Scavenging and Pressure Relief Valve Block SDVB

The scavenging and pressure relief valve block serves to maintain the feed pressure, to exhaust excess oil and to limit the operating pressure in a closed hydraulic circuit. Both service ports A and B can be pressurised with high or low pressure as required. The high pressure controlled scavenging spools ensure that upon changeover of the gigh and low pressure sides the scavenging valve is connected to the low pressure side.

Pilot operation of the double acting pressure relief valves allows simple setting, with minimum force, of the required pressure value for both pressure sides of the circuit. These settings may be carried out independent of one another. On sizes 30 and 50, remote control is also possible via external pilot oil connections (X and Y). When the relief valves are actuated, oil flows from the high pressure to the low pressure side.