gas valve valve seat  气门-门座

valve-valve base  气门-气门座

Valve-valve seat  气门-气门座

auxiliary valve relief valve setting  辅助阀安全阀调定

bell- shaped valve cup valve  钟形阀; 杯形阀

blade control valve relief valve  铲刀控制阀安全阀

brake valve relief valve  制动阀安全阀

butterfly valve + non-return intake valve  蝶阀+止回阀式进气阀

clack valve clap valve  蝶形阀

cooling valve charge relief valve pressure test  冷却阀加注安全阀压力试验

cup valve bell shaped valve  杯形阀; 钟形阀

cup valve(bell-shaped valve)  钟形阀; 杯形阀

dead-weight safety valve (weighted valve)  重码安全阀

drum selector valve protection relief valve pressure test  卷筒选择器阀防护安全阀压力试验

Energy saving on valve plate of hot blast valve  热风阀阀板的节能探讨

four valve control valve group  四阀控制阀组件

lift solenoid valve relief valve  提升器电磁阀安全阀

MSV-BV (main stop valve bypass valve)  主汽门旁通阀

offset disc burerfly valve; eccentric butterfly valve  偏心阀板蝶阀