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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 MR1 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 toNEMA 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 uponrequest (Size 16 or 32), see data sheet RA 24 830

– Optional mechanical or indicator limit switches on main spoolposition, upon request, see data sheet RA 24 830

– "P" port pilot pressure insert (sizes 16 to 32), for open centerspools

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)

RA 24 751/06.98

2/22

Functional description

Model H-4WEH 25E6X/ ...

10

Model 4WH…Connection plate

Directional Controls Model 4WEH

Directional 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 4WEH…H

The 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

P

T

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 wrench

Pilot 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 valveSection B – BSection A – A, see page 18

Main valve

Pilot valve

Size 10 Size 32


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


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 S2

16

17

Model 4WEH 10..4X/…/..D1

Pre

ssur

e dr

op ∆

p in

(P

SI)

bar

→

Flow qv in GPM (L/min) →

(14)

(12)

(10)

(8)

(6)

(4)

(2)

0

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

1

2

3 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 P7

16 RR00302628 RR00305500

22 RR00315596 RR00318120

25 RR00303717 RR00306078

32 RR00317066 –

Pilot pressure inserts

∆p-qv Curves of Pilot Pressure Insert "P4.5", measured at ν = 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 Rfor 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 insert

no code = Without orifice insertB 08 = Orifice Ø 0.031" (0.8 mm)B 10 = Orifice Ø 0.039" (1.0 mm)B 12 = Orifice Ø 0.047" (1.2 mm)B 15 = Orifice Ø 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 connectionsDA = Terminal box with 1/2" NPT

conduit connectionDAL = Terminal box with 1/2" NPT

conduit connection and light(s)DZA = Terminal box with

angled plug connectorDZAL = Terminal box with angled plug

connector 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/6E…11) 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 b

TP

a b

A B

a b

TP

a b

A B

a b

TP

a b

A B

a b

TP

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 b

TP

a b

A B

a b

TP

a b

A B

../..

../..

..H../..

= Y

A B

a ba, X b, Y

P T

a b

TP

a b

A B

aTP

a 0

A B

../..

.A *)

0

A B

a ba, y b, X

P T

0

0

TP

b0

A B

.Bb

a b

TP

a b

A B

H../..0

aTP

a

A B

H.A0

TP

b0

A B

H.Bb

..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 in 2 (mm2)

and flow path valve size10 16 22 25 32

P→A – – – – –

QP→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)

VP→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 – – – – –

WP→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 =

inte

rnal

; Y =

ext

erna

lX

= in

tern

al; Y

= in

tern

alX

= e

xter

nal;

Y =

inte

rnal

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 b

TP

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

= e

xter

nal

X =

inte

rnal

Y =

inte

rnal

X =

inte

rnal

Y =

ext

erna

lX

= e

xter

nal

Y =

inte

rnal

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 b

TP

a b

A B

a b

TP

a b

A B

a b

TP

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 b

TP

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 pressure 5)

– 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 ß10 ≥ 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, “6E…”7) 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 60

Operating time of valve from shifted back to center position

– 3-position valves, spring centered ms 40 to 55 for AC / 40 for DC


– 3-position valves, from – "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b"

hydraulically centered ms 30…50 30 35 30…50 30 35 30…50 30 35 30…50 30 35







– 2-position valves ms 90…105 95 65…80 70 50…65 55 45…60 50


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 60



– 2-position valves ms 45…60 45 35…50 35 30…45 30

– 3-position valves, from – "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b"

hydraulically centered ms 20…35 20 20…35 20 20…35 20






– 3-position valves, spring centered ms 30


Siz

e 10


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 95


– 3-position valve, spring-centered ms 60 to 75 for AC / 50 for DC

– 2-position valve ms 115…130 90 85…100 70 65…80 65

– 3-position valve, from – "a" "b" "a" "b" "a" "b" "a" "b" "a" "b" "a" "b"

hydraulically centered ms 30…65 30 40 60…90 30 30 105…155 50 501) Shifting time = from start of energization of the pilot valve solenoid, to start of opening of control land in main valve.

