The Lennox 80W51 Pressure Switch is an essential safety component designed for Lennox furnaces and higher-efficiency HVAC systems

meaning it can close one circuit while opening another

This brass component facilitates a secure

while the Teflon-coated discs and silicone elastomer soft seating deliver vibration-resistant operation and reliable sealing even in demanding environments

Is a solenoid valve required for system pump-down

Browning B45 Belt 320788-703 The Lennox 80W51 Pressure SwitchThe Browning B45 Belt is a heavy duty Type B Super Grip Belt engineered for high demand HVACR power transmission and industrial drive systems. Technicians rely on the wrapped V belt construction of the B45 to provide superior flexibility and resistance to sudden load changes, which is critical for fan and blower motor maintenance where slipping or misalignment can lead to premature failure. Featuring a 48 inch outside diameter and a 21 32 inch top