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Mainly by the main valve seat, the main valve plate, piston, springs and other parts.
主阀主要由阀座、主阀盘、活塞、弹簧等零件组成。
Valve plate and seat alternately touching with no grinding to maintain good sealing performance.
阀板与阀座交替开关,无滑动机构,保持高密封性;
This kind of valve is comprised of piston assembly, spring, valve plate assembly and center pipe.
这种阀主要由活塞总成、弹簧、阀板总成及中心管等组成。
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