B

    a ba, y b, X

    P T

    0

    0

    TP

    b0

    A B.B

    b

    a bTP

    a b

    A B

    H../..0

    a

    TP

    a

    A B

    H.A0

    TP

    b0

    A BH.B

    b

    ..H../..

    = L

    = M

    = E 1

    = F

    = G

    = H

    = J

    WEH

    WH

    WH

    WEH

    WH

    WEH

    Spool symbols (to ISO 1219)

    = R

    = T

    = U

    = V 3

    = W

    = P

    = Q

    = S 2

    1)

    2)

    3)

    4WEH.. EA.xx/ = 2-position main valve with single solenoid pilot4WEH.. HD.xx/OF = 2-position main valve with detented pilot, main stage hydraulically offset4WEH.. D.xx/OF = 2-position main valve with detented pilot, main stage spring offset4WEH.. D.xx/ = 2-position main valve with single solenoid pilot, main stage spring offset

  • RA 24 751/06.98

    8/22

    Spool type Flow area in center position in2 (mm2)and flow path valve size

    10 16 22 25 32

    P A

    Q P B A T 0.02 (13) 0.05 (32) 0.121 (78) 0.129 (83) 0.121 (78)B T 0.02 (13) 0.05 (32) 0.121 (78) 0.129 (83) 0.121 (78)P A 0.02 (13) 0.05 (32) 0.113 (73) 0.129 (83) 0.113 (73)

    V P B 0.02 (13) 0.05 (32) 0.113 (73) 0.129 (83) 0.113 (73)A T 0.02 (13) 0.05 (32) 0.13 (84) 0.129 (83) 0.13 (84)B T 0.02 (13) 0.05 (32) 0.13 (84) 0.129 (83) 0.13 (84)P A

    W P B A T 0.004 (2.4) 0.009 (6) 0.015 (10) 0.022 (14) 0.015 (10)B T 0.004 (2.4) 0.009 (6) 0.015 (10) 0.022 (14) 0.015 (10)

    Flow area: spools Q, V, W in center position

    Simplified and detailed symbols for3-position valves (to DIN ISO 1219)

    Model 4WEH..H../..

    Model 4WEH..H../..E..

    Spring centered valve

    Model 4WEH../..

    Model 4WEH../..E..

    Model 4WEH../..ET..

    Model 4WEH../..T..

    Model 4WEH..H../..ET.. and Model 4WEH..H../..T.. notpossible as 3-position valves

    X =

    in

    tern

    al; Y

    =

    ext

    erna

    lX

    = in

    tern

    al; Y

    =

    in

    tern

    alX

    = ext

    erna

    l; Y

    = in

    tern

    al

    A B

    X Y TP

    a b

    a 0 ba, X b, Y

    a b

    X TP

    a b0

    Y

    A B

    A B

    X Y TP

    a b

    a 0 ba, X b, Y

    a b

    TP

    a b0

    Y

    A B

    A B

    X Y TP

    a b

    a 0 ba, X b, Y

    a bTP

    A B

    a b0

    A B

    X Y TP

    a b

    a 0 ba, X b, Y

    a b

    TPX

    A B

    a b0

    A B

    X Y TP

    a b

    a 0 ba, X b, Y

    L

    A B

    X Y TP

    a b

    a 0 ba, X b, Y

    L

    a b

    TP Y

    A B

    L

    a b0

    a b

    X TP Y

    A B

    L

    a b0

    Hydraulically centered valve (sizes 16, 25, 32 only)

    X =

    ext

    erna

    l; Y

    = e

    xter

    nal

  • RA 24 751/06.98

    9/22

    Model 4WEH.../... Model 4WEH..H.../... Model 4WEH..H.../OF...Model 4WEH..H.../O...

    Model 4WEH.../...E... Model 4WEH..H.../...E... Model 4WEH..H.../O...E... Model 4WEH..H.../OF...E...

    Model 4WEH.../...ET... Model 4WEH..H.../...ET... Model 4WEH..H.../O...ET... Model 4WEH..H.../OF...ET...

    Model 4WEH.../...T... Model 4WEH..H.../...T... Model 4WEH..H.../O...T... Model 4WEH..H.../OF...T...

    X =

    ext

    erna

    lY

    = ext

    erna

    lX

    = in

    tern

    alY

    = in

    tern

    alX

    = in

    tern

    alY

    = ext

    erna

    lX

    = ext

    erna

    lY

    = in

    tern

    al

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    A B

    X Y TP

    a b

    a ba, X b, Y

    a b

    X TP

    a b

    Y

    A B

    a b

    X TP

    a b

    Y

    A B

    a b

    X TP

    a b

    Y

    A B

    a b

    X TP

    a b

    Y

    A B

    a b

    TP

    a b

    A B

    Y

    a b

    TP

    a b

    A B

    Y

    a b

    TP

    a b

    A B

    Y

    a b

    TP

    a b

    Y

    A B

    a bTP

    a b

    A B

    a bTP

    a b

    A B

    a bTP

    a b

    A B

    a b

    TP

    a b

    A B

    X

    a b

    TP

    a b

    A B

    X

    a b

    TP

    a b

    A B

    X

    a b

    TP

    a b

    A B

    X

    a bTP

    a b

    A B

    Simplified and detailed symbols for 2-position valves (to DIN ISO 1219)

  • RA 24 751/06.98

    10/22

    Maximum permissable operating pressure Ports P, Model 4WEH PSI (bar) 4060 (280) 4060 (280) 4060 (280) 4060 (280)

    A, B Model H-4WEH PSI (bar) 5075 (350) 5075 (350) 5075 (350) 5075 (350) 5075 (350) Port T (externally drained) PSI (bar) 4570 (315) 3625 (250) 3625 (250) 3625 (250) 3625 (250)

    (internally drained) PSI (bar) 2320 (160) with DC solenoidsPSI (bar) 1450 (100) with AC solenoids

