Pressure Reducing and Check Valves

　　Pressure reducing valves are used to set the pressure of a hydraulic circuit below that of the main circuit. In addition, operation under remote control is possible by using the remote control port. Pressure reducing and check valves have check valves, which allow a free flow from the secondary side to the primary.

Graphic Symbols

　　一、Specifications

　　1.The max. flow rates are those shown at the primary pressure at 21 MPa (3050 PSI).

　　2.The drain flow rates are equal to pilot flow rates when differential pressure between primary and secondary pressure is at 20.5 MPa (2970 PSI).

　　二、Model Number Designation

　　三、Sub-plate

　　1,Sub-plates are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface should have a good machined finish.

　　2,The sub-plates are the same as those for H type pressure control valves. With the reducing and check valve, the sub-plate is used in a position 180° turned (upside down) from the normal position. When mounting the sub-plate, be sure to bring the valve locating pin to the sub-plate pin hole.

　　四、Instructions

　　▲ To adjust the pressure, loosen the lock nut and turn the pressure adjustment handle slowly clockwise for higher pressures and anti-clockwise for lower pressures. After adjustments, do not forget to tighten the lock nut.

　　▲ Connect the drain port directly to the reservoir in which case the pressure at the drain port should be kept at a low back pressure close to the atmospheric pressure.

　　Note: Buy the "Pressure Reducing and Check Valves"products, please call our company telephone 021-67687301, 67687302. For details, browse this webpage carefully to know more about the Pressure Reducing and Check Valves" products.