The kit contains a Robertshaw #A54300 and a Honeywell #393691 regulator spring

Schneider Electric (Erie) 100-082 Valve Repair Kit for 1" NPT and 1 1/4" Sweat Two Way General and Steam Service PopTop Series Valves with 8

The Johnson Controls AFS-405 is a professional-grade adjustable differential air pressure switch designed for precision monitoring in HVAC

Common symptoms include ignition failure due to improper oil heating or frequent system trips

Lochinvar & A.O. Smith 100208662 Cutoff Els PW 17895 The kit contains a RobertshawThe Lochinvar & A. O. Smith 100208662 Probe is a critical safety component designed for low water cutoff (LWCO) systems in high efficiency boilers and water heaters. As a direct OEM replacement part, it ensures the control board receives accurate conductivity signals to prevent dry firing conditions that can lead to catastrophic heat exchanger failure. This probe is technically identical to and replaces WTR2222 and WTR2222K, providing a seamless fit