    3-position valve hydraulically centered no yes no yes yes Port Y (externally drained)1)

    with DC solenoids, Type E solenoids6) PSI (bar) 3000 (210) 3000 (210) 3000 (210) 3000 (210) 3000 (210)with DC solenoids, Type A solenoids7) PSI (bar) 2320 (160) 2320 (160) 2320 (160) 2320 (160) 2320 (160)with AC solenoids, Type E solenoids6) PSI (bar) 2320 (160) 2320 (160) 2320 (160) 2320 (160) 2320 (160)with DC solenoids, Type A solenoids7) PSI (bar) 1450 (100) 1450 (100) 1450 (100) 1450 (100) 1450 (100)Model 4WH PSI (bar) 3625 (250) 3625 (250) 3045 (210) 3625 (250) 3625 (250)

    Maximum pilot pressure* PSI (bar) 3625 (250) 3625 (250) 3045 (210) 3625 (250) 3625 (250)*for higher pilot pressures a pressure reducing valve is required, see page 4Minimum pilot pressure5) externally piloted, internally drained H-4W 4W

    (applicable with spools: C, F, G, H, P, T, V, Z, S2))3-position valve, spring centered PSI (bar) 145 (10) 175 (12) 180 (12.5) 150 (10.5) 190 (13) 125 (8.5)3-position valve, hydraulically centered PSI (bar) 175 (12) 260 (18) 125 (8.5)2-position valve, with spring offset PSI (bar) 145 (10) 175 (12) 205 (14) 160 (11) 190 (13) 145 (10)2-position valve, with hydraulic offset PSI (bar) 100 (7) 175 (12) 115 (8) 115 (8) 70 (5)

    internally piloted(applicable for spools C, F, G, H, P, T, V, Z, S2)) PSI (bar) 65 (4.5)4) 65 (4.5)4) 65 (4.5)4) 65 (4.5)4) 65 (4.5)4)

    Technical data (For applications outside these parameters, please consult us!)Sizes 10 (D 05) 16 (D 07) 22 (D 08) 25 (D 08) 32 (D 10)

    Hydraulic fluid Petroleum oils (HM, HL, HLP)Phosphate ester fluids (HFD-R)

    Fluid temperature range F (C) NBR seals: 22 to +176 (30 to +80)FPM seals: 4 to +176 (20 to +80)

    Viscosity range SUS (mm2/s) 35 to 2320 (2.8 to 500)Maximum degree of fluid contamination Class 18/15 according to ISO 4406.

    Therefore, we recommend a filter with a minimum retentionrate of 10 75.

    Pilot fluid volume for valve operation 3-position valve, spring centered (in3) cm3 0.124 (2.04) 0.349 (5.72) 0.466 (7.64) 0.866 (14.2) 1.794 (29.4) 2-position valve (in3) cm3 0.249 (4.08) 0.699 (11.45) 0.932 (15.28) 1.733 (28.4) 3.588 (58.8) 3-position valve, hydraulically centered WH WEH WH WEH WH WEH

    from center to position a (in3) cm3 0.173 0.173 0.436 0.436 0.879 0.879(2.83) (2.83) (7.15) (7.15) (14.4) (14.4)

    from position a to center (in3) cm3 0.177 0.35 0.865 0.427 1.794 0.921(2.9) (5.73) (14.2) (7.0) (29.4) (15.1)

    from center to position b (in3) cm3 0.349 0.35 0.865 0.865 1.794 1.794(5.72) (5.73) (14.2) (14.2) (29.4) (29.4)

    from position b to center (in3) cm3 0.173 0.522 1.213 0.35 2.624 0.879(2.83) (8.55) (19.9) (5.7) (43.8) (14.4)

    Pilot fluid flow qv (approx.) for shortest shifting time GPM (L/min) 9.2 (35) 9.2 (35) 9.2 (35) 9.2 (35) 11.9 (45)Weight (approx.)

    Valve with 1 solenoid lbs (kg) 14.1 (6.4) 18.3 (8.3) 25.4 (11.5) 38.8 (17.6) 89.3 (40.5)Valve with 2 solenoids, spring centered lbs (kg) 15 (6.8) 19 (8.6) 26.2 (11.9) 39.7 (18) 90.4 (41)Valve with 2 solenoids, hydraulically centered lbs (kg) 15 (6.8) 19 (8.6) 26.2 (11.9) 41.9 (19) 90.4 (41)hydraulically operated (4 WH) lbs (kg) 12.1 (5.5) 16.1 (7.3) 23.1 (10.5) 36.4 (16.5) 87.1 (39.5)pilot choke adjustment lbs (kg) 1.8 (0.8) 1.8 (0.8) 1.8 (0.8) 1.8 (0.8) 1.8 (0.8)pressure ratio valve lbs (kg) 1.1 (0.5) 1.1 (0.5) 1.1 (0.5) 1.1 (0.5) 1.1 (0.5)

    Mounting position optional; valve with hydraulic spool return H(spools C, D, K, Z, Y) horizontal

    1) In a 3-position valve, hydraulic centering is only possible if ppilot 2 x ptank + ppilot min2) Spool S only available with size 16 valve3) Internally piloted valves with spool types C, F, G, H, P, T, V, Z will only shift if the flow

    from P to T in the center position (3-position valves) or during spool crossover(2-position valves) is large enough that the pressure drop from P to T reaches aminimum of 95 PSI (6.5 bar), which is required to shift the pilot valve.

