Features：
1. Compact structure, reasonable design, good valve rigidity, smooth channel, small flow resistance coefficient.
2. The sealing surface is made of stainless steel and hard alloy, which has a long service life.
3. Using flexible graphite packing, reliable sealing, easy and flexible operation.
4. The driving methods are divided into manual, electric, pneumatic and gear transmission; structure type: elastic wedge single valve, rigid wedge single gate and double gate.
5. It is widely used as an opening and closing device for connecting or cutting off the medium in the oil, water, and steam pipelines of petroleum, chemical, and thermal power plants.
Executive standard：
The main technical parameters：
Test pressure:
Valve body material and scope of application:
Material of main parts：
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