SV and SL hydraulically operated check valves allow hydraulic opening to allow reverse flow. This type of valve is used to isolate the part of the pressurized hydraulic circuit, that is, to prevent the load from falling when the pipeline fails and the load slowly drops due to the leakage of the spool. For base plate mounting, mounting surface according to DIN 24340 type ISO 5781 and CETOP-RP121H base plate For threaded connections With or without drain port With or without uninstall function Models with unloading function for smooth operation (reduce possible opening shock) Four cracking pressures. Jinhai is professional manufacturer of Various types of Directional Valves, Flow Valves, Pressure Valves and Accessories, Should you have any questions please feel free to come back to us. &n…