If manual control of the water level in a steaming boiler is required, the proper method of control is with the auxiliary feed __________.

Correct Answer: Option B — stop-check valve

In USCG Steam Plants (Boilers & Turbines), regarding 'If manual control of the water level in a steaming boiler is required, the proper method of control is with the auxiliary feed', the verified engineering fact is: 'stop-check valve'.