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HYDAC safety and shut-off blocks are designed to protect, shut-off, and discharge hydraulic accumulators or user units. The compact design simplifies the hydraulic system connection and offers the following advantages:
  • minimum space compared to individual components
  • reduced installation time
  • various system connections
  • system lockout
Accum_SafetyShutOff-SAF
Unit of Measure
Items Accum_SafetyShutOff-SAF
2122041
Type SAF Safety & Shut-off Blocks
List Price QUOTE
Accum_SafetyShutOff-SAF
2122075
Type SAF Safety & Shut-off Blocks
List Price QUOTE
Accum_SafetyShutOff-SAF
2121662
Type SAF Safety & Shut-off Blocks
List Price QUOTE
Accum_SafetyShutOff-SAF
2122214
Type SAF Safety & Shut-off Blocks
List Price QUOTE
Accum_SafetyShutOff-SAF
2122211
Type SAF Safety & Shut-off Blocks
List Price QUOTE
Description N/A HYDAC safety and shut-off blocks are designed to protect, shut-off, and discharge hydraulic accumulators or user units. The compact design simplifies the hydraulic system connection and offers the following advantages:
  • minimum space compared to individual components
  • reduced installation time
  • various system connections
  • system lockout
Type N/A Safety and Shut-Off Block
Model Code Description N/A SAF10E12Y1T100A N/A SAF10E12Y1T100A-S13 N/A SAF10E12Y1T210A N/A SAF10E12Y1T250A N/A SAF10E12Y1T330A
Model N/A Solenoid Operated and Manual Discharge
Threaded Connection Type (P,T,M1 Ports) N/A BSPP ISO 228
Seal Material N/A
Approximate Weight N/A
Size of Main Shut-Off Valve N/A DN 10
Block Material N/A Carbon Steel
Fluids N/A Mineral Oil, Hydraulic Oil, Water Glycol, Non-flammable Fluids (Other Fluids Upon Request)
Operating Temperature [Min] N/A -15 ºC5 ºF
Operating Temperature [Max] N/A 80 ºC180 ºF
Maximum Working Pressure N/A Up to 400 barUp to 5800 psi
Valve Type N/A Solenoid
Pressure Port Size N/A 3/4 in. - 16 UNF
Tank Port Size N/A 3/4 in. - 16 UNF
Accumulator Port Size N/A M33x2 ISO 6149/DIN 3852 N/A S13 Adapter to G2 in. N/A M33x2 ISO 6149/DIN 3852 N/A M33x2 ISO 6149/DIN 3852 N/A M33x2 ISO 6149/DIN 3852
Maintenance Port Size N/A 7/16 in. - 20 UNF
Accumulator Type-Size N/A Determined by Adapter N/A SB330-600 10-50L G 2A N/A Determined by Adapter N/A Determined by Adapter N/A Determined by Adapter
Flanged Connection Type (P,T,M1 Ports) N/A
2-Way Solenoid Operated Bleed Valve Operating Function N/A Normally Open (Standard) (WSM06020Y)
S Adapter Size (For S Port, Accumulator Connection) N/A N/A G2 in. N/A N/A N/A
Locking Device N/A
2-Way Solenoid Operated Bleed Valve Voltage N/A 24 V
2-Way Solenoid Operated Bleed Valve Voltage N/A
2-Way Solenoid Operated Bleed Valve Current N/A 0.8 A
2-Way Solenoid Operated Bleed Valve Frequency N/A
2-Way Solenoid Operated Bleed Valve Frequency N/A DC
Relief Valve Pressure [Max] (HYDAC DB12) N/A 100 bar N/A 100 bar N/A 210 bar N/A 250 bar N/A 330 bar
Pressure Relief Valve (HYDAC DB12) N/A Factory set and wire sealed, certified Safety Relief Valve, non-adjustable
Voltage Type N/A DC
S Adapter Dimension A N/A
S Adapter Dimension B N/A
S Adapter Dimension C N/A
S Adapter Dimension D N/A
S Adapter Dimension E N/A
S Adapter Dimension F N/A
O-Ring (1) N/A 10 x 2 mm
O-Ring (2) N/A 6 x 2 mm
O-Ring (3) N/A 21 x 2 mm
O-Ring (4) N/A 18 x 2 mm
O-Ring (5) N/A 29.7 x 2.8 mm
Usit-Ring N/A 18.3 x 21.5 x 1 mm
Backup Ring (1) N/A 23.47 x 2.62 mm
Plug (1) N/A 7/16 in.-20 UNF
Plug (2) N/A
BUn N/A EA
Safety & Shut-off Block Features N/A
  1. Pressure relief valve (DB12)
  2. Pressure gauge (optional)
  3. Main shut-off valve
  4. Manual bleed valve
  5. 2-way solenoid operated bleed valve (optional)
  6. Accumulator
Construction N/A The Safety and Shut-off Block consists of a valve block, a built-in pressure relief valve, a main shut-off valve, and a manually operated bleed valve. In addition, an optional solenoid operated bleed valve allows automatic pressure relief of the accumulator or user unit and therefore relief of the hydraulic system in an emergency or during shut-down. The necessary return line connection is provided in addition to the gauge connection.
Standard Models N/A Model with manually operated bleed valve
The basic model type "M" contains a manually operated bleed valve for manual pressure release of the accumulator.

Model with solenoid operated bleed valve
In addition to the features of the type “M” block, the type "E" model also contains a solenoid operated bleed valve for automatic pressure release of the accumulator.
Repair Kits N/A 3154715 (FPM)
2115649 (FPM) - Spindle Manual Bleed Valve, Repair Kit - Consists of Spindle, Handle, Ball, O-Ring, and Set Screw
Solenoid N/A 715003 - Old 2SV5 - Coil Kit for 2-Way Solenoid Operated Bleed Valve
2083644 - New WSM - Coil Kit for 2-Way Solenoid Operated Bleed Valve

For complete solenoid replacement, both the 2-way solenoid valve and the coil kit are required 2SV5 coils and WSM coils are not interchangeable.
When replacing a 2SV5 with a WSM you must also replace the coil with the WSM design.
Seal Kit N/A 3154712 (FPM)
Note N/A When using hydro-pneumatic accumulators for stored hazardous energy, HYDAC recommends the use of its Safety and Shut-off Block (SAF) with solenoid operated bleed valve.

These are non-standard items.
Not all combinations are available.
Core Products N/A
Division N/A N/A N/A ACCUMULATORS N/A ACCUMULATORS N/A
Product Group Family N/A N/A N/A SAFETY AND SHUT-OFF BLOCKS N/A SAFETY AND SHUT-OFF BLOCKS N/A
Product N/A N/A N/A ACCUMULATORS ACCESSORIES N/A ACCUMULATORS ACCESSORIES N/A