    4) For spools C, F, G, H, P, T, V, Z, S2) (with pilot pressure insert or considerably high flows)5) External pilot for closed center valves is greater than tandem center valves, required

    due to pressure and flow influences during shift.6) For pilot valves with removeable solenoids, 6E7) For pilot valves with wet pin solenoids, 6A

  • RA 24 751/06.98

    11/22

    1) Operating time of valve from center to shifted position (for AC and DC solenoids)with a pilot pressure of PSI (bar) AC 1015 (70) DC AC 2030 (140) DC AC 3045 (210) DC AC 3625 (250) DC 3-position valves, spring centered ms 50 85 40 75 35 70 30 65 2-position valves ms 120 160 100 130 85 120 70 105 3-position valves Solenoid operated "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b"

    hydraulically centered ms 30 35 55 65 30 35 55 65 25 30 50 60 25 30 50 60Operating time of valve from shifted back to center position 3-position valves, spring centered ms 40 to 55 for AC / 40 for DC 2-position valves ms 120 125 85 100 85 90 75 80 3-position valves, from "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b"

    hydraulically centered ms 3050 30 35 3050 30 35 3050 30 35 3050 30 35

    1) Operating time of valve from center to shifted position (for AC and DC solenoids)

    with a pilot pressure of PSI (bar) AC 510 (35) DC AC 1015 (70) DC AC 2030 (140) DC AC 3045 (210) DC 3-position valves, spring centered ms 50 100 40 80 35 65 30 60 2-position valves ms 110 160 90 110 75 95 70 85Operating time of valve from shifted back to center position 3-position valves, spring centered ms 35 to 50 for AC / 35 for DC 2-position valves ms 90105 95 6580 70 5065 55 4560 50

    1) Operating time of valve from center to shifted position (for AC and DC solenoids)with a pilot pressure of PSI (bar) AC 725 (50) DC AC 2175 (150) DC AC 3625 (250) DC 3-position valves, spring centered ms 35 65 30 60 30 58 2-position valves ms 45 65 35 55 30 50 3-position valves solenoid operated "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b"

    hydraulically centered ms 30 30 65 65 25 25 55 63 20 25 55 60Operating time of valve from shifted back to center position 3-position valves, spring centered ms 30 to 45 for AC / 30 for DC 2-position valves ms 4560 45 3550 35 3045 30 3-position valves, from "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b"

    hydraulically centered ms 2035 20 2035 20 2035 20

    1) Operating time of valve from center to shifted position (for AC and DC solenoids)with a pilot pressure of PSI (bar) AC 1015 (70) DC AC 2030 (140) DC AC 3045 (210) DC AC 3625 (250) DC 3-position valves, spring centered ms 30 65 25 60 20 55 15 50 2-position valves ms 35 80 30 75 25 70 20 65Operating time of valve from shifted back to center position 3-position valves, spring centered ms 30 2-position valves ms 35 40 30 35 25 30 20 25

    Size

    10

    1) Operating time of valve from center to shifted position (for AC and DC solenoids)with a pilot pressure of PSI (bar) AC 725 (50) DC AC 2175 (150) DC AC 3625 (250) DC 3-position valves, spring centered ms 65 80 50 90 35 105 2-position valves ms 100 130 75 100 60 115 3-position valves, Solenoid operated "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b"

    hydraulically centered ms 55 60 100 105 40 45 85 95 35 40 85 95Operating time of valve from shifted back to center position 3-position valve, spring-centered ms 60 to 75 for AC / 50 for DC 2-position valve ms 115130 90 85100 70 6580 65 3-position valve, from "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b"

    hydraulically centered ms 3065 30 40 6090 30 30 105155 50 501)

    Shifting time = from start of energization of the pilot valve solenoid, to start of opening of control land in main valve.

    Size

    16

    Size

    22

    Size

    25

    Size

    32

    Technical data, operating time1) (For applications outside these parameters, please consult us!)

  • RA 24 751/06.98

    12/22

    Spool Shifted positiontype P A P B A T B T

    E, Y, D 2 2 4 5F 1 4 1 4

    G, T 4 2 2 6H, C 4 4 1 4J, K 1 2 1 3

    L 2 3 1 4M 4 4 3 4P 4 1 3 4

    Q, V, W, Z 2 2 3 5R 2 2 3 5U 3 3 3 4

    p-qv curves, Model 4WEH 10, measured at = 190 SUS (41 mm2/s) and t = 122 F (50C)

    Pres

    sure

    dro

    p p

    in

    PSI

    (bar)

    Flow qv in GPM (L/min)

    Power limits, Model 4WEH 10, measured at = 190 SUS (41 mm2/s) and t = 122 F (50 C)General:Because of silting, the shifting function of the valves isdependent upon filtration. To obtain the maximum flow valuesshown, full filtration of 25 m is recommended. The flowforces acting within the valve also influence performance. In4-way valves, the data provided is for applications with 2directions of flow (flow from P to A and an equal, simultane-ous return flow from B to T) (see left). If only one direction offlow is required, for example, when a 4-way valve has oneport plugged, or unbalanced flows from large rod cylinders,permissible flow in critical cases can be considerably lower.Performance limits measured with solenoids at operatingtemperature, 10% undervoltage and without tank portpressure.

    Flow qV in GPM (L/min)*Operating pressure in PSI (bar)

    spool types 2900 (200) 3625 (250)4570 (315)E, J, L, M, Q, R, U, V, W, * 42 (160)C, D, K, Z, YH * 42 (160) 40 (150) 32 (120)G, T * 42 (160) 42 (160) 37 (140)F, P * 42 (160) 37 (140) 32 (120)

    1

    23

    4

    567(11)

    (10)

    (8)

    (6)

    (4)

    (2)

    0

    (40) (80) (120) (160)10 20 30 40 42

    20

    40

    60

    80

    100

    120

    140

    Spool Central positiontype A T B T P T

    F 3 6G, T 7

    H 1 3 5L 3 P 7 5U 4

  • RA 24 751/06.98

    13/22

    AT BA(12)(10)

    (14)

    (8)(6)(4)(2) 20

    406080

    100120140160180200

    0

    (50) (150) (200) (250)(100) (300)50403020 706010

    Spool type E Spool type R

    Flow qv in GPM (L/min)

