Sporlan 169421 Txv External Equalizer 3 Ton R-404A Low Temp

Product Description

The SPORLAN 169421 is a thermostatic expansion valve (TXV) with external equalizer, designed for use with R-404A refrigerant in low-temperature refrigeration applications. Rated at 3 tons with a 5-ton bulb equivalent, this valve meters refrigerant flow into the evaporator to maintain proper superheat across a range of load conditions. Connections are 3/8-inch and 1/2-inch ODF, suitable for sweat installation. It weighs 1.26 pounds. Licensed refrigeration technicians and HVAC-R mechanics are the primary installers of this component.

This valve is suited for low-temperature commercial refrigeration systems operating on R-404A, such as reach-in coolers, walk-in freezers, and display case evaporator circuits. The external equalizer port allows the valve to maintain accurate superheat control in systems where significant pressure drop exists across the evaporator. Typical installations involve evaporator coils in commercial refrigeration equipment where precise refrigerant metering is critical to system efficiency and compressor protection.

Key Features

• Rated for R-404A refrigerant in low-temperature refrigeration service
• 3-ton capacity with 5-ton bulb equivalent for accurate superheat sensing
• External equalizer design compensates for evaporator pressure drop
• 3/8-inch and 1/2-inch ODF sweat connections for standard field installation
• Compact form factor at 1.26 pounds for easy handling in tight equipment spaces

Compatibility

Designed as an OEM-style replacement thermostatic expansion valve for low-temperature commercial refrigeration systems using R-404A refrigerant with external equalizer evaporator circuits.

Installation Notes

Installation should be performed by an EPA 608-certified technician following applicable refrigeration safety codes. Recover and reclaim all system refrigerant before opening the refrigerant circuit. Sweat connections require proper nitrogen purge during brazing to prevent internal oxidation. Mount the sensing bulb securely to the suction line at the evaporator outlet per standard TXV installation practice, and connect the external equalizer line downstream of the bulb location.

Technical Specifications

• Refrigerant: R-404A
• Application: Low Temperature
• Valve Capacity: 3 Ton
• Bulb Equivalent: 5 Ton
• Equalizer Type: External
• Connection Size: 3/8-inch and 1/2-inch ODF
• Item Weight: 1.26 pounds

Standard Information

• Brand: SPORLAN
• Manufacturer Part Number: 169421