Lennox 17U20 Pressure Switch 321142-301 Can I replace just the

Can I replace just the O-ring or must I replace the entire valve

Durable Construction: Built with corrosion-resistant materials to withstand high-pressure R-22 environments

allowing contractors to easily mount water gauge glasses and tri-cocks directly to the controller body without complex manifold piping

Industrial Build Quality: High-torque motor designed to handle the variable speed demands of modulating condensing boilers

and F29-0228

Lennox 17U20 Pressure Switch 321142-301 Can I replace just theThe Lennox 17U20 Pressure Switch is a high precision sensing component engineered for critical monitoring in residential and commercial HVACR systems. This OEM Lennox 104371 10 replacement part is designed to actuate at 1. 00 inch W. C., providing essential safety interlocking for furnace draft inducer motors and air handling units. Built with a sensitive diaphragm and a robust SPST N. O. contact configuration, it ensures the electrical circuit closes