    Pres

    sure

    dro

    p p

    in

    PSI

    (bar)

    Flow qv in GPM (L/min)

    Pres

    sure

    dro

    p p

    in

    PSI

    (bar)

    p-qv Curves, Model 4WEH 16, measured at = 190 SUS (41 mm2/s) and t = 122 F (50C)

    All other spool types Spool type G and TSpool type S

    Flow qv in GPM (L/min)

    Pres

    sure

    dro

    p p

    in

    PSI

    (bar)

    Flow qv in GPM (L/min)

    Pres

    sure

    dro

    p p

    in

    PSI

    (bar)

    Power limits, Model 4WEH 16, measured at = 190 SUS (41 mm2/s) and t = 122 F (50C)

    Flow in GPM (L/min) *3-position valve: spring centered

    PSI (bar)Spool types 1015 (70) 2030 (140) 3045 (210) 4060 (280) 5075 (350)E, H, J, L, M, 80 (300) 80 (300) 80 (300) 80 (300) 80 (300)Q, U, W, R *F, P * 80 (300) 66 (250) 48 (180) 45 (170) 40 (150)G, T * 80 (300) 80 (300) 63 (240) 55 (210) 50 (190)S 80 (300) 80 (300) 80 (300) 66 (250) 58 (220)V 80 (300) 66 (250) 55 (210) 80 (300) 48 (180)

    3-position valve: hydraulically centered(at minimum pilot pressure of 230 PSI (16 bar)

    for all spool types 80 (300) 80 (300) 80 (300) 80 (300) 80 (300)

    See General on page 11 also.Note:

    When using hydraulically centered 4/3 valves above the givenpower limits, a higher pilot pressure is required.

    With an operating pressure of p = 5075 PSI (350 bar) and a flowof qv = 80 GPM (300 L/min), a pilot pressure of approx. 230 PSI(16 bar) is required.

    1) The flow values shown are obtained with a minimum pilotpressure of 175 PSI (12 bar).

    (12)(10)

    (14)

    (8)(6)(4)(2)

    0

    (50) (150) (200) (250)(100) (300)

    PAPB

    AT

    BT

    50403020 706010

    20406080

    100120140160180200

    BA

    PA

    (12)(10)

    (14)

    (8)(6)(4)(2) 20

    406080

    100120140160180200

    0

    (50) (150) (200) (250)(100) (300)50403020 706010

    AT

    PB

    PAAT

    BT

    PT(12)(10)

    (14)

    (8)(6)(4)(2) 20

    406080

    100120140160180200

    0

    (50) (150) (200) (250)(100) (300)50403020 706010

    PB

    The max. flow of these valves is therefore only dependent onthe actual pressure drop across the valve in a particular system.

    Flow in GPM (L/min) *2-position valve: spring offset

    PSI (bar)Spool types 1015 (70) 2030 (140) 3045 (210) 4060 (280) 5075 (350)C, D, Y, K, Z * 80 (300) 80 (300) 80 (300) 80 (300) 80 (300)

    1)

    2) Flow in GPM (L/min) *2-position valve: spring offset

    PSI (bar)Spool types 1015 (70) 2030 (140) 3045 (210) 4060 (280) 5075 (350)C * 80 (300) 80 (300) 80 (300) 80 (300) 80 (300)D, Y * 80 (300) 71 (270) 69 (260) 66 (250) 61 (230)K * 80 (300) 66 (250) 63 (240) 61 (230) 55 (210)Z 80 (300) 69 (260) 50 (190) 48 (180) 42 (160)

    2-position valve: hydraulically offsetHC, HD, HK 80 (300) 80 (300) 80 (300) 80 (300) 80 (300)HZ, HYPilot pressure insert (P4.5) required for internally pilotedmodels, with spool types H, F, P, G, S and for spool typesV, C, Z and flows up to 42 GPM (160 L/min).

    2) The flow values shown are limiting values at which thespring would return the valve to its starting positon shouldpilot pressure fail.

  • RA 24 751/06.98

    14/22

    p-qv Curves, Model 4WEH 22, measured at = 190 SUS (41 mm2/s) and t = 122 F (50C)

    Flow qv in GPM (L/min)

    Spool Shifted positiontype PA PB AT BT

    E 2 2 1 4F 1 2 1 2G 2 2 2 4H 2 2 1 3J 2 2 1 3L 2 2 1 2M 2 2 1 4

    Spool Shifted positiontype PA PB AT BT

    P 2 2 1 4Q 2 2 1 4R 1 2 1 U 2 2 1 4V 2 2 1 4W 2 2 1 3T 2 2 2 4

    Spool Neutral positiontype AT BT PT

    F 4G 6H 2L 4 P 6T 5U 6

    Pres

    sure

    dro

    p p

    in

    PSI

    (bar)

    1

    2

    3

    45 6

    (10)(8)

    (6)

    (4)(2)

    0

    (100) (200) (300) (400)

    (12)

    (14)

    (450)

    BASpool type

    200

    20

    18016014012010080604020

    40 60 80 100 120

    Flow in GPM (L/min) *3-position valve

    PSI (bar)Spool types 1015 (70) 2030 (140) 3045 (210) 4060 (280) 5075 (350)E, H, J, L, M, 119 (450) 119 (450) 119 (450) 119 (450) 119 (450)Q, U, W, R *H * 119 (450) 119 (450) 80 (300) 69 (260) 61 (230)G * 106 (400) 92 (350) 67 (250) 53 (200) 47 (180)F * 119 (450) 71 (270) 46 (175) 34 (130) 29 (110)V * 119 (450) 80 (300) 63 (240) 58 (220) 42 (160)T * 106 (400) 80 (300) 63 (240) 53 (200) 42 (160)P * 119 (450) 71 (270) 47 (180) 45 (170) 29 (110)

    2-position valve with main spool spring offsetC, D, K, Z, Y * 119 (450) 119 (450) 119 (450) 119 (450) 119 (450)

    2-position valve with main spool spring offsetC * 119 (450) 119 (450) 84 (320) 66 (250) 53 (200)D,Y * 119 (450) 119 (450) 119 (450) 106 (400) 84 (320)K * 119 (450) 57 (215) 40 (150) 32 (120) 26 (100)Z * 92 (350) 80 (300) 77 (290) 69 (250) 42 (160)

    See General on page 11 also.

