Water Level Indicator In Steam Boiler

Steam boiler use water level indication to detect the water level in steam drum.

Water level indicator in steam boiler. Normally two water level indicators are fitted at the front end of every boiler. Water level indicator consists of three cock as steam cock water cock drain cock and glass tube. The steam cock connect or disconnects the glass tube with steam space. Water level indication applies to steam boilers where the water level can be detected.

Steam drum usually uses gauge glass as its indicator. The water cock connect or disconnect the glass tube with water in the boiler. The drain cock is used to drain out the water in from glass tube at interval to ensure that the. A lot of rules determine to use and arrange two gauge glasses especially for steam boiler which has maximum allowable working pressure above 400 psi or above 28 bar to reduce possibility of breakage which can cause the operator in danger.

For automatically controlled steam boilers national standards usually call for two independent low level alarms to ensure safety. Where the boiler drum is situated at considerable height from the floor the water gauge is often inclined to make the water level visible from any position. It includesmost steam boilers the exception being those of the once through or coil type where there is no steam drum.