Siz

e 16

Siz

e 22

Siz

e 25

Siz

e 32

Technical data, operating time 1) (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 ν = 190 SUS (41 mm2/s) and t = 122 °F (50°C)

Pre

ssur

e dr

op ∆

p in

PS

I (ba

r) →


Power limits, Model 4WEH 10…, measured at ν = 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 µm 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

A→T B→A(12)

(10)

(14)

(8)

(6)

(4)

(2)20

4060

80

100120

140160180

200

0

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

50403020 706010

Spool type E Spool type R


Pre

ssur

e dr

op ∆

p in

PS

I (ba

r) →


Pre

ssur

e dr

op ∆

p in

PS

I (ba

r) →

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

All other spool types Spool type G and TSpool type S


Pre

ssur

e dr

op ∆

p in

PS

I (ba

r) →


Pre

ssur

e dr

op ∆

p in

PS

I (ba

r) →

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

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)

P→AP→B

A→T

B→T

50403020 706010

20

4060

80

100120

140160

180200

B→A

P→A

(12)

(10)

(14)

(8)

(6)

(4)

(2)20

4060

80

100120

140160180

200

0

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

50403020 706010

A→T

P→B

P→AA→T

B→T

P→T(12)

(10)

(14)

(8)

(6)

(4)

(2)20

4060

80

100

120140160180

200

0

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

50403020 706010

P→B

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


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 offset

HC, HD, HK 80 (300) 80 (300) 80 (300) 80 (300) 80 (300)HZ, HY

Pilot 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



Spool Shifted positiontype P–A P–B A–T B–T

E 2 2 1 4

F 1 2 1 2

G 2 2 2 4

H 2 2 1 3

J 2 2 1 3

L 2 2 1 2

M 2 2 1 4


P 2 2 1 4

Q 2 2 1 4

R 1 2 1 –

U 2 2 1 4

V 2 2 1 4

W 2 2 1 3

T 2 2 2 4

Spool Neutral positiontype A–T B–T P–T

F – – 4

G – – 6

H – – 2

L 4 – –

P – – 6

T – – 5

U – 6 –

Pre

ssur

e dr

op ∆

p in

PS

I (ba

r) →

1

2

3

4

5 6

(10)

(8)

(6)

(4)

(2)

0

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

(12)

(14)

(450)

B→ASpool type

200

20

180

160

140

120

100

80

60

40

20

40 60 80 100 120


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 offset

C, D, K, Z, Y * 119 (450) 119 (450) 119 (450) 119 (450) 119 (450)


C * 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)


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)


RA 24 751/06.98

15/22


E 1 1 1 3

F 1 4 3 3

G 3 1 2 4

H 4 4 3 4

J 2 2 3 5

L 2 2 3 3

M 4 4 1 4

P 4 1 1 5

Q 2 2 3 5

R 2 1 1 –

U 2 1 1 6

V 4 4 3 6

W 1 1 1 3

T 3 1 2 4

Flow qV in GPM (L/min) *


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 * 185 185 185 185 172

L, M, P, Q (700) (700) (700) (700) (650)

R, U, V, W

G, T * 106 (400) 106 (400) 106 (400) 106 (400) 106 (400)

at > 435 PSI (30 bar) pilot pressure

G, T * 185 (700) 185 (700) 185 (700) 185 (700) 172 (650)


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.. * 185 185 185 185 185

HK../O.. * (700) (700) (700) (700) (700)

HZ../O.. *

HC../OF.. *

HD../OF.. * 185 185 185 185 185

HK../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.


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

ress

ure

drop

∆p

in P

SI (

bar)

→


Pilot pressureinsert (P 4.5)required for

internally pilotedModels withthese spools

Z toapprox.47 GPM

(180 L/min)


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)

B→ASpool 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



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

Spool types E, R and W

All other spools

Pre

ssur

e dr

op ∆

p in

PS

I (ba

r) →


Pre

ssur

e dr

op ∆

p in

PS

I (ba

r) →


Pre

ssur

e dr

op ∆

p in

PS

I (ba

r) →


Spool types G and T

P→B

P→T

B→T

P→AA→T

(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



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)



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 offset

HC, 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)


(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

A→T

B→A 1)

B→T 2)

P→AP→B

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 plug

5.2 Solenoid b, black plug

8 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 27 506

17 Optional pressure reducing valve option "D1" shown, see RA 26 570 for option "D3"

18 Height of interconnecting cover plate for hydraulically operated valves

19 Machined valve mounting face

20 Interface port pattern related to directional valve main stage

21 Nameplate for pilot valve

22 Nameplate for complete valve

23 O-Rings for ports Size 10 Size 16 Size 22 and 25 Size 32P, 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 centered

27 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 in

0.01/100 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 05

Subplates , 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 (3

5)

1.73 (44)

0.6

(15)

3.27

(83

)1.

