This direct mount pressure switch features an SPST contact configuration designed to open on pressure rise at 350 PSIG

Auxiliary Flexibility: Any contacts except F1 and F2 can be utilized as auxiliary contacts for tailored system logic

screeching bearings

this specific orifice is sized (#33) exclusively for natural gas

Cross-Compatibility: Fully interchangeable with the P70MA-11C

Lochinvar & A.O. Smith 100110729 Prover Switch L99H008 This direct mount pressure switchThe Lochinvar & A. O. Smith 100110729 Prover Switch is a critical safety component designed for high efficiency condensing boilers and commercial water heaters. This OEM pressure switch serves as a blower prover, ensuring the combustion air blower is generating sufficient static pressure to safely vent flue gases before the ignition sequence begins. As the direct updated version for FS6679 1338, this part features a normally open contact configuration