Lennox 20J97 Pressure Switch 320735-701 this heavy-duty Series 53 replacement

this heavy-duty Series 53 replacement part (Part Number 137000) provides proportional feed action to maintain safe water levels in systems larger than 5

this unit is designed for indoor industrial and commercial spaces such as warehouses

as it includes the mounting bracket and linkage required for immediate installation

significantly reducing the risk of mechanical failure in high-pressure environments

This 1 1/2 inch NPT valve features a rugged bronze body and brass trim

Lennox 20J97 Pressure Switch 320735-701 this heavy-duty Series 53 replacementThe Lennox 20J97 Pressure Switch is a mission critical safety component engineered for high efficiency HVAC units requiring precise draft proving. This OEM Lennox replacement part features a 1. 15" WC set point and a Single Pole Single Throw (SPST) configuration, ensuring the combustion air inducer is generating the necessary static pressure before allowing the ignition sequence to proceed. Designed with a standard 1 4" barb connection, it integrates