45" Water Column setting provides accurate safety interlocking for high-efficiency gas furnaces

the SPRD series is engineered specifically to replace the legacy PRD models with improved blade seals and more durable hardware while maintaining the original 12x8 dimensions

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

The Williams P179900 Pilot Assembly is a high-tolerance natural gas pilot replacement engineered for precision ignition in Williams wall furnaces and residential heating systems

it serves as the primary defense in compressed air systems where high-purity air is non-negotiable

Lochinvar & A.O. Smith 100208662 Cutoff Els PW 17895 45" Water Column setting providesThe 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