仪表阀

gate valve───[机]闸门阀；闸式阀

gate valves───闸阀

globe valve───截止阀；球心阀

globe valves───截止阀，球心阀（globevalve的复数形式）

vacuum valve───真空阀

air valve───[机]空气阀；通气管之活瓣

ball valve───[机]球阀，弹子阀

Metallurgical oxygen system pipe system, should use strict degreasing treatment, needle valve flange J29 Angle Pressure Gauge valve connection.───冶金系统中的氧气管路系统中，宜选用经过严格脱脂处理，法兰连接的针型阀。

The utility model relates to a back-pressure gauge valve which is freeze proof and theft proof.───本实用新型涉及一种防冻、防盗回压表阀。

air vent valves, pressure gauge valve, water level gauge, burner supply valve and steam supply valve should be opened fully. Other valves and checking manhole close.───上水时，空气阀、压力表阀及水位计通汽通水阀开足，其他阀门和检查门无孔门应一律关闭。

Before feeding water, air vent valves, pressure gauge valve, water level gauge, burner supply valve and steam supply valve should be opened fully. Other valves and checking manhole close.