    1) The flow values shown are obtained with a minimum pilotpressure of 160 or 203 PSI (11 or 14 bar).

    2) The flow values shown are limiting values at which thespring would return the valve to its starting positon shouldpilot pressure fail.

    1)

    2)

    Pilot pressureinsert (P4,5)required for

    internally pilotedmodels withthese spools

    Spool type:C-G-TF-G-H

    Spool type:V, Z toapprox.47 GPM

    (180 L/min)

    Flow in GPM (L/min) *2-position valve no springs on main spool

    PSI (bar)Spool types 1015 (70) 2030 (140) 3045 (210) 4060 (280) 5075 (350)HC-HD-HK 119 (450) 119 (450) 119 (450) 119 (450) 119 (450)HZ-HY *HC../O.. * 119 (450) 119 (450) 119 (450) 119 (450) 119 (450)HD../O.. *HK../O.. *HZ../O.. *HC../OF.. * 119 (450) 119 (450) 119 (450) 119 (450) 119 (450)HD../OF.. *HK../OF.. *HZ../OF.. *

    Pilot pressureinsert (P4.5)required for

    internally pilotedmodels withthese spools

    Spool type:HC/HZ toapprox.47 GPM

    (180 L/min)

    Power limits, Model 4WEH 22, measured at = 190 SUS (41 mm2/s) and t = 122 F (50C)

  • RA 24 751/06.98

    15/22

    Spool Shifted positiontype PA PB AT BT

    E 1 1 1 3F 1 4 3 3G 3 1 2 4H 4 4 3 4J 2 2 3 5L 2 2 3 3M 4 4 1 4P 4 1 1 5Q 2 2 3 5R 2 1 1 U 2 1 1 6V 4 4 3 6W 1 1 1 3T 3 1 2 4

    Flow qV in GPM (L/min) *3-position valve: spring centered

    PSI (bar)Spool types 1015 (70) 2030 (140) 3045 (210) 4060 (280) 5075 (350)E, L, M, * 185 185 185 185 185Q, U, W (700) (700) (700) (700) (700)G, T * 106 (400) 106 (400) 106 (400) 106 (400) 106 (400)F * 172 (650) 145 (550) 114 (430) 87 (330) 79 (300)H * 185 (700) 172 (650) 145 (550) 106 (400) 95 (360)J * 185 (700) 185 (700) 172 (650) 158 (600) 137 (520)P * 172 (650) 145 (550) 114 (430) 87 (330) 79 (300)V * 172 (650) 145 (550) 106 (400) 92 (350) 82 (310)R * 185 (700) 185 (700) 185 (700) 172 (650) 153 (580)

    3-position valve hydraulically centered(at minimum pilot pressure of 260 PSI (18 bar))

    E, F, H, J * 185 185 185 185 172L, M, P, Q (700) (700) (700) (700) (650)R, U, V, WG, T * 106 (400) 106 (400) 106 (400) 106 (400) 106 (400)

    at > 435 PSI (30 bar) pilot pressureG, T * 185 (700) 185 (700) 185 (700) 185 (700) 172 (650)

    Flow qV in GPM (L/min) *2-position valve with main spool spring offset 1

    PSI (bar)Spool types 1015 (70) 2030 (140) 3045 (210) 4060 (280) 5075 (350)C, D, K, Z, Y* 185 (700) 185 (700) 185 (700) 185 (700) 172 (650)

    2-position valveno springs on main spool

    HC, HD, HK 185 185 185 185 185HZ, HY * (700) (700) (700) (700) (700)HC../O.. *HD../O.. * 185 185 185 185 185HK../O.. * (700) (700) (700) (700) (700)HZ../O.. *HC../OF.. *HD../OF.. * 185 185 185 185 185HK../OF.. * (700) (700) (700) (700) (700)HZ../OF.. *

    2-position valve with mainspool spring offset

    C * 185 (700) 185 (700) 185 (700) 185 (700) 172 (650)D, Y * 185 (700) 172 (650) 106 (400) 92 (350) 79 (300)K * 185 (700) 172 (650) 111 (420) 98 (370) 84 (320)Z * 185 (700) 185 (700) 172 (650) 127 (480) 106 (400)

    See General on page 11 also.

    Power limits, Model 4WEH 25, measured at = 190 SUS (41 mm2/s) and t = 122 F (50C)

    p-qv Curves, Model 4WEH 25, measured at = 190 SUS (41 mm2/s) and t = 122 F (50C)Pr

    essu

    re d

    rop

    p in

    PSI

    (bar)

    Flow qv in GPM (L/min)

    Pilot pressureinsert (P 4.5)required for

    internally pilotedModels withthese spools

    Z toapprox.47 GPM

    (180 L/min)

    1) The flow values shown are obtained with a minimum pilotpressure of 190 PSI (13 bar).

    2) The flow values shown are limiting values at which thesprings would return the valve to its starting positionshould pilot pressure fail.

