Emerson Alco 027918 Valve

The Emerson Alco 027918 Valve, specifically the TER series thermostatic expansion valve, is engineered for high-capacity commercial refrigeration and AC applications. Featuring a 7/8" ODF sweat or 1-1/8" ODM inlet and an identical 7/8" ODF / 1-1/8" ODM outlet, this straight-thru body flow valve ensures minimal pressure drop across the orifice. The balanced port construction compensates for varying head pressures, maintaining precise superheat control even under fluctuating ambient conditions. This specific Alco T-Series valve utilizes a stainless steel power assembly to resist corrosion and prevent diaphragm fatigue. For technicians performing a TEV replacement, the 027918 provides reliable liquid refrigerant metering for large-scale evaporators. The modular design allows for field-serviceable components, making it a standard choice for contractors requiring HVAC expansion valve durability. Ensure the external equalizer line is properly piped to sense suction pressure accurately at the evaporator outlet for optimal refrigerant flow control and system efficiency.

• Precise Superheat Regulation: The balanced port design maintains stability across wide ranges of operating pressures and evaporator loads.
• Versatile Connection Options: Dual-sized ODF/ODM fittings provide flexibility for 7/8 inch or 1-1/8 inch piping configurations.
• Robust Power Assembly: Large diameter stainless steel diaphragm provides high-force transmission for consistent valve modulation.
• Serviceability: Designed with a straight-through flow pattern that simplifies header piping and maintenance access.

What is the primary benefit of the balanced port in the 027918 model?
The balanced port design cancels out the influence of high-side liquid pressure on the valve pin, preventing "hunting" and ensuring stable superheat during low-ambient operation.

Can this valve be used with multiple refrigerants?
Compatibility depends on the specific power element charge; always verify the refrigerant code on the valve body to match your system's R-number and temperature range.

Does the straight-thru body flow affect installation?
The straight-thru configuration allows for a more compact footprint in the liquid line compared to angle-body valves, simplifying retrofit applications in tight mechanical spaces.

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.