Expansion Valve — R-134a (71R8300)

Description

Overview

Choose 71R8300 for steady feed and fast pull-down. It fits common #6/#10 line sets and uses #8 O-ring evaporator ports, so installs stay simple and repeatable. As a result, you get stable vent temps and less risk of liquid floodback.

Features

• Accurate metering to hold target 5°F superheat

• Compressor protection during load swings

• Block-style body with standard O-ring connections

• 1/4″ mounting holes for secure placement

Specifications

• Refrigerant: R-134a

• Type: Thermostatic expansion valve (TXV)

• Line Connections: #6 (3/8″) F-O-Ring inlet; #10 (5/8″) F-O-Ring outlet

• Evaporator Fittings: #8 (1/2″) F-O-Ring in/out

• Superheat Rating: 5°F

• Pressure Limit: 80 psig @ 40°F

• Mounting: 1/4″ mounting holes

• Part Number: 71R8300

Interchange Numbers

04-1244, 12-0612A, 12-0613, 12-0613A, 1696476, 232-8556, 3916657, 4379-RD568680, 4379-RD568680, 4379-RD568680P, 4379-RD568680P, 4379-RD568681, 60012-4401, 60012-5001, 60058-3401, 71R8300, ABP N83 308011, RD-5-6868-0P, RD-5-6868-0P, RD-5-6868-0P, RDH RD5 6868 0, RDHRD568680P, RDT71R8300, RHD RD5 6868 0

Installation Notes

Mount the valve firmly, strap and insulate the sensing bulb on the outlet tube, and replace the receiver-drier and O-rings. Then pull a deep vacuum, charge to spec, and verify superheat and pressures across blower speeds.