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The American standard gate valve is sealed
The release date：2017-08-04 hits:
Pour sealing, the valve manufacturer known as fall off, in simple terms is stem cutter parts and body stents packing in the lower part of the contact between the seal, seal shall be zero leakage, the American standard valve professional manufacturers - rui valves are of the utmost importance to this, the main reason has the following several aspects:
1. After the pipe installation, metaphor gate valve, globe valve, some are for normally open state, once the seal is not zero leakage will cause very serious consequences, for safety production is very serious damage;
2. Even if the valve is not a normally open state, if the other parts of the pipeline has a problem, or the new parts, add pipeline, add branch pipe, and the maintenance of valve pipe, also have very good help
3. Valve replacement filler is very important to safety, and it will not affect other production without shutting down the pipe. Just open the valve fully, and the upper seal can be closed completely, and the dressing can be changed safely
Seal gate valves is refers to the valve stem middle part has a sealing surface, a seal seat cover inside, which is the joint of the disc and stem and valve stem and valve cover internal (i.e., the bottom of the stuffing box) has a sealing structure.
When the sealing gate valve is fully open, the sealing contact is in place, which can seal the valve, reduce the erosion of the fluid to the packing, prolong the service life of the filler, and reduce the possibility of leakage.
Normally for gate valves, globe valves have an inverted seal.
Reverse sealing gate valve is equipped with reverse sealing device. The valve is sealed after being fully opened, and the packing can be changed in the normal operation of the system
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