    Spool type:F-G-H

    P-T

    V to approx.47 GPM

    (180 L/min)

    Spool type:C

    1

    2

    3

    456

    (10)

    (8)

    (6)

    (4)

    (2)

    0

    (100) (200) (300) (400)

    (12)

    (14)

    (500)

    78

    (600) (650)

    BASpool type R

    200

    160

    180

    160

    140

    120

    100

    80

    60

    40

    20

    14012010080604020

    Spool type G, center position P TSpool type T, center position P T

    0

    1)

    2)

    Pilot pressureinsert (P 4.5)required for

    internally pilotedModels withthese spools

  • RA 24 751/06.98

    16/22

    Power limits, Model 4WEH 32, measured at = 190 SUS (41 mm2/s) and t = 122 F (50C)

    p-qv Curves, Model 4WEH 32, measured at = 190 SUS (41 mm2/s) and t = 122 F (50C)

    1) only with spool type R2) not with spool type R

    Spool types E, R and W

    All other spools

    Pres

    sure

    dro

    p p

    in

    PSI

    (bar)

    Flow qv in GPM (L/min)

    Pres

    sure

    dro

    p p

    in

    PSI

    (bar)

    Flow qv in GPM (L/min)

    Pres

    sure

    dro

    p p

    in

    PSI

    (bar)

    Flow qv in GPM (L/min)

    Spool types G and T

    PB

    PT

    BT

    PAAT

    (120) (360) (480) (600)(240) (720) (840)(960) (1080)40 80 120 160 200 240 280

    (12)(10)

    (14)

    (8)(6)(4)(2)

    0

    (16)(18)

    240

    200

    160

    120

    80

    40

    (120) (360) (480) (600)(240) (720) (840)(960) (1080)40 80 120 160 200 240 280

    (12)(10)

    (14)

    (8)(6)(4)(2)

    0

    (16)(18)

    240

    200

    160

    120

    80

    40

    Flow qV in GPM (L/min) *3-position valve: spring centered

    PSI (bar)Spool types 1015 (70) 2030 (140) 3045 (210) 4060 (280) 5075 (350)E, J, L, M, * 290 275 227 198 179Q, R, U, W (1100) (1040) (860) (750) (680)V * 290 (1100) 264 (1000) 179 (680) 132 (500) 119 (450)H, G, F, * 238 (900) 238 (900) 221 (800) 172 (650) 119 (450)T, P

    3-position valve: hydraulically centered(at minimum pilot pressure of 125 PSI (8.5 bar))

    for all spool 290 275 227 198 179types (1100) (1040) (860) (750) (680)

    Flow qV in GPM (L/min) *2-position valve with main spool spring offset

    PSI (bar)Spool types 1015 (70) 2030 (140) 3045 (210) 4060 (280) 5075 (350)C, D, K, Z, Y* 290 (1100) 275 (1040) 227 (860) 198 (750) 179 (680)

    Pilot pressure insert (P 4.5) required for internally pilotedmodels with spool types C, G, T, F, P, H

    For spool types V and Z for flows up to 47 GPM (180 L/min)C * 290 (1100) 275 (1040) 227 (860) 211 (800) 185 (700)D, Y * 290 (1100) 275 (1040) 143 (540) 127 (480) 111 (420)K * 290 (1100) 275 (1040) 227 (860) 132 (500) 119 (450)Z * 290 (1100) 275 (1040) 227 (860) 185 (700) 172 (650)

    2-position valve with main spool, hydraulically offsetHC, HD, HK 290 (1100) 275 (1040) 227 (860) 198 (750) 179 (680)HZ, HY*

    See General on page 11 also.Note:

    When using hydraulically centered 4/3 valves above the givenpower limits, a higher pilot pressure is required.

    2) The flow values shown are limiting values at which thesprings would return the valve to its starting positionshould pilot pressure fail.

    1)2)

    1) The flow values shown are obtained with a minimum pilotpressure of 145 PSI (10 bar).

    (12)(10)

    (14)

    (8)(6)(4)(2)

    0

    (120) (360) (480) (600)(240) (720)

    (16)(18)

    (840)(960) (1080)

    240

    200

    160

    120

    80

    40

    40 80 120 160 200 240 280

    AT

    BA 1)

    BT 2)

    PAPB

  • RA 24 751/06.98

    17/22

    Unit dimensions, Model 4WEH 10... : dimensions in inches (millimeters)1 Main valve

    2 Pilot valve Model 4WE 6, to data sheet RA 23 178with angled plug(s) Z45 for other electrical connections, see data sheet RA 08 000

    4.1 Pilot valve Model 4WE 6 D6X/.E... is used with the main spools C, D, K, Z and HC, HD, HK, HZPilot valve Model 4WE 6 JA6X/.E... is used with the main spools EA, FA etc.Pilot valve Model 4WE 6 MA6X/.E... is used with the main spool HEA, HFA etc.

    4.2 Pilot valve Model 4WE 6 Y6X/.E... is used with the main spool Y and HYPilot valve Model 4WE 6 JB6X/.E... is used with the main spools EB, FB etc.Pilot valve Model 4WE 6 MB6X/.E... is used with the main spool HEB, HFB etc.

    4.3 Pilot valve Model 4WE 6 J6X/.E... is used with all 3 position spring centered spoolsPilot valve Model 4WE 6 M6X/.E... is used with all 3 position hydraulic centered spools

    5.1 Solenoid a, grey plug5.2 Solenoid b, black plug8 Optional manual override, see operational data, Page 6, Item 2, or RA 23 178.12 Optional pilot choke adjustment, Model Z2FS 6-2-4X/1QV, see RA 27 50617 Optional pressure reducing valve option "D1" shown, see RA 26 570 for option "D3"18 Height of interconnecting cover plate for hydraulically operated valves19 Machined valve mounting face20 Interface port pattern related to directional valve main stage21 Nameplate for pilot valve22 Nameplate for complete valve23 O-Rings for ports Size 10 Size 16 Size 22 and 25 Size 32

    P, A, B, T 12x2 22x2.5 27x3 42x3X, Y 10.82x1.78 10x2 19x3 19x3

    R-Rings for ports Size 10 Size 16 Size 22 and 25 Size 32P, A, B, T 13x1.6x2.0 22.53x2.3x2.62 27.8x2.6x3.0 42.5x3x3X, Y 11.18x1.6x1.78 10x2x2 19x3x3 19x3x3

