If the vacuum is present but the SPST contacts do not close

Can I use this for liquid immersion

always mount the diaphragm in a vertical plane to prevent setpoint drift caused by gravitational influence

preventing kinks and allowing for a more compact surface-mount assembly

allows for straightforward installation in tight control boxes

Lochinvar & A.O. Smith 100277936 Pressure Switch Els PW 17895 If the vacuum is presentThe Lochinvar & A. O. Smith 100277936 Pressure Switch is a critical safety component designed for precise differential pressure sensing in high efficiency condensing boilers and water heaters. Engineered with a specific set point of 0. 75" W. C. (PF), this 0. 75 pressure switch ensures the combustion air blower is generating sufficient draft before allowing the ignition sequence to proceed. As a direct Lochinvar PRS1011 replacement, it maintains the