The Carrier 331709-759 Expansion Valve Kit is a critical OEM replacement part designed for precision refrigerant metering in residential and light commercial cooling systems

Field Maintenance: Features a replaceable diaphragm assembly and a standard 1/8" NPT air connection for straightforward integration into existing pneumatic lines

This genuine Carrier part is optimized for detecting temperature and humidity variables

this heat pump reversing valve ensures consistent refrigerant flow control across a broad operating temperature range

utilizing an OEM MOT16174 replacement eliminates the mounting and shaft alignment issues common with universal "multi-fit" motors

AERCO 61026 Sensor 319852-301 The Carrier 331709-759 Expansion ValveThe AERCO 61026 O2 Sensor is a critical component for maintaining peak performance in high efficiency commercial boiler systems and water heaters. Engineered for precision, this oxygen sensor monitors exhaust gas concentrations to provide real time feedback to the combustion control system. By accurately measuring O2 levels, it allows for the fine tuning of the fuel to air ratio, which significantly improves fuel efficiency and reduces carbon