Sporlan 169279 ERSE-4-ZP Thermostatic Expansion Valve External Equalizer 4 Ton R-404A Low Temp 1/2 X 7/8 X 1/4 Inch Odf

Product Description

The Sporlan 169279 ERSE-4-ZP is a thermostatic expansion valve (TXV) designed for low temperature refrigeration systems using R-404A refrigerant. This valve controls refrigerant flow into the evaporator coil by responding to suction line temperature and pressure. Proper refrigerant metering keeps the evaporator operating at peak efficiency and prevents liquid slugging back to the compressor. The ERSE-4-ZP is built for commercial and industrial low temp applications such as walk-in freezers, display cases, and cold storage rooms where tight temperature control is critical. HVAC and refrigeration technicians rely on thermostatic expansion valves like this one to maintain system superheat within a target range, protecting compressors and maximizing system efficiency. This valve carries a nominal capacity of 4 tons, making it appropriate for medium-sized refrigeration systems. It uses an external equalizer connection, which is standard practice on evaporators with significant pressure drop across the coil. The external equalizer senses pressure at the evaporator outlet rather than the inlet, giving the valve a more accurate reference point for superheat control. The refrigerant code ZP identifies this valve as factory charged and calibrated specifically for R-404A, a common refrigerant in low temperature commercial refrigeration. Connections measure 1/2 inches inlet, 7/8 inches outlet, and 1/4 inches ODF for the external equalizer port. The valve body and components are constructed from brass, offering corrosion resistance and long service life in refrigeration environments. The sensing bulb capillary tube is 5 feet in length, providing enough reach to position the bulb correctly on the suction line away from the valve body. Element size 43 corresponds to the Sporlan element rating system used to match the power element to the specific refrigerant charge. This unit weighs 1.16 pounds per each. It is a direct Sporlan factory part identified by model number ERSE-4-ZP and Sporlan number 169279, ensuring compatibility when cross-referencing against existing system documentation or service manuals.

• Designed for low temperature R-404A refrigeration systems up to 4 tons nominal capacity
• External equalizer design provides accurate superheat control on evaporators with high pressure drop
• Brass body construction with ODF connections and 5-foot capillary tube for reliable field installation

Product Highlights

The Sporlan ERSE-4-ZP thermostatic expansion valve delivers precise refrigerant metering for low temperature R-404A systems, combining an external equalizer design and brass construction for dependable long-term performance in commercial refrigeration applications.

Product Information

Standard Information

• Brand: SPORLAN
• Manufacturer Part Number: 169279

Technical Specifications

• Model: ERSE-4-ZP
• Application: Low Temp Refrigeration
• Refrigerant: R-404A
• Refrigerant Code: ZP
• Nominal Capacity: 4 Tons
• Equalizer: External
• Inlet x Outlet Connections: 1/2 inches x 7/8 inches x 1/4 inches ODF
• Connection Ends: ODF
• Port Size: 1/4 inches
• Element Size: 43
• Capillary Tube Length: 5 feet
• Material: Brass
• Color Finish: Brass
• Item Weight: 1.16 pounds per EA