Safety & Shut-off BlocksSAB 10/20/32

2

1. DESCRIPTION1.1 GENERAL

The safety and shut-off blockis designed to protect, shut-off, and discharge hydraulicaccumulators or user units.The compact design simplifiesthe hydrualic systemconnection and offers thefollowing advantages.

• minimum space comparedto individual elements

• reduced installation time

• various system connections

• system lockout

It incorporates these features:

1 – pressure release valve

2 – pressure gauge (optional)

3 – shut-off valve

4 – manual bleed valve

5 – 2-way solenoid operatedbleed valve (optional)

In accordance with OSHArequirements for storedhazardous energy, HYDACrecommends the use of itsSafety and Shut-off Block(SAB) with solenoid operatedbleed valve. Use of theHYDAC SAB block in yoursystem satisfies OSHAregulation 29 CFR part 1910for the accumulator.

Circuit Diagram of a HYDAC SAB Block:

1.2 CONSTRUCTIONThe Safety and Shut-off Blockconsists of a valve block, abuilt-in pressure release valve,a main shut-off valve, and amanually operated bleedvalve. In addition, an optionalsolenoid operated bleed valve(open when de-energized)(1

allows automatic release ofthe accumulator or user unitand therefore of the hydraulicsystem in an emergency orduring shut-down. Thenecessary return lineconnection is provided inaddition to the gaugeconnection.

1.3 CONNECTIONSThe Safety and Shut-off Blockhas the following connections:

S – Accumulator Connection

P – System Connection

T – Tank Connection

M1 – Gauge Connection

1.4 TECHNICALSPECIFICATIONS

1.4.1 FluidsMineral oil, hydraulic oil, waterglycol, non-flammable fluids(other fluids upon request)

1.4.2 Temperature (for carbon steel)5º F to 180º F (-15º C to 80º C)

1.4.3 Maximum Working Pressureup to 5800 psi (400 bar)

1.5 STANDARD MODELS1.5.1 Model with manually

operated bleed valveThe basic model code “M”contains a manually operatedbleed valve for manualpressure release of theaccumulator.

Sizes: SAB 10 MSAB 20 MSAB 32 M

1.5.2 Model with solenoidoperated bleed valveThe “E” model Safety andShut-off Block contains asolenoid operated bleed valve(open when de-energized)(1 forautomatic pressure release ofthe accumulator.

Sizes: SAB 10 ESAB 20 ESAB 32 E

1) closed when de-energized on request

3

2. Model Code: SAB Blocks SAB 20 E 1 6 Y 1 — 200 C — S 60 L(also order code)

DesignationSafety and Shut-off Block

Size of main shut-off valve10 = DN 1020 = DN 2032 = DN 32

ModelM= Manual dischargeE = Solenoid operated and manual discharge

Block Material1 = Carbon Steel (standard)3 = Stainless Steel (316)7 = Others

Seal Material2 = NBR (BUNA N)4 = IIR (Butyl)6 = FPM (Viton) (standard)7 = Others

2-Way Solenoid Operated Bleed ValveOperating Function

Y = Normally Open (standard)Z = Normally Closed

Solenoid1 = 24 VDC (standard)2 = 110 VAC – 60 Hz (standard)3 = 220 VAC – 50 Hz4 = 220 VAC – 60 Hz7 = Others

Pressure Relief Valve - Pressure Range200 = up to 2900 PSI315 = up to 4600 PSI400 = up to 5800 PSI(others upon request)

Connection TypeThreaded:

C = SAE (ANSI B 1.1) (BSP system connections (“P”) available, all other connection threads remain SAE)

Flanged (SAB 32 only):E = SAE 2” – 3000 psi (Code 61)F = SAE 1-1/2” – 6000 psi (Code 62)

Adapter (required only for safety and shut-off blocks with threaded connection)SAE: S 60 = 1 1/16”-12UN BSP: S 10 = G3/4”

S 62 = 1 5/8”-12UN S 11 = G1”S 63 = 1 7/8”-12UN S 12 = G1 1/4”S 64 = 3/4”-16UNF S 13 = G2” S 620 = 1 5/8”-12UN S 309 = G2”S 630 = 1 7/8”-12UN

(see section 4 - others upon request)

Locking Device (if required)L

(Not all combinations are available)

4

Type Approximate Weightkg (lbs.)

