Safety & Shut-off Blocks - Airline Hydraulics

Safety & Shut-off Blocks
SAB 10/20/32

1. DESCRIPTION
1.1 GENERAL
The safety and shut-off block
is designed to protect, shutoff,
and discharge hydraulic
accumulators or user units.
The compact design simplifies
the hydrualic system
connection and offers the
following advantages.
• minimum space compared
to 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 operated
bleed valve (optional)
In accordance with OSHA
requirements for stored
hazardous energy, HYDAC
recommends the use of its
Safety and Shut-off Block
(SAB) with solenoid operated
bleed valve. Use of the
HYDAC SAB block in your
system satisfies OSHA
regulation 29 CFR part 1910
for the accumulator.
Circuit Diagram of a HYDAC SAB Block:
1.2 CONSTRUCTION
The Safety and Shut-off Block
consists of a valve block, a
built-in pressure release valve,
a main shut-off valve, and a
manually operated bleed
valve. In addition, an optional
solenoid operated bleed valve
(open when de-energized) (1
allows automatic release of
the accumulator or user unit
and therefore of the hydraulic
system in an emergency or
during shut-down. The
necessary return line
connection is provided in
addition to the gauge
connection.
1.3 CONNECTIONS
The Safety and Shut-off Block
has the following connections:
S – Accumulator Connection
P – System Connection
T – Tank Connection
M1 – Gauge Connection
1.4 TECHNICAL
SPECIFICATIONS
1.4.1 Fluids
Mineral oil, hydraulic oil, water
glycol, 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 Pressure
up to 5800 psi (400 bar)
1.5 STANDARD MODELS
1.5.1 Model with manually
operated bleed valve
The basic model code “M”
contains a manually operated
bleed valve for manual
pressure release of the
accumulator.
Sizes: SAB 10 M
SAB 20 M
SAB 32 M
1.5.2 Model with solenoid
operated bleed valve
The “E” model Safety and
Shut-off Block contains a
solenoid operated bleed valve
(open when de-energized) (1 for
automatic pressure release of
the accumulator.
Sizes: SAB 10 E
SAB 20 E
SAB 32 E
1) closed when de-energized on request
2

2. Model Code: SAB Blocks SAB 20 E 1 6 Y 1 — 200 C — S 60 L
(also order code)
Designation
Safety and Shut-off Block
Size of main shut-off valve
10 = DN 10
20 = DN 20
32 = DN 32
Model
M = Manual discharge
E = Solenoid operated and manual discharge
Block Material
1 = Carbon Steel (standard)
3 = Stainless Steel (316)
7 = Others
Seal Material
2 = NBR (BUNA N)
4 = IIR (Butyl)
6 = FPM (Viton) (standard)
7 = Others
2-Way Solenoid Operated Bleed Valve
Operating Function
Y = Normally Open (standard)
Z = Normally Closed
Solenoid
1 = 24 VDC (standard)
2 = 110 VAC – 60 Hz (standard)
3 = 220 VAC – 50 Hz
4 = 220 VAC – 60 Hz
7 = Others
Pressure Relief Valve - Pressure Range
200 = up to 2900 PSI
315 = up to 4600 PSI
400 = up to 5800 PSI
(others upon request)
Connection Type
Threaded:
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)
3

3. DIMENSIONS
3.1 TYPE SAB 10 M/E...C
with direct operating pressure relief valve size 6 (Max. working pressure 5800 psi)
Type
Approximate Weight
kg (lbs.)
SAB 10 M 3.6 (8.0)
SAB 10 E 4.0 (8.8)
Dimensions in inches
Note: for “M” Type block the 2-way
directional valve is replaced with a plug
Operating Pressure in bar
450
400
300
200
100
50
Operating Pressure in psi
Direct Operating
Pressure Relief Valve
Size 6
6500
6000
400
5000
315
4000
3000
2000
1000
500
200
100
50
25
3 6 9 12 15
Flow in gpm
lowest
adjustable
pressure
4
10 20 30 40 50 60
Flow in l/min

