Nordyne 669564R TXV Valve

The Nordyne 669564R TXV Valve is a critical metering component designed for 2-ton R410A air conditioning systems and heat pumps. As the direct OEM replacement for Nordyne 669564, this thermostatic expansion valve ensures precise refrigerant flow control across the evaporator coil, maintaining optimal superheat levels and preventing liquid slugging to the compressor. Engineered for Nordyne, Miller, Intertherm, and Broan equipment, this valve utilizes a bolt-on design for straightforward field installation, making it a preferred choice for residential HVAC contractors. By transitioning from fixed orifice pistons to this high-efficiency TXV, technicians can significantly improve system performance and maintain the rated SEER efficiency of the unit. The 669564R thermal expansion valve is built to withstand high-pressure R410A environments, providing reactive modulation to varying heat loads for consistent indoor climate control and specialized protection for the refrigeration circuit.

• Precise Superheat Regulation: Maintains the exact refrigerant flow required for 24,000 BTU cooling loads.
• Direct OEM Compatibility: Verified replacement for Nordyne 669564, ensuring exact mechanical fit and pressure ratings.
• R410A Optimized: Specifically calibrated for the pressure-temperature characteristics of R410A systems.
• Enhanced System Reliability: Prevents evaporator flood-back and maximizes heat exchange efficiency.
• Simplified Installation: Designed as a bolt-on TXV kit for rapid replacement in the field.

Is the Nordyne 669564R compatible with R22 systems?
No, this valve is specifically calibrated for R410A refrigerant and should not be used in R22 applications due to different pressure requirements and spring rates.

Does this valve replace the older 669564 model?
Yes, the 669564R is the current manufacturer-designated direct replacement for the discontinued 669564 part number.

What tonnage is this thermostatic expansion valve rated for?
This specific model is engineered for 2-ton (24,000 BTU) residential cooling and heat pump systems.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.