Daikin-McQuay 300047687 Power Head

The Daikin-McQuay 300047687 Power Head is a precision-engineered TXV power head replacement designed for high-performance thermal expansion valve regulation in commercial HVACR systems. Utilizing the KT-85-ZN element, this component ensures accurate refrigerant metering by responding to suction line temperature and pressure changes, maintaining optimal superheat levels. This power head is specifically compatible with Daikin Applied and McQuay International chillers and rooftop units, providing a direct fit for failed or degraded thermostatic elements. The stainless steel diaphragm and heavy-duty construction offer resistance to vibration and mechanical fatigue, critical for preventing liquid slugging in the compressor. For service technicians, this HVAC expansion valve part facilitates a straightforward field replacement without requiring a full valve body removal, minimizing system downtime. Proper installation involves ensuring solid thermal contact between the sensing bulb and the suction line to maintain precise evaporator efficiency and system stability under varying load conditions.

• Precise Superheat Control: The KT-85-ZN element provides consistent bulb pressure to regulate refrigerant flow and protect the compressor.
• Direct OEM Compatibility: Engineered as a genuine Daikin-McQuay 300047687 replacement to ensure seamless integration with existing TXV bodies.
• Field Serviceable Design: Allows for the replacement of the power element alone, reducing labor time and avoiding the need for extensive refrigerant recovery.
• Robust Construction: Built to withstand commercial operating pressures and environmental stressors common in industrial HVACR applications.

How do I verify if the 300047687 is the correct power head for my TXV?
Confirm the model number on the existing valve body or power head disk. This KT-85-ZN element is designed for specific Daikin-McQuay valve configurations; check your equipment technical manual for exact part cross-referencing.

What are the signs of a failing TXV power head?
Common indicators include improper superheat readings, an evaporator coil that is starving for refrigerant, or high suction pressure. If the bulb has lost its charge, the valve will typically fail in the closed position.

Does this power head include the sensing bulb?
Yes, this assembly includes the power element disk, capillary tube, and the sensing bulb as a single hermetically sealed unit ready for installation.

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.