Mueller Industries W 01023 Copper Reducer 1/2 X 3/8 in

Product Description

The MUELLER INDUSTRIES W 01023 is a wrot copper pipe reducer fitting designed to transition from a 1/2-inch to a 3/8-inch copper line using a standard solder joint (C x C) connection. Wrot copper construction provides dense grain structure and reliable pressure integrity, making it suitable for potable water, refrigeration, and hydronic piping systems. The fitting meets multiple ASME dimensional and material standards. At 0.0257 pounds, it is a compact, lightweight component sized for tight spaces in mechanical chases, walls, and equipment connections. Licensed plumbers and HVAC technicians install this fitting wherever a copper-to-copper reduction is needed in a brazed or soldered assembly.

This reducer is used in residential and light commercial plumbing, HVAC refrigerant piping, and hydronic systems where a line size reduction from 1/2 inch to 3/8 inch is required. Common applications include domestic water supply branch transitions, refrigerant line sets, and radiant heating distribution manifolds. The C x C end configuration accepts standard copper tubing on both ends and is joined using a 95/5 or 50/50 solder, or with silver-bearing alloy for refrigerant service depending on applicable codes.

Key Features

• Wrot copper construction for high-density grain structure and leak-resistant solder joints
• C x C end connections accept standard copper tube on both ends
• Solder joint style compatible with both plumbing and refrigerant line applications
• Outside diameter 5/8 inch x 1/2 inch for proper tube seating and capillary action
• Meets ASME B16.22, ASME B16.18, ASME B16.15, and related dimensional standards

Compatibility

Designed as an OEM-style replacement and standard-use fitting for copper tube systems requiring a 1/2-inch to 3/8-inch reduction with C x C solder joints in plumbing and HVAC applications.

Installation Notes

Installation is performed by a licensed plumber or HVAC technician following applicable local plumbing codes and IFGC or IPC requirements. Shut off and depressurize the water or refrigerant system fully before cutting into existing lines. Clean tube ends and fitting cups with emery cloth and apply appropriate flux before soldering. Do not apply flame directly to the fitting cup for extended periods, as overheating wrot copper can compromise joint integrity.