Daikin-McQuay 031780500 Power Head

The Daikin-McQuay 031780500 is an OEM thermal expansion valve power head engineered for precise refrigerant metering in industrial and commercial HVACR systems. Designed as a critical replacement component for Daikin-McQuay HVAC equipment, this power head features a 5-foot capillary tube and an integrated sensing bulb to ensure accurate superheat control. By monitoring temperature at the evaporator outlet, the 031780500 TXV power head modulates refrigerant flow through the expansion valve assembly, protecting compressors from liquid slugging while maximizing heat exchange efficiency. This high-grade HVAC replacement part is built for durability in continuous-duty applications where maintaining tight thermal tolerances is required. Contractors can rely on this Daikin 031780500 to restore system performance to factory specifications, ensuring the thermostatic expansion valve operates with the sensitivity needed for optimal refrigerant flow management and long-term system reliability.

• Precise Superheat Regulation: Facilitates accurate refrigerant modulation to maintain optimal evaporator efficiency.
• Extended 5' Capillary: Provides flexibility for sensing bulb placement at the suction line to capture the most accurate temperature readings.
• OEM Compatibility: Specifically designed for Daikin-McQuay systems, ensuring a direct fit without the need for field modifications.
• Heavy-Duty Construction: Engineered to withstand high-pressure environments and temperature fluctuations typical of commercial HVACR service.

• What systems are compatible with the Daikin 031780500? This power head is a direct OEM replacement for various Daikin and McQuay air handlers, chillers, and rooftop units utilizing compatible thermal expansion valves.
• How does the 5-foot capillary improve performance? The length allows technicians to route the sensing bulb away from external heat sources, ensuring the diaphragm receives a true temperature signal from the evaporator outlet.
• Does this power head include the sensing bulb? Yes, the 031780500 features a factory-connected sensing bulb at the end of the capillary tube.

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.