making it an essential component for high-limit safety applications

Installing a switch with a higher opening temperature creates a safety hazard

for line voltage (120V/240V) electric baseboard systems

Since it is a Normally Closed switch

Carrier 331709-757 TXV Kit 318973-401 making it an essential componentWhen you're dealing with a 4 to 5 ton Carrier, Bryant, or Payne residential unit that isn't maintaining superheat, the Carrier 331709 757 TXV Kit is the specified OEM solution for R 410A refrigerant circuits. This thermostatic expansion valve (TXV) is a high precision metering device engineered to modulate refrigerant flow into the evaporator coil based on heat load, preventing liquid slugging and protecting the compressor. As a hard shutoff TXV, it