SAB 10 M 3.6 (8.0)

SAB 10 E 4.0 (8.8)

Dimensions in inchesNote: for “M” Type block the 2-waydirectional valve is replaced with a plug

Size 6

Direct OperatingPressure Relief Valve

5000

6500

4000

3000

2000

1000

6000

300

450

200

100

50

400

500

Ope

ratin

g P

ress

ure

in p

si

Ope

ratin

g P

ress

ure

in b

ar

lowest adjustablepressure

3 151296

10 6050403020

Flow in gpm

Flow in l/min

400

315

200

100

5025

3. DIMENSIONS3.1 TYPE SAB 10 M/E...Cwith direct operating pressure relief valve size 6 (Max. working pressure 5800 psi)

Type Approximate Weightkg (lbs.)

SAB 20 M 6.8 (15.0)

SAB 20 E 7.2 (15.8)

Dimensions in inchesNote: for “M” Type block the 2-waydirectional valve is replaced with a plug

5

5 3025201510

9000

8000

7000

6000

5000

4000

3000

2000

1000

600

500

400

300

200

10050

20 120100806040

630

400

315

200

10050

Size 10

Direct OperatingPressure Relief Valve

Ope

ratin

g P

ress

ure

in p

si

Ope

ratin

g P

ress

ure

in b

ar

lowest adjustablepressure

Flow in gpm

Flow in l/min

3.2 TYPE SAB 20 M/E...Cwith direct operating pressure relief valve size 10 (Max. working pressure 5800 psi)

6

Type Approximate Weightkg (lbs.)

SAB 32 M 12.0 (26.4)

SAB 32 E 12.4 (27.2)

Dimensions in inchesNote: for “M” Type block the 2-waydirectional valve is replaced with a plug

5 3025201510

9000

8000

7000

6000

5000

4000

3000

2000

1000

600

500

400

300

200

10050

20 120100806040

630

400

315

200

10050

Size 10

Direct OperatingPressure Relief Valve

Ope

ratin

g P

ress

ure

in p

si

Ope

ratin

g P

ress

ure

in b

ar

lowest adjustablepressure

Flow in gpm

Flow in l/min

3.3 TYPE SAB 32 M/E...Cwith direct operating pressure relief valve size 10 (Max. working pressure 5800 psi)

7

Type Approximate Weightkg (lbs.)

SAB 32 M 13.6 (30.0)

SAB 32 E 14.0 (30.8)

Dimensions in inchesNote: for “M” Type block the 2-waydirectional valve is replaced with a plug

5 3025201510

9000

8000

7000

6000

5000

4000

3000

2000

1000

600

500

400

300

200

10050

20 120100806040

630

400

315

200

10050

Size 10

Direct OperatingPressure Relief Valve

Ope

ratin

g P

ress

ure

in p

si

Ope

ratin

g P

ress

ure

in b

ar

lowest adjustablepressure

Flow in gpm

Flow in l/min

3.4 TYPE SAB 32 M/E...Ewith direct operating pressure relief valve size 10 (Max. working pressure 3000 psi)

*Hexagonal socket head cap screwsM 12x35-DIN 912 (Part HYDAC No. 00602100have to be ordered separately

8

Type Approximate Weightkg (lbs.)

SAB 32 M 13.6 (30.0)

SAB 32 E 14.0 (30.8)

Dimensions in inchesNote: for “M” Type block the 2-waydirectional valve is replaced with a plug 5 3025201510

9000

8000

7000

6000

5000

4000

3000

2000

1000

600

500

400

300

200

10050

20 120100806040

630

400

315

200

10050

Size 10

Direct OperatingPressure Relief Valve

Ope

ratin

g P

ress

ure

in p

si

Ope

ratin

g P

ress

ure

in b

ar

lowest adjustablepressure

Flow in gpm

Flow in l/min

*Hexagonal socket head cap screwsM 16x55-DIN 912 (Part HYDAC No. 00601496have to be ordered separately

3.5 Type SAB 32 M/E...Fwith direct operating pressure relief valve size 10 (Max. working pressure 5800 psi)

9

30

0

10

20

50 100 150 200 250 300

Q (gpm)

∆P (

psi)

SAB10 SAB20

SAB32

Type SAB Accumulator Type Adapter Fig. Thread A B C D E FSAB 10/20 SB330-Size 1 / SBO-Size 2 to 3.5 S 60 1 1 1/16-12 UN 1.26 1.60 2.17 0.55 0.75 0.60

SB330-Size 4 to 6 / SB600-Size 1 to 4 S 62 1 1 5/8-12 UN 1.90 2.60 2.24 0.90 0.75 0.60SB330/600-Size 10 to 54 S 63 1 1 7/8-12 UN 2.13 2.60 2.24 0.90 0.75 0.60SBO-Size 0.32 to 1.4 S 64 1 3/4-16 UNF 0.90 1.60 2.00 0.40 0.60 0.45

SAB 32 SB330-Size 4 to 6 / SB600-Size 1 to 4 S 620 2 1 5/8-12 UN 1.89 3.94 1.93 0.87 0.75 0.60SB330/600-Size 10 to 54 S 630 2 1 7/8-12 UN 2.13 3.94 1.93 1.18 0.75 0.60

4. ADAPTERS

5. FLOW RATE GRAPH

Figure 2Figure 1

O-ring

O-ring

O-ring

O-ring

Thread

Thread

Pressure Drop vs. Flow Rate

10

6. SPARE PARTS

(SAB 32 only)

11

SAB Block SAB 10M SAB 20M SAB 32MSAB 10E SAB 20E SAB 32E

Description Item DimensionsRepair Kit Part No. Part No. Part No.

