For contractors performing Spence valve maintenance

Key Benefits for the Contractor Fail-Safe Protection: Reliable mechanical spring return ensures the damper or valve returns to a safe position during power loss

With a 10 Amp contact rating

This replacement steam trap gasket is manufactured to withstand rapid thermal cycling and high differential pressures

or fails a manual lift-lever test

Lochinvar & A.O. Smith 100111020 Switch 322056-301 For contractors performing Spence valveAs a seasoned technician, you know that a Lochinvar 100111020 switch is a critical safety component designed to verify the integrity of the combustion air path. This blocked inlet switch operates as a normally closed safety limit, specifically engineered to detect air intake obstructions in high efficiency Lochinvar boilers and A. O. Smith water heaters. When the intake system faces constricted airflow due to debris or mechanical failure, the switch