MARS 43331 Pressure Switch R-22 Incorporating an activated alumina and

Incorporating an activated alumina and molecular sieve desiccant blend

How do I identify a failing pneumatic restrictor

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

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

for maximum performance and torque ratings

MARS 43331 Pressure Switch R-22 Incorporating an activated alumina andThe 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