OEM Compatibility: Fits a wide range of Raypak and Rheem models

ensuring the electromagnetic coil in the safety shut-off valve remains energized during normal operation

allowing for a direct-fit installation that minimizes downtime on the job site

When performing an HVAC heating coil repair

Its sturdy metal construction allows for proper maintenance and repeated use

Williams P321017 Switch L99H008 OEM Compatibility: Fits a wideAs a field tested HVAC professional, you know that a forced air system is only as reliable as its manual controls. The Williams P321017 Switch is the precise OEM replacement pull chain switch designed for Williams Blower Accessory 2302, commonly found on Direct Vent Furnaces. This high duty furnace fan switch provides the tactile reliability required for consistent blower activation in residential and light commercial wall heaters. When dealing with