Williams P500472 Limit Switch this idler sheave ensures proper

this idler sheave ensures proper alignment and reduces lateral vibration that kills motor bearings

including the FC9V100C20UP12B model

Always verify your specific valve model against the 054356 cross-reference guide to ensure exact fitment

HVAC professionals recommend inspecting the test lever annually and replacing the valve if any signs of leakage

Stable 120V Output: Provides consistent secondary voltage for sensitive HVACR logic boards and solenoid coils

Williams P500472 Limit Switch this idler sheave ensures properMaintain the operational integrity of your heating equipment with the Williams P500472 Limit Switch, a critical OEM replacement part engineered for selective gas fired heating systems. This vent safety switch features a fixed temperature setting of 280F (L280), functioning as a primary safeguard against flue gas spillage and overheating conditions within the venting assembly. Specifically designed for manual reset (M R) operation, this switch requires