Greenheck 460509 Pressure Switch 321042-401 a spring-return model from the

a spring-return model from the GMA or GCA series should be utilized

For optimal repeatability and accuracy

OEM Compatibility: Serves as the official replacement for part numbers 57W7901

and water pressure supplies in automatic fire control valves

Greenheck 460509 Pressure Switch 321042-401 a spring-return model from theThe Greenheck 460509 Pressure Switch is an essential safety and operational component designed for induced draft combustion systems and industrial ventilation. As an OEM Greenheck replacement part, this differential air flow switch is calibrated to a fixed set point of . 2" w. c., ensuring that your inducer motor is moving the precise volume of air required for safe operation. Built for durability in demanding mechanical rooms, the 460509 features a