    24 3-position vaves, sring centered2-position valves, hydraulically offset

    25 2-position valves, spring offset(spool types C, D, K, Z)

    26 3-position valves, hydraulically centered27 2-position valves, spring offset (spool type Y)Note: A/F = wrench size across flats

    Required surface finish ofinterface when mounting thevalve without our surplate

    0.0004/4.0 in0.01/100 mm

    32 (Rmax 4)

  • RA 24 751/06.98

    18/22

    Porting pattern to ISO 4401-5 NFPA T 3.5.1 M R1 and ANSI B93.7 D 05Subplates, see data sheet RA 45 054;Internally piloted, internally drained valves only:G 534/05 (3/4" NPT);G 534/12 (SAE-12; 1 1/16-12);G 535/05 (3/4" NPT);G 535/12 (SAE-12; 1 1/16-12);G 536/05 (1" NPT);G 536/12 (SAE-16; 1 5/16-12);For description of numbered items, see page 17

    Unit dimensions, Model 4WEH 10 :dimensions in inches (millimeters)

    1.37

    8 (35

    )

    1.73 (44)

    0.6

    (15)

    3.27

    (83)

    1.57

    5(40

    )0.

    984

    (25)

    3.38

    6 (86

    )

    2.87

    4 (73

    )

    5.61 (142.5)6.26 (158)

    9.09 (231)7.79 (198) 0.65 (16.5)

    6.57 (167) 1.24 (31.5)

    2.126 (54) 2.22 (56.5) 0.433 (11) 0.26 (6.6)

    2.76

    (70)

    1.81

    1 (46

    )0.

    905

    (23)

    1.062 (27)

    0.53

    1 (13

    .5)

    4.251 (108)

    PA B

    TX Y

    AT B TP

    X Y

    T

    AT P B T

    AT P B T

    Pg 11

    T

    B AP

    4.14.2

    22

    4 4

    4.3

    1

    12

    18

    23

    19

    AB

    AB

    20

    5.2 21 5.1

    8

    0.47

    2 (12

    )

    Valve Mounting Bolts4) 1/4-20 UNC x 1 3/4" (M6 x 45 mm)(UNC bolt kit # US00 833 367)Socket head cap screws,SAE grade 8 or betterTightening torque 11.5 lb-ft (15.5 Nm)Subplates and valve mounting bolts must beordered separatelyNote:Pilot valve dimensions for designation 6A; for 6E(removable solenoids), see data sheet RA 23 178

  • RA 24 751/06.98

    19/22

    Porting pattern to ISO 4401-7 NFPA T 3.5.1 M R1 and ANSIB 93.7 D 07Subplates, see data sheet RA 45 056;G 172/05 (3/4" NPT);G 172/12 (SAE-12; 1 1/16-12);G 174/05 (1" NPT);G 174/12 (SAE-16; 1 5/16-12);G 174/08 (3/4" ISO flanged ports);For description of numbered items, see page. 17

    Unit dimensions, Model 4WEH 16 : dimensions in inches and (millimeters)

    Required surface finish ofinterface when mounting thevalve without our subplate

    Valve Mounting Bolts2) 1/4-20 UNC x 2 1/4" (M6 x 60 mm)Tightening torque 11.5 lb-ft (15.5 Nm)4) 3/8-16 UNC x 2 1/4" (M10 x 60 mm)Tightening torque 55 lb-ft (75 Nm)(UNC bolt kit # US00 833 395)Socket head cap screws,SAE grade 8 or betterSubplates and valve mounting bolts must be ordered separatelyNote: Pilot valve dimensions for designation 6A; for 6E(removable solenoids), see data sheet RA 23 178

    0.0004/4.0 in0.01/100 mm

    32 (Rmax 4)

    1.69

    3 (43

    )0.

    118

    (3)0.

    472

    (12)

    0.826 (21)5.59 (142)

    3.7

    (94)

    0.6 (15)

    336

    (85.5)

    1.57

    5 (40

    )0.

    787

    (20)

    BA

    PT P X

    LY

    13

    19

    0.118 (3)

    20

    Pg 11B A

    4.51 (114.5)

    A B Y

    0.75 (19)2.72 (69) 4.15 (105.5)

    8.31 (211)9.31 (236.5)

    9.25 (235)9.25 (235)

    3.78

    (96)

    0.47

    2 (12

    )

    85.1

    18

    215.2

    44.3

    122

    18232527

    24

    26

    9.19 (233.5)

    1.342 (34.1) 0.433 (11) 0.26 (6.6)

    0.709 (18) 0.433 (11)

    XP

    B YA1.969 (50)

    4 (101.6)

    3.8

    (91)

    0.06

    3 (1.

    6) 1.378

    (35)

    2.75

    2 (69

    .9)

    0.06

    3 (1.

    6)

    T

    B AP

  • RA 24 751/06.98

    20/22

    Unit dimensions, Model 4WEH 22 : dimensions in inches (millimeters)

    0.6

    (15)

    0.59

    (15)

    0.689 (17,5)7.087 (180)

    4.80

    3 (12

    2)

    3.031 (77)5.118 (130)

    3.62

    2 (92

    )1.

