Brass knurled thread insert Made of brass material, good thermal conductivity and heat resistance.
Widely Used On the Injection molding for Tightly Fixing.
Brass knurled Can be installed by ultrasonic or heat into thread tapered hole, or molded in during injection.
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The leakage of the knife-type gate valve closing part usually refers to the leakage of the stuffing box, and the leakage of the closing part is called the internal leakage. The closing part leaks and is not found in the valve. Closed parts leaks can be divided into two categories; one is the sealing surface leakage; the other is the seal root leakage. The causes of the knife gate valve leakage are:
1. The sealing surface of the knife gate valve is not well grounded;
2. The sealing ring is not tightly matched with the valve seat and valve;
3, the valve is not securely connected to the valve stem;
4, the valve stem is twisted and twisted, so that the upper and lower closing parts are not centered;
5, close too fast, sealing surface contact is not good or has been damaged
6, the material is not properly selected, can not withstand the corrosion of the medium;
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