Lennox 87116 Sheave Els PW 17895 this disc is the primary

this disc is the primary sealing element required to maintain tight shut-off and precise throttling

This is often a sign that the Reznor 50418 Limit Switch is stuck in the "open" position

Designed specifically for integration with Robertshaw 700 series gas valves and compatible Energy Cut-Off (ECO) sensors

installing a fresh Lochinvar 100208085 gasket is a standard protocol to avoid ignition failure or CO risks associated with worn seals

Lennox 87116 Sheave Els PW 17895 this disc is the primaryThe Lennox 87116 Sheave is a precision engineered single groove cast iron pulley designed for heavy duty HVAC blower and motor assemblies. Featuring an 8. 75" outside diameter and a 1" fixed bore, this component is essential for maintaining correct static pressure and airflow ratings in commercial air handling units. Constructed from high grade cast iron, it provides superior vibration dampening and thermal stability compared to lighter duty