York S1-168802 Expansion Valve 320788-703 This furnace relay manages the

This furnace relay manages the critical timing between the thermostat call and the blower motor engagement

It allows the technician to calibrate the start point and span

25-inch face uses red and blue color-coded scales for rapid diagnostic checks of system vitals

this OEM Lochinvar replacement part prevents frequent "No Flame" errors and nuisance shutdowns caused by drifting tolerances found in aftermarket alternatives

Built with a 48Z frame and an open drip-proof (ODP) enclosure

York S1-168802 Expansion Valve 320788-703 This furnace relay manages theSecure precise refrigerant metering for your commercial HVAC equipment with the York S1 168802 Expansion Valve. Designed for high performance thermal management, this thermal expansion valve (TXV) is engineered to regulate R 410A refrigerant flow into the evaporator coil with exacting precision. The ODF connection (Outside Diameter Fitting) ensures a reliable, leak resistant braze joint, making it a staple for technicians maintaining 5 ton York air