Emerson Alco 064961 Expansion Valve

The Emerson Alco 064961 Expansion Valve (model THR 75 HC) is a high-capacity 75-ton thermal expansion valve designed for large-scale R22 systems. This TXV features a medium temperature charge optimized for commercial refrigeration and HVAC applications requiring precise superheat control. Engineered without a flange, this unit allows for flexible installation in R22 refrigerant circuits. The 10-foot long capillary tube provides the reach necessary for remote sensing bulb placement in complex evaporator coil configurations, ensuring stable refrigerant flow and preventing liquid slugging back to the compressor during load fluctuations. For contractors managing HVAC repair or large-scale upgrades, the Emerson THR series is a standard for maintaining system efficiency and evaporator performance in high-tonnage cooling systems using HCFC-22. This valve is a critical HVAC replacement part for technicians needing a reliable, field-proven solution for industrial-grade thermal management.

• 75-ton capacity ensures reliable refrigerant metering for large-capacity commercial chillers and rooftop units.
• Compatible with R22 systems, making it an essential component for sustaining existing high-tonnage infrastructure.
• Features a 10' capillary tube for versatile bulb placement, optimizing feedback sensitivity and superheat regulation.
• The medium temperature charge prevents valve hunting and maintains stability under varied operating envelopes.
• Modular design (less flange) allows technicians to adapt the valve to specific piping requirements on-site.

What are the primary applications for the THR 75 HC?
This valve is designed for high-tonnage commercial and industrial applications specifically requiring R22 refrigerant flow control at medium temperature ranges.

Does this valve include the flange kit?
No, this model is sold as the valve body only. Technicians must source the appropriate flange according to the specific line sizes of the system being serviced.

Why use a 10-foot capillary tube?
The extended length allows the sensing bulb to be mounted at the most accurate point on the suction line, even in large evaporator sections where space is restricted.

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.