采用倒关双密封设计，可带压更换上密封组件，整体阀盖暗杆设计，结构紧凑。
Use back seal design, can replace top seal parts under pressure. Entirety of non-rising bonnet design, have compact structure.
本实用新型提供的双密封燃气专用阀属于一种燃气专用阀。
The utility model provides a double-sealed special valve for combustion gas, belonging to a special valve for the combustion gas.
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