using the specific OEM pressure switch is recommended to ensure the furnace operates within the exact tolerances defined by the manufacturer’s combustion design

industrial water heater

including EV210B through EV250B series

always verify the specific orifice and diaphragm size before installation

For spring-return models

Carrier 331709-798 TXV Valve Refrigerant using the specific OEM pressureThe Carrier 331709 798 R410A 4 Ton TXV Valve is a critical metering device designed for evaporator coil applications in high efficiency residential and light commercial systems. This OEM thermostatic expansion valve ensures precise refrigerant flow control by monitoring the superheat of the suction line and adjusting the orifice to maintain optimal heat transfer across the coil. As a direct replacement for 331709 772, this valve is engineered to