Hawe ADM, VDM

The task of pressure reducing valves in a hydraulic circuit is to maintain a rather constant outlet pressure despite a higher and changing inlet pressure.

Prezentare Generala Descarca Vizualizeaza Hawe ADM Descarca Vizualizeaza Hawe VDM Descarca Vizualizeaza

These valves are usually used when a secondary circuit has to be fed with a lower but constant pressure level by a main (primary) circuit with a higher and varying pressure level. These valves are either directly controlled (type ADM) or hydraulically piloted (type VDM). There is a design related permanent leakage flow apparent at L, which has to be led back to the tank via a de-pressurized line. A reversal of the direction of flow is possible up to approx. 50% of Qmax. A by-pass check valve has to be provided for higher reversed flow.
The pressure reducing valves type ADM feature a override compensation i.e. acting like a pressure limiting valve, if the pressure on the secondary side exceeds the set pressure e.g. due to external forces.

Features and benefits:
■ With safety valve function
■ Various adjustment options
■ Various additional functions

 

Intended applications:
■ General hydraulics
■ Jigs
■ Test benches