Emerson Alco 061677 Expansion Valve

The Emerson Alco 061677 is a heavy-duty TIR 55 HC Thermal Expansion Valve designed for high-tonnage R22 refrigerant systems. As a critical component in the T-Series Take-Apart line, this 55-ton valve offers balanced port construction to compensate for fluctuating head pressures and varying evaporator loads, ensuring stable superheat control across its medium temperature charge range. The stainless steel power assembly provides superior corrosion resistance, while the 10-foot capillary tube allows for flexible bulb placement on large-scale evaporators. Since this is a "less flange" model, it is intended for integration into existing T-series assemblies where the replaceable cage and flange are already in place or sourced separately. For technicians performing field service, the external superheat adjustment and take-apart design simplify maintenance, allowing for component-level replacement without de-brazing the entire valve body from the line.

• Stable Superheat Regulation: The balanced port design minimizes the impact of varying inlet pressures, preventing hunting in large tonnage HVACR applications.
• Enhanced System Durability: Features a stainless steel power element to resist rust and premature failure in high-humidity environments.
• Field Serviceability: The take-apart construction allows for quick replacement of internal components like the 061677 expansion valve cage or power head.
• Bi-Flow Capability: Engineered for versatility in both cooling-only and heat pump cycles when paired with appropriate system configurations.
• Precision Metering: Optimized for medium temperature R22 systems, providing reliable refrigerant flow control for 55-ton capacity requirements.

Is the flange included with the Emerson 061677?
No, this specific part number is the valve body and power assembly only. You must use your existing T-series flange or purchase a compatible Emerson Alco flange separately to complete the installation.

Can I use this valve with R407C?
While R407C is often used as a retrofit for R22, this valve is specifically charged for R22 medium-temp applications. Check your pressure-temperature (PT) charts and oil compatibility before attempting a refrigerant retrofit.

What is the maximum working pressure for the TIR 55 HC?
The T-Series expansion valves are rated for a maximum working pressure of 450 psig, making them suitable for standard R22 commercial refrigeration and air conditioning cycles.

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.