1.6.4 未指明结构（或阀型）的阀
切断阀 block valve; shut-off valve; stop valve 调节阀 regulating valve 快开阀 quick opening valve 快闭阀 quick closing valve 隔断阀 isolating valve 三通阀 three way valve 夹套阔 jacketed valve
非旋转式阀 non-rotary valve 排污阀 blowdown valve 集液排放阀 drip valve 排液阀 drain valve 放空阀 vent valve
卸载阀 unloading valve 排出阀 discharge valve 吸入阀 suction valve 多通路阀 multiport valve 取样阀 sampling valve
手动阀 hand-operated valve; manually operated valve 锻造阀 forged valve 铸造阀 cast valve
（水）龙头 bibb; bib; faucet 抽出液阀（小阀） bleed valve 旁路阀 by-pass valve 软管阀 hose valve 混合阀 mixing valve
破真空阀 vacuum breaker 冲洗阀 flush valve
第一道阀；根部阀 primary valve 根部阀 root valve 总管阀 header valve
事故切断阀 emergency valve
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