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。
The two primary types of pressure plate assemblies are coil spring assembly and diaphragm spring .
有两个基本类型的压盘是螺旋弹簧组压盘和膜片弹簧压盘。
The two primary types of pressure plate assemblies are coil spring assembly and diaphragm spring .
有两个基本类型的压盘是螺旋弹簧组压盘和膜片弹簧压盘。
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