Carrier 30RA502112 Expansion Valve

The Carrier 30RA502112 Expansion Valve is a critical thermostatic metering device engineered for precise refrigerant control in AquaSnap 30RAP and 30RB air-cooled chillers. As the direct replacement for EA02ZF512, this OEM component ensures the pressure drop across the refrigerant liquid line is maintained to prevent liquid slugging and compressor damage. Designed for R-410A refrigeration systems, the 30RA502112 utilizes a sensing bulb and external equalizer to modulate flow based on evaporator superheat, maximizing heat exchange efficiency in industrial and commercial HVAC circuits. While the connection sizes remain 7/8” x 7/8”, technicians should note that the 30RA series update may involve slight inlet/outlet orientation shifts compared to legacy EA02ZF512 models, potentially requiring minor field piping adjustments during HVAC valve replacement. Integrating this thermal expansion valve (TXV) maintains the factory-specified performance of your Carrier liquid chiller, protecting the integrity of the scroll compressor and ensuring stable system superheat across varying ambient temperatures.

• OEM Compatibility: Serving as a direct replacement for EA02ZF512, it fits seamlessly into Carrier 30RA, 30RAP, and 30RB series chillers.
• Precise Superheat Regulation: Specifically calibrated for R-410A refrigerant to maintain optimal thermal balance and prevent evaporator freezing.
• Compressor Protection: Accurately meters refrigerant flow to eliminate liquid carryover, extending the operational life of chiller compressors.
• Durable Construction: Built to withstand high-pressure industrial environments, ensuring consistent liquid line metering performance.

• Is the 30RA502112 a drop-in replacement for the EA02ZF512? Yes, it is the official successor. While the 7/8" connection sizes are identical, the body geometry may require minor tubing tweaks during installation to line up with existing suction line ports.
• What symptoms indicate this expansion valve needs replacement? Look for low suction pressure accompanied by high superheat, or frost accumulation at the valve outlet. These are classic signs of a restricted or "starving" evaporator.
• Does this valve include the sensing bulb? Yes, this is a complete thermostatic expansion valve assembly including the power head and sensing bulb for accurate temperature feedback.

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.