Bosch Standard Valves Hydraulic Check / Non-Return Valves
A Range of Valves Sizes for your Hydraulics Applications
Applicable to circuits where fluid flow must move in one direction, Bosch Rexroth in-line, subplate mounted, and cavity type hydraulic check valves in either direct or pilot operated configurations provide line contact seating arrangements to prevent fluid leakage in the undesired direction.
Guided poppets in line contact with hardened seats provide a dependable, mechanical “check” function. Plus Rexroth provides a wide range of valve sizes, from a fraction of an inch to several inches in nominal diameter, to give plant operators and OEMS all the options you need to satisfy a broad spectrum of hydraulics application requirements.
Hydraulics Application: Plug-in check valve
Key features:
Sizes 6 to 30
Leak-free isolation in one direction
Plug screw with pipe thread or metric ISO thread
For block installation:
Plug-in right-angled valve (“KE”)
Plug-in straight valve (“KD”)
Various opening pressures
Special media (e.g. emulsion, water) on inquiry
RE 20 380
M-SR Check Control Valve Data Sheet
Key features:
Sizes 6 to 30
Leak-free isolation in one direction
For threaded connection
Various opening pressures
Optional surface coating
Special media (e.g. emulsion, water) on inquiry
RE 20 375
S Check valves Data Sheet
Hydraulics Application: Hydraulically pilot operated check valves
Key features:
Sizes 10 to 32
With optional leak connection (sizes 6 to 10 only)
With optional pre-decompression (sizes 10 to 32 only)
For subplate mounting (“P”):
Size 6: Porting pattern to DIN 24340 form A and ISO 4401, Subplates to RE 45052
Sizes 10 to 32: Porting pattern to DIN 24340 form D and ISO 5781, Subplates to RE 45062
For threaded connection (“G”) (sizes 10 to 32 only)
Connection flange to RE 45501
Various opening pressures
RA 21 468
SV and SL Check Control Valve Data Sheet
Hydraulics Application: Check valves of sandwich plate design
Key features:
Sizes 6 and 10
Porting pattern to DIN 24340 form A and ISO 4401
Various isolating functions
Various opening pressures
Size 6 (component series 4X):
Check valve made of carbon fiber reinforced plastic
Tightness improved as compared with previous version with metal seal
Excellent compatibility with various hydraulic fluids
Size 10 (component series 3X): optionally with
Metal seal (“–”)
Soft seal (“W4”) (please note restrictions with regard to flow volume!)
RE 21 534 (Size 6)
RE 21 537 (Size 10)
Check valve, Z1S (Size 6)
Check valve, Z1S (Size 10)
Hydraulics Application: Pilot operated check valves in sandwich plate design
Key features:
Sizes 6 to 32
Porting pattern to DIN 24340 form A and ISO 4401
For the leak-free isolation of one or two actuator ports
RE 21 548 (Size 6)
RE 21 553 (Size 10)
RE 21 558 (Size 16)
RE 21 564 (Size 22)
RE 21 566 (Size 32)
Z2S (Size 6, 16 GPM)
Z2S 10 (Size 10, 120 GPM)
Z2S 16 (Size 16, 80 GPM)
Z2S 25 (Size 25, 118 GPM)
Z2S 32 (Size 32, 238 GPM)
Hydraulics Application: Pilot operated check valves in sandwich plate design (210 bar version)
Sizes 6 and 10
Porting pattern to DIN 24340 form A and ISO 4401
For the leak-free isolation of two actuator ports
RE 21 543 (Size 6)
RE 21 549 (Size 10)
Z2SRK 6 (Size 6, 10.5 GPM)
Z2SRK 10 (Size 10, 21 GPM)
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