... Safety protective valve 安全保护阀 safety check valve 安全止回阀 Safety Release Valve 安全排泄阀 ...
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Check them Safety Valves belonging to this type of valve, which includes Swing check valve and lift check valve.
其中止回阀就属于这种类型的阀门，它包括旋启式止回阀和升降式止回阀。
1 before the fire, steam boiler, should check the valve pipe, steam pipe, pressure gauge, safety valve, water level gauge, drain valve is in good condition.
蒸汽锅炉生火之前，应检查各阀门水管、汽管、压力表、安全阀、水位表、排污阀等是否处在完好状态。
Workers shall operate normally and check pressure gauges, alarm and safety valve pipe flow regular.
切记工人须按正规操作，经常检查压力表、报警器、安全阀管道畅通。
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