MARS 43331 Pressure Switch R-22 High Close-Off: Rated for a

High Close-Off: Rated for a 200 psi close-off pressure

it is recommended to install the unit in a horizontal pipe run

for maximum performance and torque ratings

You must confirm that the spring manufacturer matches your heater's existing gas valve brand before installation

The rugged explosion-proof housing is rated for volatile environments where natural gas boilers

MARS 43331 Pressure Switch R-22 High Close-Off: Rated for aThe MARS 43331 Pressure Switch is a professional grade high pressure cutout designed for heavy duty HVACR applications. Engineered for precision, this SPST normally closed control features a fixed setpoint that triggers an open on pressure rise at 400 PSI and provides an automatic reset when system pressure drops to 300 PSI. This encapsulated pressure control is built to withstand harsh environments, utilizing a hermetically sealed sensor to ensure