Bosch Standard Valves Hydraulics Pressure Control/Relief Valves
Pressure Ranges from Minimum to Maximum
Pressure control valves limit the maximum amount of pressure in a complete or branch hydraulic circuit and provide pressure ranges from minimum to 365 psi (full range), and from minimum to 9,000 + psi.
Defining the maximum system pressure achievable is the role of a relief valve. Even for circuits in which the pump may have an integral maximum pressure control, an independent relief valve provides additional redundancy. Rexroth relief valves define pressure ranges from "minimum" to "maximum;" we do not stack ranges as do competitors
Hydraulic Application: Pressure reducing valves, pilot operated
Key features:
Sizes 10 to 30
For subplate mounting (“P”): Porting pattern to DIN 24340 form D and ISO 5781
For block installation (“C”)
For threaded connection (“G”)
As cartridge valve (“K”)
4 pressure stages
4 optional adjustment types:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
Check valve, optional (with version “P” only)
RA 26 850 (Size 10, 3X)
RA 26 892 (Size 10-30, 5X)
Model DRK.V Pressure Relief Valve
Hydraulic Application: Pressure reducing valves in sandwich plate design, pilot operated (210 bar frame size)
Key features:
Sizes 6 and 10
Porting pattern to DIN 24340 form A and ISO 4401
Pressure reduction in channel A, B or P (with size 6, P channel only)
3 pressure stages: 50, 100, 210 bar
Press
Hydraulic Application: Pressure reducing valves in sandwich plate design, direct operated
Key features:
Sizes 6 and 10
Porting pattern to DIN 24340 form A and ISO 4401
Pressure reduction in channel A, B or P
4 pressure stages: 25, 75, 150, 210 bar
4 optional adjustment types:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
Check valve, optional
RA 26 570 (Size 6)
RA 26 585 (Size 10)
Pressure reducing valve, direct operated, Type ZDR 6 D (Size 6)
Pressure reducing valve, direct operated, Type ZDR 10 D (Size 10)
Key features:
Sizes 10 & 16
Valve for reducing (P to A) and limiting (A to T) a system pressure
For subplate mounting
Porting pattern to ISO 4401-07-07-0-05
Subplates to data sheet RE 45056 (separate order)
4 pressure ratings
4 adjustment elements, optional:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
RE 26 915 (Size 10)
RE 26 928 (Size 16)
Pressure reducing valve, pilot operated, Size 10, 6X
Pressure reducing valve, pilot operated, Size 16, 5X
Hydraulic Application: Pressure relief valves, pilot operated
Key features:
Sizes 6 to 30
For subplate mounting (“P”): Porting pattern to DIN 24340 form E and ISO 6264
For block installation (“C”)
For threaded connection (“G”)
For flanged connection (“F”)
As cartridge valve (“K”)
Solenoid operated unloading via built-on directional spool valve or directional poppet valve
Switching shock damping, optional (type DBW. only)
Type-tested safety valves in accordance with Pressure Equipment Directive 97/23/EC
4 optional adjustment types:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
RE 25 731 (Sizes 6 & 10)
RE 25 802 (Sizes 10 - 32)
RA 25 818 (Sizes 10 to 25)
DB.K Series 4X (Sizes 6 and 10)
DB.K Series 4X (Sizes 10 - 32)
DB(W)...W65 Series 1X; 4XRA 25 818 (Sizes 10 to 25)
Hydraulic Application: Pressure relief valves, direct operated
Key features:
Sizes 6 to 30
For subplate mounting (“P”)
For threaded connection (“G”)
As cartridge valve (“K”)
Type-tested safety valves in accordance with Pressure Equipment Directive 97/23/EC
3 optional adjustment types:
Threaded pin with hexagon socket and protective cap
Rotary knob / hand wheel
Lockable rotary knob
RE 25 402
RE 25 402-EVT