575

(40)

0.98

4(2

5)3.

386

(86)

2.87

4 (7

3)

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)

Ø 0.433 (11)

Ø 0.26 (6.6)

2.76

(70

)1.

811

(46)

0.90

5 (2

3)

1.062 (27)

0.53

1 (1

3.5)

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 (1

2)

Valve Mounting Bolts

4) 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 separately

Note: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 07

Subplates , 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


2) 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 separately

Note: Pilot valve dimensions for designation 6A; for 6E(removable solenoids), see data sheet RA 23 178

0.0004/4.0 in

0.01/100 mm

32(Rmax 4)

1.69

3 (4

3)0.

118

(3)

0.47

2 (1

2)

0.826 (21)

5.59 (142)

3.7

(94)

0.6 (15)

336

(85.

5)

1.57

5 (4

0)

0.78

7 (2

0)

BA

PT P X

LY

13

19

Ø0.118 (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.

472

(12)

85.1

18

215.2

4

4.3

1

22

18232527

24

26

9.19 (233.5)

1.342 (34.1)Ø 0.433 (11)Ø 0.26 (6.6)

Ø 0.709 (18)Ø 0.433 (11)

XP

B YA

1.969 (50)

4 (101.6)

3.8

(91)

0.06

3 (1

.6)

1.37

8 (3

5)

2.75

2 (6

9.9)

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 (1

22)

3.031 (77)

5.118 (130)

3.62

2 (9

2)

1.81

1 (4

6)

4.61

(11

7)2.087 (53)

Ø 0.551 (14)

Ø 0.787 (20)

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

4.33

1 (1

10)

1.61

4 (4

1)

0.02 (0.5)

0.16

(4)

Ø 0.236 (6)

A BX

PTX

BAX

T P Y

3.27

(83

)

1.57

5 (4

0)

0.78

7 (2

0)

Pg 11

T

B AP

8214

4

4.3

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 08


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);



6) 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 separately

Note:Pilot valve dimensions for designation 6A; for 6E (removablesolenoids), see data sheet RA 23 178


0.0004/4.0 in

0.01/100 mm

32(Rmax 4)

RA 24 751/06.98

21/22



Porting pattern to ISO 4401-8 NFPA T 3.5.1 M R1 and ANSI B93,7 D 08


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)



6) 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 separately


BAX

T P Y

AXB

T P Y

0.55

1 (1

4)

0.827 (21)

7.677 (195)

4.72

4 (1

20)

3.62

2 (9

2)

4.61

(11

7)

5.118 (130)

3.031 (77)

2.089 (53) Ø 0.787 (20) Ø 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 (1

26)

1.61

4 (4

1)0.

16 (

4)

Ø 0.236 (6)

0.6

(15)

3.27

(83

)1.

575

(40)

0.78

7 (2

0)

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 in

0.01/100 mm

32(Rmax 4)

RA 24 751/06.98

22/22


Porting pattern to ISO 4401-10 NFPA T 3.5.1 M R1 and ANSIB 93,7 D 10


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.


6) 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 separately


2.992 (76)

T

X

12.4 (315.5)

15.39 (391)

0.75 (19)

Ø 1.299 (33)

Ø 0.866 (22)

P Y

X A B

4.508 (114.5)

7.5 (190.5)

6.26

(15

9)

3.13

(79

.5)

7.76

(19

7)

0.80

7 (2

0.5) 0.906 (23)

10.118 (257)

7.87

4 (2

00)

A B

T PY

1.22 (31)

1.92

9 (4

9)0.

16 (

4)11.3 (286.5)

Ø 0.236 (6)14.25 (362)

15.39 (391)

15.98 (406)

0.846 (21.5)

5.98

4 (1

52)

3.39 (86)

2.24 (57)

0.6

(15)

3.27

(83

)

1.57

5 (4

0)

0.98

4 (2

5)

T

B AP

Pg 11

4

18

214.2

4.1

4.3

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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