自慰免费观看A久久蜜桃_5060午夜一级毛片免费_国产精品欧美日韩综合_国产福利网站在线观看_97干美午夜精品乱人伦小说区_成人毛片网站乐播av_最新日韩午夜一区二区_少妇人妻被粗大爽9797_三更2饺子在地上做_免费黄色亚洲日本网

First, the main features of plunger valve

Piston gate valve is composed of valve body, valve cover, valve stem, plunger, guide sleeve, seal ring, hand wheel and other components (pictured). When the hand wheel rotates, the plunger drives the plunger in the guide sleeve Up and down reciprocating motion, so that the end of the plunger cone and valve seat surface to complete the valve opening and closing function. Piston gate valve plunger and the seal ring with interference fit by adjusting the flange bolt preload, the seal ring compression force generated by the valve body and the hole in the outer surface of the piston seal so as to wear and tear Non-toxic new sealing material, so the seal is reliable, durable, thereby enhancing the service life of the valve. Piston gate valve is based on the original size of the valve gate connection design and manufacture, due to leakage occurred in the process of gate valve, sealing ring with poor flexibility, short life and other characteristics of the valve produced by the NieWei plunger gate valve Leak-free valve plunger valve gate valve opening and closing fast and high temperature and pressure characteristics, to become a novel structure of the leak-free plunger gate valve.

Second, the performance of plunger valve specifications

Third, the experimental plunger pressure valve

Fourth, the main plunger valve connection size