    811

    (46)

    4.61

    (117

    )2.087 (53)

    0.551 (14) 0.787 (20)

    0.551 (14) 7.6 (193)9.49 (241)

    4.33

    1 (11

    0)

    1.61

    4 (41

    )

    0.02 (0.5)

    0.16

    (4)

    0.236 (6)

    A BX

    PTX

    BAX

    T P Y

    3.27

    (83)

    1.57

    5 (40

    )

    0.78

    7 (20

    )

    Pg 11

    T

    B AP

    8214

    44.3

    1

    1222

    19

    AB

    5.61 (142.5)6.26 (159)

    AT P B T

    4.14.2 AB

    3.9 (99)

    20

    Porting pattern to ISO 4401-8 NFPA T 3.5.1 M R1 and ANSIB 93,7 D 08Subplates, see data sheet RA 45 058;G 153/05 (1" NPT);G 153/12 (SAE-16; 1 5/16-12);G 154/05 (1 1/4" NPT);G 154/12 (SAE-20; 1 5/8-20);G 156/05 (1 1/2" NPT);G 156/12 (SAE-24; 1 7/8-20);For description of numbered items, see page 17

    Valve Mounting Bolts6) 1/2-13 UNC x 2 1/2" (M12 x 60 mm)(UNC bolt kit # US00 833 387)Socket head cap screws,SAE grade 8 or betterTightening torque 83 lb-ft (112 Nm)Subplates and valve mounting bolts must be ordered separatelyNote:Pilot valve dimensions for designation 6A; for 6E (removablesolenoids), see data sheet RA 23 178

    Required surface finish ofinterface when mounting thevalve without our subplate

    0.0004/4.0 in0.01/100 mm

    32 (Rmax 4)

  • RA 24 751/06.98

    21/22

    Unit dimensions, Model 4WEH 25 : dimensions in inches (millimeters)

    Required surface finish ofinterface when mounting thevalve without our subplate

    Porting pattern to ISO 4401-8 NFPA T 3.5.1 M R1 and ANSI B93,7 D 08Subplates, see data sheet RA 45 058;G 153/05 (1" NPT);G 153/12 (SAE-16; 1 5/16-12);G 154/05 (1 1/4" NPT);G 154/12 (SAE-20; 1 5/8-20);G 156/05 (1 1/2" NPT);G 156/12 (SAE-24; 1 7/8-20);G 154/21 (1 1/4" ISO flanged ports)For description of numbered items, see page 17

    Valve Mounting Bolts6) 1/2-13 UNC x 2 1/2" (M12 x 60 mm)(UNC bolt kit # US00 833 387)Socket head cap screws,SAE grade 8 or betterTightening torque 83 lb-ft (112 Nm)Subplates and valve mounting bolts must be ordered separatelyNote:Pilot valve dimensions for designation 6A; for 6E (removablesolenoids), see data sheet RA 23 178

    BAX

    T P Y

    AXB

    T P Y

    0.55

    1 (14

    )

    0.827 (21)7.677 (195)

    4.72

    4 (12

    0)

    3.62

    2 (92

    )4.

    61 (1

    17)

    5.118 (130)3.031 (77)

    2.089 (53) 0.787 (20) 0.551 (14)

    0.75 (19) 8.86 (225)11.69 (297)

    12.78 (324.5)1.08 (27.5)

    13.07 (332)12.78 (324.5)

    1.28 (32.5)

    4.96

    1 (12

    6)

    1.61

    4 (41

    )0.

    16 (4

    )

    0.236 (6)

    0.6

    (15)

    3.27

    (83)

    1.57

    5 (40

    )

    0.78

    7 (20

    )

    Pg 11

    T

    AP

    B

    8214

    44.3

    1

    12

    20

    22

    23

    25

    2724

    26

    AB

    5.61 (142.5)6.26 (159)

    AT P B T

    4.14.2 AB

    3.9 (99)

    19

    0.0004/4.0 in0.01/100 mm

    32 (Rmax 4)

  • RA 24 751/06.98

    22/22

    Unit dimensions, Model 4WEH 32 : dimensions in inches (millimeters)

    Porting pattern to ISO 4401-10 NFPA T 3.5.1 M R1 and ANSIB 93,7 D 10Subplates, see data sheet RA 45 060;G 157/05 (1 1/2" NPT);G 157/12 (SAE-24; 1 7/8-12);G 158/34 (1 1/2" ISO flanged ports)For description of numbered items, see page 17.

    Valve Mounting Bolts6) 3/4-10 UNC x 3 1/4" (M20 x 80 mm)(UNC bolt kit # US00 833 394)Socket head cap screws,SAE grade 8 or betterTightening torque 295/320 lb-ft (400/430 Nm)Subplates and valve mounting bolts must be ordered separatelyNote:Pilot valve dimensions for designation 6A; for 6E (removablesolenoids), see data sheet RA 23 178

    2.992 (76)

    T

    X

    12.4 (315.5)15.39 (391)

    0.75 (19) 1.299 (33)

    0.866 (22)

    P Y

    X A B

    4.508 (114.5)7.5 (190.5)

    6.26

    (159

    )

    3.13

    (79.5

    )

    7.76

    (197

    )

    0.80

    7 (20

    .5) 0.906 (23)10.118 (257)

    7.87

    4 (20

    0)

    A B

    T P Y

    1.22 (31)

    1.92

    9 (49

    )0.

    16 (4

    )

    11.3 (286.5)

    0.236 (6)14.25 (362)15.39 (391)

    15.98 (406)

    0.846 (21.5)

    5.98

    4 (15

    2)

    3.39 (86)2.24 (57)

    0.6

    (15)

    3.27

    (83)

    1.57

    5 (40

    )

    0.98

    4 (25

    )

    T

    B AP

    Pg 11

    4

    18

    214.2

    4.14.3

    1

    12

    17

    19

    22

    12

    23

    27

    2524 26

    AB

    5.61 (142.5)

    AT P B T

    4.14.2 AB

    20

    Mannesmann Rexroth Corporation Rexroth Hydraulics Div., Industrial, 2315 City Line Road, Bethlehem, PA 18017-2131 Tel. (610) 694-8300 Fax: (610) 694-8467Rexroth Hydraulics Div., Mobile, 1700 Old Mansfield Road, Wooster, OH 44691-0394 Tel. (330) 263-3400 Fax: (330) 263-3333

    All rights reserved Subject to revision Printed in U.S.A.

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