Клапан отсечки давления с пилотным управлением DA 6 V

Description Size 6 Component series 5X Maximum operating pressure 350 bar Maximum flow 40 l/min Features For subplate mounting Porting pattern according to ISO 5781-03-04-0-00 (not in compliance with the standard, also without locating hole) Subplates (separate order) As cartridge valve Adjustment type: Sleeve with hexagon and protective cap 4 pressure ratings Switching pressure differential adjustable (10 % to 50 % of the nominal value) Product description The pressure valve type DA 6 V is a pilot-operated pressure cut-off valve with steplessly adjustable switching pressure differential. It basically consists of pilot control stage and main stage of the screw-in cartridge valve (1), check valve (2) and housing (3). The pump flow in P is introduced into the accumulator of the system via port B. If the pressure at the actuator in port B exceeds the set top switching pressure, the pilot control valve opens and pilot fluid discharge is enabled via port A (Y). The check valve (2) closes the connection from port B to port P and the pump flow is switched to depressurized circulation (from P to T). Type DA 6 VP Switching of the pump flow from P to B (pump → actuator) to P to T (pump → tank). The pump delivers via the check valve (2) into the hydraulic system (P to B). The pressure in channel B acts via the control line (4) and the bore (5) on the pilot control of the screw-in cartridge valve (1). Simultaneously, the pressure in channel P is applied via the bore (7) to the spring-loaded side of the main spool (8). As soon as the top cut-off pressure set via the adjustment spindle (6) in the screw-in cartridge valve (1) is reached in the hydraulic system (channel B), pilot control of the screw-in cartridge valve (1) opens the connection from the spring-loaded side of the main spool (8) to the control line (9) and the external connection via port A (Y) into the tank. Due to the bore (7), a pressure drop occurs at the main spool (8). The main spool (8) is lifted from the seat and opens connection P to T. The check valve (2) closes the connection B to P and pilot control of the screw-in cartridge valve (1) is held in open position by the actuator pressure in B. Switching of the pump flow from P to T (pump → tank) to P to B (pump → actuator). If the actuator pressure in B compared to the cut-off pressure has fallen according to the lower bottom pressure value set at the adjustment spindle (10), pilot control of the screw-in cartridge valve (1) is set back to its initial position. This way, a pressure is built up on the spring-loaded side of the main spool (8). It closes the connection from P to T by means of the spring (11) and the pump delivers via the check valve (2) into the hydraulic system from P to B. Type DA 6 VA At this valve type, the pump connection is not designed in P but in A. The valve directs the pump flow from A to P or from A to T. The drain port is located in B (Y). The switching processes correspond to version "VP" (this valve version suppo