Check valves

Check valves

 

VR*-I - Check valves, cartridge type

VR*-I valves are one-way check valves cartridge type construction and can be used in blocks or panels.

In rest conditions, the valve poppet, which is a cone on edge seal type, is kept closed by a spring with fixed setting.

The poppet opens when the pressure in the intake line “A” exceeds the set value of the spring, added to any pressure in the outlet line “B”.

Available in three sizes for flow rates of up to 300 l/min and with three different cracking pressures.

 
45100 | | | 3D
 

VD*-W* - Check valves, in-line

VD*-W* valves are check valves with threaded “BSP” ports for mounting in-line on hydraulic lines.

They allow the flow to pass freely in one direction, blocking it in the opposite direction.

In rest conditions, the valve poppet is kept closed by a spring. The poppet opens when the pressure in the intake line “A” exceeds the set value of the spring, added to any pressure in the outlet line “B”.

Available in eight sizes for flow rates of up to 850 l/min and with five different cracking pressures.

 
45200 | | | 3D
 

VR*-P - Check valves, subplate mounting

VR*-P valves are one-way check valves constructed in the subplate mounting version.

In rest conditions, the valve poppet, which is a cone on edge seal type, is kept closed by a spring with fixed setting.

The shutter opens when the pressure in the intake line “A” exceeds the set value of the spring, added to any pressure in the outlet line “B”.

Available in three sizes for flow rates up to 400 l/min and with three different cracking pressures.

 
45300 | | | 3D
 

VP*-P*-MU - Hydro-pilot operated check valves

VP*-P*-MU valves are check valves with hydraulic release, constructed in a version with subplate mounting in accordance with ISO 5781 (CETOP RP 121H) standards.

They incorporate the functions of a normal one-way check valve with the facility, by means of external piloting, to release the poppet and allow the oil to pass also in the direction opposite to the free flow, from B to A.

In rest conditions, the valve poppet, which is a cone on edge seal type, is kept closed by a spring with fixed setting. When piloting pressure is sent to port X, the release piston is operated, thus opening the main poppet and allowing the free flow from B to A.

The drainage port Y isolates the front face of the control piston from chamber A.

They are available in two sizes for flow rates up to 100 l/min and with different cracking pressures in the free flow direction.

 
46300 | | | 3D