02104500 (NBR) 02104502 (NBR) 02104504 (NBR)02104501 (FPM) 02104503 (FPM) 02104505 (FPM)

Spindle 1Disc 2O-ring 3 10 x 2 15 x 2.5 20 x 3Ball 4Lever 5Spindle 6O-ring 7 6 x 2Set Screw 8Orifice 9Support Ring 10.1O-ring 10.2O-ring 10.3Sealing Cup 11O-ring 12 21 x 2 34 x 2.5 53 x 2.5Usit-ring 13 17.4 x 24 x 1.5 24.7 x 31.5 x 2 24.7 x 31.5 x 2O-ring 14 19 x 3 26 x 3 26 x 3Support Ring 15 20.3 x 25 x 1 27.3 x 32 x 1 27.3 x 32 x 1O-ring 16 29.7 x 2.8 29.7 x 2.8 37.2 x 3Plug 17 7/16-20UNF 3/4-16UNF 3/4-16UNF

18 N/A N/A G1/8Manual Bleed Valve Part No. Part No. Part No.Repair Kit 02115648 (NBR) 02115648 (NBR) 02115648 (NBR)

02115649 (Viton) 02115649 (Viton) 02115649 (Viton)Spindle, handle, ball 6O-ring 7 Dimensions See AboveSet Screw 82-way solenoid operated Part No. Part No. Part No.bleed valve (only for SAB...E) 00710953 00710953 00710953Bleed Valve 10Support Ring 10.1O-ring 10.2O-ring 10.3Seal Kit Part No. Part No. Part No.

02100277 (NBR) 02100279 (NBR) 02100281 (NBR)02100278 (FPM) 02100280 (FPM) 02100282 (FPM)

O-ring 3O-ring 7Set Screw 8Orifice 9Support Ring 10.1O-ring 10.2O-ring 10.3 Dimensions See AboveSealing Cup 11O-ring 12Usit-ring 13O-ring 14Support Ring 15O-ring 16Plug 17

18

O-ring dimensions are in mm

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HYDAC CORPORATION2280 City Line Road • Bethlehem, PA 18017Phone (610) 264-9503 • Fax (610) 264-7529www.hydacusa.com • powerup@hydacusa.com

Other Products from HYDAC’s Accumulator Line

Diaphragm AccumulatorsDiaphragm accumulators are frequently used where small volumes arerequired, light weight is important, a higher pressure ratio is required (up to10:1), and low cost is a prime factor. Two styles are available weld (non-repairable) and threaded (repairable). Both are suited for energy storage andshock applications.

Nominal volume: 5 in3 to 1 gal.

Max. working pressure: 3000, 4700, and up to 10,000 psi

Flow rate: up to 40 gpm

Piston AccumulatorsA wide range of piston accumulators is available. Piston position monitoring isavailable using proximity switches, extending piston rod or ultrasonictechniques. Auxiliary gas bottles are frequently used with piston accumulatorsto provide the required gas volume.

Nominal volume: 1 qt. to 100 gal.

Max. working pressure: 3000, 5000, and up to 15000 psi

Flow Rate: up to 2000 gpm

Charging & GaugingTo maintain system performance, HYDAC recommends a regular check of thegas precharge pressure. A loss in the gas precharge pressure will cause adrop in the system efficiency and could cause damage to the bladder,diaphragm or piston accumulator. By means of a charging and gauging unit,hydro-pneumatics accumulators are precharged with dry nitrogen or theirexisting gas precharge pressure is checked. For these purposes, a chargingand gauging unit is connected to a commercially available nitrogen bottle viaa flexible hose. The charging and gauging units incorporate a gauge, checkvalve in the charging connection, manual bleed valve and T-handle.

Request catalog # 02071832

Request catalog # 02071831

Request catalog # 02068597

Request catalog # 02071833

Bladder AccumulatorsThe bladder style accumulator is a great general purpose accumulator. It hasa wide range of sizes for energy storage requirements and is well suited forshock applications.

Nominal volume: 1 qt. to 15 gal.

Max. working pressure: 3000, 5000 and up to 15000 psi

Flow rate: up to 480 gpm