3.2 TYPE SAB 20 M/E...C
with direct operating pressure relief valve size 10 (Max. working pressure 5800 psi)
Type
Approximate Weight
kg (lbs.)
SAB 20 M 6.8 (15.0)
SAB 20 E 7.2 (15.8)
Dimensions in inches
Note: for “M” Type block the 2-way
directional valve is replaced with a plug
Operating Pressure in bar
600
500
400
300
200
100
50
Operating Pressure in psi
9000
8000
7000
6000
5000
4000
3000
2000
1000
Direct Operating
Pressure Relief Valve
Size 10
630
400
315
200
100
50
5 10 15 20 25 30
Flow in gpm
lowest
adjustable
pressure
20 40 60 80 100 120
Flow in l/min
5

3.3 TYPE SAB 32 M/E...C
with direct operating pressure relief valve size 10 (Max. working pressure 5800 psi)
Type
Approximate Weight
kg (lbs.)
SAB 32 M 12.0 (26.4)
SAB 32 E 12.4 (27.2)
Dimensions in inches
Note: for “M” Type block the 2-way
directional valve is replaced with a plug
Operating Pressure in bar
600
500
400
300
200
100
50
Operating Pressure in psi
9000
8000
7000
6000
5000
4000
3000
2000
1000
Direct Operating
Pressure Relief Valve
Size 10
630
400
315
200
100
50
5 10 15 20 25 30
Flow in gpm
lowest
adjustable
pressure
6
20 40 60 80 100 120
Flow in l/min

3.4 TYPE SAB 32 M/E...E
with direct operating pressure relief valve size 10 (Max. working pressure 3000 psi)
*Hexagonal socket head cap screws
M 12x35-DIN 912 (Part HYDAC No. 00602100
have to be ordered separately
Type
Approximate Weight
kg (lbs.)
SAB 32 M 13.6 (30.0)
SAB 32 E 14.0 (30.8)
Dimensions in inches
Note: for “M” Type block the 2-way
directional valve is replaced with a plug
Operating Pressure in bar
600
500
400
300
200
100
50
Operating Pressure in psi
9000
8000
7000
6000
5000
4000
3000
2000
1000
Direct Operating
Pressure Relief Valve
Size 10
630
400
315
200
100
50
5 10 15 20 25 30
Flow in gpm
lowest
adjustable
pressure
20 40 60 80 100 120
Flow in l/min
7

3.5 Type SAB 32 M/E...F
with direct operating pressure relief valve size 10 (Max. working pressure 5800 psi)
*Hexagonal socket head cap screws
M 16x55-DIN 912 (Part HYDAC No. 00601496
have to be ordered separately
Type
Approximate Weight
kg (lbs.)
SAB 32 M 13.6 (30.0)
SAB 32 E 14.0 (30.8)
500 7000
400
6000
400
5000
315
300 4000
200 3000
200
2000
100
100
Dimensions in inches
50
1000
50
Note: for “M” Type block the 2-way
directional valve is replaced with a plug 5 10 15 20 25 30
Flow in gpm
Operating Pressure in bar
600
Operating Pressure in psi
Direct Operating
Pressure Relief Valve
Size 10
9000
630
8000
lowest
adjustable
pressure
8
20 40 60 80 100 120
Flow in l/min

4. ADAPTERS
Thread
O-ring
Thread
O-ring
O-ring
O-ring
Figure 1
Figure 2
Type SAB Accumulator Type Adapter Fig. Thread A B C D E F
SAB 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 0.60
SB330/600-Size 10 to 54 S 63 1 1 7/8-12 UN 2.13 2.60 2.24 0.90 0.75 0.60
SBO-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 0.60
SB330/600-Size 10 to 54 S 630 2 1 7/8-12 UN 2.13 3.94 1.93 1.18 0.75 0.60
5. FLOW RATE GRAPH
30
Pressure Drop vs. Flow Rate
∆P (psi)
20
SAB10
SAB20
SAB32
10
0
50 100 150 200 250 300
Q (gpm)
9

