Coil spring lift formula sudden check valve

摘要

(57) Abstract Objective Operations current from joint part of seat and casingCoil spring lift type close quickly converse break-through of the body can be preventedOffer of stop valve. Constitution Through the spring holding down, installation to the needleThe needle pushing pressure energization is done in the seat, by the ru coil springIn the ru coil spring lift type close quickly check valve, the seatWith the feature which prevents the fluid neutron leakage from with the casing structureForming in order to do, place of the seat which this touches to the shoulder of the casingThe spine was formed.