Always install the sensor on insulated conductors to ensure safe operation and compliance with local electrical codes

For 3-15 PSIG requirements

3 red flashes typically indicate a pressure switch that failed to close

Key Benefits Dual-Action Core: Combines 80% molecular sieve for moisture removal with 20% activated alumina for superior acid adsorption

Thermal Protection: Prevents nuisance tripping by staggering the electrical draw of resistive heating elements

Nordyne 664344R Check Valve 326070-701 Always install the sensor onThe Nordyne 664344R is a high performance R410A 3 Ton TXV Check Valve designed for precise refrigerant metering in residential and light commercial HVAC systems. This OEM Nordyne replacement part acts as a critical thermal expansion device, sensing evaporator temperature and pressure to regulate flow and maintain the ideal superheat. Engineered for 3 ton capacity units, the 664344R check valve ensures consistent cooling performance and prevents