71R8050 Red Dot 18 in. External Equalizer Valve – 1½ Ton

The Red Dot 71R8050 External Equalizer Valve is designed for mobile air conditioning systems that require precise refrigerant metering and stable evaporator performance under varying load conditions. An external equalizer valve senses outlet pressure downstream of the evaporator, allowing the valve to respond accurately to pressure changes and maintain consistent superheat.

This valve features an 18-inch equalizer tube and 18-inch capillary tube, along with standard male flare inlet and outlet connections, making it a common fit for heavy-duty, on-highway, agricultural, and off-highway HVAC applications. Rated at 1½ ton, the 71R8050 is widely used across OEM and aftermarket mobile climate control systems.

Use the specifications and interchange numbers below to confirm the correct match before ordering.

Product Specifications

• Part Type: External Equalizer Expansion Valve

• Part No.: 71R8050

• Factory No.: RD-4126-1P

• Capacity Rating: 1½ Ton

Connections:

• Inlet: #6 (3/8 in.) Male Flare

• Outlet: #8 (1/2 in.) Male Flare

• Nut: 1/4 in. Female Flare

Tube Lengths:

• Equalizer Tube Length: 18 in.

• Capillary Tube Length: 18 in.

• Application: Mobile A/C systems requiring external pressure equalization

OEM & Interchange Numbers

OEM Numbers:

• Freightliner: 02-7010151, A22-14423-000

• Navistar: 1691711-C1, 173899-C1, 2684701-C1, 426147-C1

• Volvo: 176190, 60012-0011

• Western Star: 02-7010501, 02-7086617

• PACCAR: 55760, HV32668, RD-4126-1P

Aftermarket / Interchange:

• Texas Truck AC: 450-6800, 450-6800A

• AirSource / MEI: 1610

• Alliance: ABP N83 308015

• AP Air: 900-165, 900-170

• Bergstrom: 540175

• Climatech: EA1005, EA10050

• CoolCab: 932138, 932140, 932143

• CoolStar / MEI: 525-1604

• Euclid: E-805012, E-805013

• Fleetrite: ZGG11838

• Four Seasons: 38606, 38615, 38725, 38726, 38869

• Kysor: 1899008 (404021 old)

• Motivaire: 1-1838

• Murray: 207363

• Omega: 31-10703-AM, 31-10920-AM

• Parker: 031134-300, 31134-300

• Primatech: PTAC1610

• Red Dot Aftermarket: 71R8050

• Roadforce: RF1835401135

• Sunair: EXV-2023

• Truck Air / MEI: 12-3013A

• TruckAC+: T3518

• TTA/C: 16-7400

Additional Interchange References:
02-7010501, 031134-300, 04-15002, 101-101, 12-0800A, 12-3013, 232-8550, 4379-RD41261, 4379-RD41261P, RDHRD41261P, RDT71R8050