Before feeding water, airvent 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。
2
Open vent needle valve and bleed air from hose. Then close ventvalve.
开启排气针形阀，并从软管排放空气。然后关闭排气阀。
3
Vent the piping and test valve body cavity to remove air or steam.