Sporlan 128503 Thermostatic Expansion Valve Type S SGE-6-GP 6 Ton 5/8 X 7/8 Inch Odf R-23

Product Description

The Sporlan 128503 is a thermostatic expansion valve (TXV) designed for ultra low temperature refrigeration applications. It is built around the SGE-6-GP model platform and uses R-23 refrigerant. This Type S valve delivers precise refrigerant metering to keep evaporator superheat stable under demanding cold storage and low temp process cooling conditions. HVAC and refrigeration technicians rely on thermostatic expansion valves like this one to regulate refrigerant flow into the evaporator coil. By responding to both suction line temperature and evaporator pressure, the valve ensures the system operates at peak efficiency without flooding or starving the evaporator. The Sporlan 128503 has a nominal capacity of 6 tons, making it well suited for medium to large commercial refrigeration systems running R-23. The inlet connection measures 5/8 inches ODF and the outlet connection measures 7/8 inches ODF, giving technicians clear sizing guidance during installation or replacement. The valve uses an external equalizer connection, which is the correct design choice for evaporators with significant pressure drop across the coil. External equalization ensures the valve responds to actual evaporator outlet pressure rather than inlet pressure, improving control accuracy. The thermostatic charge type is GP, a designation Sporlan uses for specific low temperature refrigerant and application pairings. The capillary tube length is 5 feet, or 1.524 meters, providing adequate reach for most sensing bulb placements on the suction line. Nominal operating conditions are rated at an evaporator temperature of 40 degrees Fahrenheit and a liquid temperature of 100 degrees Fahrenheit, with a nominal pressure drop of 60 psi. Maximum operating pressure is rated at 450 psi. The valve includes a 12 mesh permanent strainer to protect internal components from debris. Filter element type is 83. This valve is a direct fit for refrigeration contractors and service technicians working on ultra low temp systems and looking for a reliable Sporlan TXV replacement or new installation component.

• Nominal 6 ton capacity rated for ultra low temperature refrigeration with R-23 refrigerant
• External equalizer design ensures accurate refrigerant flow control on evaporators with notable pressure drop
• 5/8 inches ODF inlet and 7/8 inches ODF outlet connections with 5 foot capillary tube and 12 mesh permanent strainer included

Product Highlights

The Sporlan 128503 Type S thermostatic expansion valve provides reliable, precise refrigerant metering for ultra low temperature R-23 refrigeration systems at a 6 ton nominal capacity. Its external equalizer design and GP thermostatic charge make it a proven choice for demanding commercial refrigeration service work.

Product Information

Standard Information

• Brand: SPORLAN
• Manufacturer Part Number: 128503

Technical Specifications

• Model Number: SGE-6-GP 5X7 ODF 5ft
• Product Type: S-Valve (Thermostatic Expansion Valve)
• Nominal Capacity: 6 ton
• Refrigerant Type: R-23
• Application: Ultra Low Temp Refrigeration
• Inlet Connection Size: 5/8 inches ODF
• Outlet Connection Size: 7/8 inches ODF
• Equalizer Method: Externally Equalized
• Thermostatic Charge: GP
• Capillary Tube Length: 5 feet (1.524 m)
• Evaporator Temperature (Nominal): 40 degrees F (5 degrees C)
• Liquid Temperature (Nominal): 100 degrees F (37.8 degrees C)
• Nominal Pressure Drop: 60 psi (4 bar)
• Maximum Operating Pressure: 450 psi (31 bar)
• Strainer Type: 12 Mesh Permanent
• Filter Element Type: 83