Rexroth DB10 Pilot Operated Pressure Adjustment Relief Valve

The Rexroth DB10 pilot operated pressure adjustment relief valve is manifold mounted pressure relief valve, this valve is 3X series, which is mostly used for the system which needs sensitive adjustment with not high pressure.

Rexroth DB10 Pilot Operated Pressure Adjustment Relief Valve

There are some troubleshooting below affected the valve characteristics:

Failure of pressure adjustment and relief: the pilot valve spool spring break, the throttle hole is block; poor seal of oil port; the main spool stuck.
Trouble clearing measures: replace the broken parts for emergency use, clean, dredge, grinding or the oil circuit breaker for emergency use ; grinding , cleaning .

The pressure limiting instability: instability pilot - type relief pressure limiting performance for low or high pressure of the hydraulic system, hydraulic actuators action inability or tubing, pump, valve burst.
Pressure limiting instability failure reasons: improper pressure adjustment; pilot valve spool the spring bending or soften; oil too dirty or poor oil flow.
The corresponding trouble clearing measures: re-adjustment; correction, the padded or replace; replacement, cleaning.
Pilot type relief pressure limiting instability for the gradual onset fault, pilot -type relief valve failure for the sudden failure exclude failure after limited should the system pressure relief valve on the pilot control pressure readjustment.