Sporlan 110428 FSE-1/2-Z-3X4SAE TXV

The Sporlan 110428, professionally identified as the FSE-1/2-Z-3X4SAE, is a high-performance thermostatic expansion valve (TXV) engineered for precision refrigerant metering in low-temperature refrigeration systems. This 1/2-ton capacity valve is specifically factory-calibrated for R404A refrigerant, ensuring optimal evaporator efficiency and preventing compressor liquid slugging. Built with a durable forged brass bar body, it features 3/8" SAE flare inlet and 1/2" SAE flare outlet connections, making it a reliable drop-in solution for small-scale walk-in coolers, freezers, and reach-in cases.

As a veteran-preferred HVACR refrigeration part, the 110428 utilizes a Z-charge thermostatic element designed for stable superheat control across varying load conditions. The internal equalizer design eliminates the need for an external pressure line, simplifying installation in systems without significant distributor pressure drops. Contractors value the 110428 for its field-replaceable element and stainless steel diaphragm, which provide long-term serviceability and consistent seat alignment. Whether you are performing a commercial repair or a new system build, this Sporlan expansion valve delivers the technical accuracy required for critical cooling applications.

• Precise Superheat Control: The field-proven stainless steel diaphragm and Z-charge power element provide accurate refrigerant flow management in low-temp environments.
• Streamlined Installation: Features a 3/8" x 1/2" SAE flare connection and internal equalization, reducing piping complexity.
• Field Serviceable: Designed with a replaceable thermostatic element and an accessible 100-mesh inlet strainer for easy maintenance.
• Durable Construction: Forged brass bar body withstands high-pressure cycles and prevents corrosion in harsh commercial refrigeration settings.

Is the Sporlan 110428 compatible with refrigerants other than R404A?
This specific model is factory-calibrated for R404A. While some technicians use similar bodies for R502 or R408A, we recommend matching the thermostatic charge to the specific refrigerant for peak ASHRAE performance.

What is the difference between the 110428 and the FSE-1/2-Z-3X4SAE?
They are identical. The 110428 is the numeric part number used for inventory tracking, while FSE-1/2-Z-3X4SAE is the technical nomenclature describing the valve series, capacity, charge, and connection size.

Does this valve require an external equalizer line?
No, this model is internally equalized, meaning it senses suction pressure at the valve outlet. It is best suited for systems with low pressure drop across the evaporator.

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.