When blowing down the water column of a boiler, the water column blowdown valve is opened for 5 sec to 10 sec, allowing water and any sludge and/or sediment to be discharged.

When blowing down the water column of a boiler, the water column blowdown valve is opened for 5 sec to 10 sec, allowing water and any sludge and/or sediment to be discharged.

Small particles of water carried into steam lines are called ___.

A(n) ___ is a metering device that senses the temperature of the refrigerant discharged from an evaporator and controls the amount of liquid refrigerant flowing into the evaporator.

The relief valve should be located on the highest part of the boiler.

A(n) ___ is a metering device that senses the temperature of the refrigerant discharged from an evaporator and controls the amount of liquid refrigerant flowing into the evaporator.

A boiler vent must be closed during warm-up to prevent pressure from escaping.

The function of an automatic makeup water feeder is to replace water that has been lost.

The function of an automatic makeup water feeder is to replace water that has been lost.

An advantage of using a gate valve for isolation is that it offers little resistance to the flow of fluid through it when it is fully open.