ensuring the heat exchanger is properly cooled and static pressure is maintained across the ductwork

Manual Reset Safety: Featuring a manual reset mechanism that prevents automatic cycling

this model is designed strictly for single-stage heating and cooling

where maintaining combustion efficiency is paramount for operational safety

OEM Reliability: Direct replacement for Carrier HK02SB024

Carrier KSBTX0401PUR Expansion Valve 321142-301 ensuring the heat exchanger isThe Carrier KSBTX0401PUR Expansion Valve is a hard shutoff TXV kit engineered for R 410A refrigerant residential applications. This balanced port expansion valve is a critical OEM HVAC replacement part for aluminum fan coils in 4 ton to 5 ton cooling systems. Designed for high performance refrigerant flow control, the kit features a bi flow design that ensures operational stability during both cooling and heating cycles in heat pump applications. By