Xylem-McDonnell & Miller 309000 Slide Wire Resistor Kit 7B-1R

The Xylem-McDonnell & Miller 309000 7B-1R Slide Wire Resistor Kit is used as part of boiler systems, which are aimed at enhancing the effectiveness and safety of heating and HVAC systems. This resistor kit is used together with water level controls to provide accurate and reliable water level monitoring in steam boilers. The Slide Wire Resistor Kit provides the correct resistance readings that are equivalent to the water level in the boiler since it is an essential part of the water level controller. The slide wire resistor is a variable resistor which changes its electrical resistance with changes in water level.