6. SPARE PARTS
(SAB 32 only)
10

SAB Block SAB 10M SAB 20M SAB 32M
SAB 10E SAB 20E SAB 32E
Description Item Dimensions
Repair Kit Part No. Part No. Part No.
02104500 (NBR) 02104502 (NBR) 02104504 (NBR)
02104501 (FPM) 02104503 (FPM) 02104505 (FPM)
Spindle 1
Disc 2
O-ring 3 10 x 2 15 x 2.5 20 x 3
Ball 4
Lever 5
Spindle 6
O-ring 7 6 x 2
Set Screw 8
Orifice 9
Support Ring 10.1
O-ring 10.2
O-ring 10.3
Sealing Cup 11
O-ring 12 21 x 2 34 x 2.5 53 x 2.5
Usit-ring 13 17.4 x 24 x 1.5 24.7 x 31.5 x 2 24.7 x 31.5 x 2
O-ring 14 19 x 3 26 x 3 26 x 3
Support Ring 15 20.3 x 25 x 1 27.3 x 32 x 1 27.3 x 32 x 1
O-ring 16 29.7 x 2.8 29.7 x 2.8 37.2 x 3
Plug 17 7/16-20UNF 3/4-16UNF 3/4-16UNF
18 N/A N/A G1/8
Manual 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 6
O-ring 7 Dimensions See Above
Set Screw 8
2-way solenoid operated Part No. Part No. Part No.
bleed valve (only for SAB...E) 00710953 00710953 00710953
Bleed Valve 10
Support Ring 10.1
O-ring 10.2
O-ring 10.3
Seal Kit Part No. Part No. Part No.
02100277 (NBR) 02100279 (NBR) 02100281 (NBR)
02100278 (FPM) 02100280 (FPM) 02100282 (FPM)
O-ring 3
O-ring 7
Set Screw 8
Orifice 9
Support Ring 10.1
O-ring 10.2
O-ring 10.3 Dimensions See Above
Sealing Cup 11
O-ring 12
Usit-ring 13
O-ring 14
Support Ring 15
O-ring 16
Plug 17
18
O-ring dimensions are in mm
11

Other Products from HYDAC’s Accumulator Line
Bladder Accumulators
The bladder style accumulator is a great general purpose accumulator. It has
a wide range of sizes for energy storage requirements and is well suited for
shock applications.
Nominal volume: 1 qt. to 15 gal.
Max. working pressure: 3000, 5000 and up to 15000 psi
Flow rate: up to 480 gpm
Diaphragm Accumulators
Diaphragm accumulators are frequently used where small volumes are
required, light weight is important, a higher pressure ratio is required (up to
10:1), and low cost is a prime factor. Two styles are available weld (nonrepairable)
and threaded (repairable). Both are suited for energy storage and
shock applications.
Nominal volume: 5 in 3 to 1 gal.
Max. working pressure: 3000, 4700, and up to 10,000 psi
Flow rate: up to 40 gpm
Piston Accumulators
A wide range of piston accumulators is available. Piston position monitoring is
available using proximity switches, extending piston rod or ultrasonic
techniques. Auxiliary gas bottles are frequently used with piston accumulators
to 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
Request catalog # 02071832
Request catalog # 02071831
Request catalog # 02068597
Charging & Gauging
To maintain system performance, HYDAC recommends a regular check of the
gas precharge pressure. A loss in the gas precharge pressure will cause a
drop 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 their
existing gas precharge pressure is checked. For these purposes, a charging
and gauging unit is connected to a commercially available nitrogen bottle via
a flexible hose. The charging and gauging units incorporate a gauge, check
valve in the charging connection, manual bleed valve and T-handle.
Request catalog # 02071833
© Copyright 1999 HYDAC TECHNOLOGY CORPORATION - Brochure - SAB Safety & Shut-off Blocks - #02071830 / 08.00
HYDAC CORPORATION
2280 City Line Road • Bethlehem, PA 18017
Phone (610) 264-9503 • Fax (610) 264-7529
www.hydacusa.com • powerup@hydacusa.com