Description
Daikin-McQuay 335053003 Thermostatic Expansion Valve
The Daikin-McQuay 335053003 is a thermostatic expansion valve (TXV) engineered for precise refrigerant flow control in commercial and residential HVAC and refrigeration systems. Featuring 1-1/8″ x 1-3/8″ ODF (Outside Diameter Flare/Solder) connections, this valve is designed as a direct OEM replacement for compatible Daikin-McQuay equipment, ensuring a proper fit and reliable long-term performance.
What Is a TXV?
A thermostatic expansion valve regulates the flow of refrigerant into the evaporator coil based on superheat conditions at the evaporator outlet. By maintaining optimal superheat, the TXV maximizes system efficiency, protects the compressor from liquid slugging, and ensures consistent cooling capacity across varying load conditions.
Key Features
- OEM Daikin-McQuay replacement part — SKU 335053003
- 1-1/8″ inlet x 1-3/8″ ODF outlet connections for secure, leak-free installation
- Precision superheat control for optimized evaporator performance
- Engineered for compatibility with Daikin-McQuay commercial HVAC and refrigeration systems
- Durable construction for long service life in demanding applications
- Helps protect the compressor by preventing liquid refrigerant carryover
Applications
- Commercial air conditioning systems
- Refrigeration equipment
- Chiller and fan coil unit service and maintenance
- OEM replacement in Daikin-McQuay equipment
Why Choose an OEM TXV?
Using a genuine Daikin-McQuay replacement TXV ensures the valve is calibrated to the system’s original design specifications. This helps maintain peak system efficiency, reduces the risk of callbacks, and extends the operational life of the overall HVAC system.







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