Dwyer SPDT Boiler Water Level Control, Mercury Switch

Water level control, cast iron chamber, SPDT mercury switch. The Series 123 & 125 Boiler Water Level Controls are designed for boiler applications, the 123 is primarily used for low water cut-off or feed-water control. Other applications include condensate tanks and deaerators. A special snap action switch mechanism eliminates frequent operation due to surging water level. A transparent cover provides convenient visible operation of the switch. Features a flanged chamber for easy clean out and replacement of float or switch mechanism without removing the unit from piping. Applications: Boiler Low Water Cut-Off Boiler Feed-Water Control Condensate Tanks Deaerators Features: Special snap action switch mechanism options eliminates frequent operation due to surging water level Transparent cover provides convenient visible operation of the switch Flanged chamber for easy clean out and replacement of float or switch mechanism without removing the unit from piping