Emerson Alco 065555 Expansion Valve

The Emerson Alco 065555, specifically the TCLE 5 HW 100, is a high-performance thermal expansion valve (TXV) designed for precision superheat control in commercial refrigeration and air conditioning systems. This unit is engineered for R22 and R407C refrigerants, providing a 5-ton nominal capacity. Featuring a 5-foot capillary tube and a 1/4" SAE flare external equalizer, it ensures accurate sensing and response to evaporator pressure fluctuations. The MOP 100 PSI charge protects the compressor from high suction pressures during startup or high-load conditions. The TCLE series utilizes a take-apart design with a stainless steel power assembly, allowing for easier serviceability and component replacement in the field. This externally equalized TXV is essential for systems with significant pressure drops across the evaporator, ensuring the superheat setting remains stable across varying operating parameters. The flange-less design requires the appropriate cage assembly for secure installation into the liquid line.

Key Technical Benefits

• Precise Mass Flow Control: Optimized for R22 and R407C systems to maintain consistent evaporator efficiency.
• System Protection: Integrated 100 PSI Maximum Operating Pressure (MOP) prevents motor overload by limiting suction pressure.
• Field Serviceability: The take-apart TCLE 5 HW 100 design allows the power head and cage to be serviced without removing the entire valve body.
• Corrosion Resistance: Features a stainless steel power assembly to ensure long-term durability in harsh mechanical environments.
• Accurate External Equalization: The 1/4" SAE flare connection compensates for evaporator pressure drop, preventing flood-back.

Commonly Asked Questions

What is the purpose of the 100 PSI MOP charge?
The MOP 100 charge limits the pressure in the evaporator to 100 PSI. This prevents the compressor from drawing excessive current during a hot pull-down or high-ambient startup, protecting the internal windings from overheating.

Can the TCLE 5 HW 100 be used with R410A?
No, this specific Emerson Alco valve is calibrated for the pressure-temperature characteristics of R22 and R407C. Using it with R410A will result in incorrect superheat control and potential system failure.

Why choose an externally equalized TXV over an internal one?
An externally equalized expansion valve is required when the pressure drop through the evaporator is significant. It senses pressure at the outlet of the evaporator rather than the valve inlet, ensuring the superheat is measured accurately regardless of coil resistance.

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.