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The DGMX25PBBWS30 valve belongs to the SystemStak Modular Valves series and is produced by Vickers. It functions as a pressure reducing and relieving element in hydraulic automation, regulating supply pressure to downstream circuits. The unit is pressure operated, so inlet pressure shifts the internal spool without separate pilot lines. It tolerates a maximum operating pressure of 315 bar and passes up to 120 l/min to serve medium-flow machines. Installation uses the ISO 4401-05 mounting interface, allowing it to stack with CETOP 5 and NFPA D05 components. The pressure port P is the surface acted upon, while pilot control is taken from port B to sense downstream conditions and adjust the spool position accordingly.
For circuit tuning, a screw and locknut assembly sets the desired pressure and secures the adjustment against vibration. The design has no external drain, so return oil leaves through internal passages and simplifies plumbing. Acceptable oil cleanliness is 19/17/14, and compatible fluids are petroleum oils. A gauge port threaded to SAE-4 (7/16-20 UNF-2B) lets technicians verify outlet pressure during commissioning. The body height measures 59.944 mm, and overall length is 208.026 mm (8.190 in), data useful when allocating manifold space. The valve weighs 3.5 kg, which permits manual handling during assembly and maintenance.
Actuation Type
Pressure Operated
Adjustment Device
Screw And Locknut
External Drain
No
Fluid Cleanliness
19/17/14
Fluid Compatibility
Petroleum Oils
Gauge Port Thread
SAE-4 (7/16-20 UNF-2B)
Height
59.944 mm
Length
208.026 mm
Length (inch)
8.190 in
Maximum Flow
120 l/min
Maximum Operating Pressure
315 bar
Mounting Interface
ISO 4401-05 (CETOP 5, NFPA D05)
Pilot Control
Port B
Port Operated Upon
P (Pressure Port)
Valve Function
Pressure Reducing/Relieving
Weight
3.5 kg
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