Eternal Hydraulic Overcenter Valve
Overcenter valve is a kind of adjustable valveit arrow free flow inone direction (from V to C),reverse opening is achieved through a pilotpressure control,valve opening size is proportional to the pilotpressure valve,valve include a single valve that arrows the flow ofiquid flow,relief pilot piston is controlled by the pilot pressure,lowerpressure setting to control the reverse flow.
The overcenter valves are employed to control the block and themotion of an actuators in one direction(single overcenter valves)or inboth the directions(double overcenter valve).
Functions:load lowering control control:the lowering of the load is possibleonly if there is a pilot pressure from the other line:this operation isindependent by the cavitation
pressure relief for any pressure peaks caused by shocks oroverloads
locking of the flow (and of the load)when the directional valve isn’tworking or the pump is stoppedfree flow for load lofting(the pressure drops fpr this operation areverylow)
Technical Data
VBCD- SEA VBCD-SE VBCD- SE-FL VBCD- SE- FL SINGLE VBCD- SE-FL3 VBCD-SE-FLV VBCD-SE- 3VIE VBCD-DEA VBCD-DE VBCD-DE-FL VBCD-DE- FLV Single/Double overcenter valve.
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