Carrier EA12SC450 TXV Valve

The Carrier EA12SC450 TXV Valve is a critical metering device designed for precision refrigerant flow control in residential and light commercial HVAC systems. As an OEM replacement part, this thermostatic expansion valve is specifically engineered for compatibility with Carrier air conditioning units and heat pumps, including models 35ZHXA060, 35ZHXA070, and 35ZHXA090. Formulated for the high-pressure demands of R-410A refrigerant, this valve features an adjustable superheat setting to maintain optimal evaporator efficiency across varying thermal loads.

Constructed with a durable stainless steel body and a reliable diaphragm assembly, the EA12SC450 ensures consistent subcooling performance, preventing liquid slugging and protecting the compressor from premature wear. The integrated external equalizer line and dedicated sensing bulb provide real-time pressure and temperature feedback, allowing for immediate orifice adjustments. For technicians, the sweat-connection design facilitates a hermetic seal, while the compact footprint simplifies installation within standard evaporator coil cabinets. This valve serves as the primary solution for restoring system balance when existing expansion devices exhibit "hunting" or sticking symptoms.

• Precise Superheat Regulation: Maintains a steady 12-degree superheat to maximize heat transfer efficiency.
• R-410A Optimized: Specifically calibrated for high-pressure systems to ensure long-term mechanical reliability.
• Heavy-Duty Construction: Features a robust metal housing and moisture-resistant sealing to withstand rigorous environment cycles.
• Direct OEM Fit: Eliminates the need for field modifications on compatible Carrier and Bryant equipment.
• Improved Efficiency: Minimizes refrigerant loss and lowers operational costs by optimizing the saturation point in the evaporator.

• Is this valve compatible with R-22 systems? No, the EA12SC450 is designed exclusively for R-410A refrigerant and its associated pressure ratings.
• Does the sensing bulb require specific orientation? Yes, for optimal performance on larger suction lines, the bulb should be mounted at the 4 or 8 o'clock position and properly insulated.
• Can I install this without flowing nitrogen? It is not recommended; always use a nitrogen purge when brazing the sweat connections to prevent internal oxidation and clogging.

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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.