HC Type Pressure Control Valves

　　They are available with integral check valves for use when free reverse flow from secondary port to the primary port is desired. There are various types of valve including sequence and counterbalance valves, allof which are operated by a pressure rise in the circuit,sensed either internally or remotely.

　　一、flanged connection valves

HC Type Pressure Control Valve flanged connection valves

　　二、Model Number Designation

　　Models with auxiliary pilots are used where valves must be operated under a lower external pilot pressure than the adjusted pressure (types N, A,and B: about 1/8 of adjusted pressure; type C: about 1/16).

　　Instructions：

　　To adjust the pressure, loosen the lock nut and turn the pressure adjustment screw slowly clockwise to increase pressures or anti-clockwise to decrease pressures. After adjustments, do not forget to tighten the lock nut.

　　Connect the secondary side pressure ports of types 1 and 4 (internal drain) and the drain ports of types 2 and 3 (external drain) directly to the reservoir with a back pressure close to the atmospheric pressure.

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