DBDS, DBDH, DBDA Pressure Relief Valve Data Sheet
Detailed Pressure Relief Setting Instructions
Hydraulic Application: Pressure reducing valves, direct operated
Key features:
Sizes 6 and 10
Porting pattern
Size 6 to DIN 24340 form A and ISO 4401
Size 10 to DIN 24340 form D and ISO 5781
5 pressure stages
4 optional adjustment types:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
Check valve, optional
RE 26 564 (Size 6)
RA 26 580 (Size 10)
Pressure reducing valve, direct operated, Model DR 6 DP (Size 6)
Pressure reducing valve, direct operated, DR 10 DP (Size 10)
Hydraulic Application: Pressure reducing valves in sandwich plate design, pilot operated (210 bar frame size)
Key features:
Sizes 6 and 10
Porting pattern to DIN 24340 form A and ISO 4401
Pressure reduction in channel A, B or P (with size 6, P channel only)
3 pressure stages: 50, 100, 210 bar
Pressure gauge connection
RA 26 861
ZDR10V Pressure Relief Valve Data Sheet
Pressure reducing valve, pilot operated, Type ZDRK 6 VP (Size 6)
Pressure reducing valve, pilot operated, ZDRK 10 V (Size 10)
Hydraulic Application: Pressure sequencing valves, pilot operated
Key features:
Sizes 10, 25, 32
For subplate mounting (“P”): Porting pattern to DIN 24340 form D and ISO 5781
For block installation (“C”)
Suitable for use as preload, sequencing and switchover valve
4 optional adjustment types:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
Check valve, optional
RA 26 391
DZ Pressure Sequence Valve Data Sheet
Hydraulic Application: Pressure sequencing valves, direct operated
Key features:
Sizes 6 and 10
Porting pattern
Size 6 to DIN 24340 form A and ISO 4401
Size 10 to DIN 24340 form D and ISO 5781
4 optional adjustment types:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
Check valve, optional
RA 26 076 (Size 6)
RA 26 099 (Size 10)
Pressure sequence valve, direct operated (Size 6)
Pressure sequence valve, direct operated (Size 10)
Hydraulic Application: Pressure relief valves in sandwich plate design, pilot operated
Key features:
Sizes 6 and 10
Porting pattern to DIN 24340 form A and ISO 4401
4 pressure stages: 50, 100, 200, 315 bar
5 pressure relief functions:
A – T, P – T, B – T, A – T and B – T, A – B and B – A
4 optional adjustment types:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
RE 25 751 (Size 6)
RA 25 761 (Size 10)
Pilot operated (Size 6)
Pilot operated (Size 10)
Hydraulic Application: Pressure relief valves in sandwich plate design, pilot operated
(210 bar frame size)
Key features:
Sizes 6 and 10
Porting pattern to DIN 24340 form A and ISO 4401
5 pressure relief functions:
A – T, P – T, B – T, A – T and B – T, A – B and B – A
3 pressure stages: 50, 100, 210 bar
RE 25 754 (Size 6)
RA 25 764 (Size 10)
Pilot operated (Size 6)
Pilot operated (Size 10)
Hydraulic Application: Pressure reducing valves in sandwich plate design, pilot operated
Key features:
Size 10
Porting pattern to DIN 24340 form A and ISO 4401
Pressure reduction in channel A, B or P
4 pressure stages: 50, 100, 200, 315 bar
4 optional adjustment types:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
Check valve, optional
Hydraulic Application: Pressure reducing valves in sandwich plate design, pilot operated
Key features:
Size 10
Porting pattern to DIN 24340 form A and ISO 4401
Pressure reduction in channel A, B or P
4 pressure stages: 50, 100, 200, 315 bar
4 optional adjustment types:
Rotary knob
Sleeve with hexagon and protective cap
Lockable rotary knob with scale
Rotary knob with scale
Check valve, optional
RA 26 861
ZDR10V Pressure Relief Valve Data Sheet
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