Mueller Industries W 08003 Copper Pipe Union 1/2 in

Product Description

The MUELLER INDUSTRIES W 08003 is a wrot copper pipe union designed for sweat-solder connections in copper piping systems. Sized at 1/2 inch with a C x C (copper-to-copper) end configuration, this union allows plumbers and pipefitters to break and reconnect a copper line without cutting pipe. Wrot copper construction provides superior pressure integrity and long service life compared to cast fittings. The solder joint design is compatible with standard 50/50 and lead-free solder practices required under current plumbing codes. At 0.1146 pounds, the fitting is compact and easy to handle in tight mechanical spaces.

This union is suited for residential and light commercial plumbing installations where a serviceable connection point is needed in a copper water supply or hydronic heating line. Typical applications include domestic hot and cold water distribution, radiant heating loops, and boiler piping where future access for service or equipment replacement is anticipated. The 1/2 inch size is the most common branch and supply size in residential construction.

Key Features

• Wrot copper construction for higher pressure ratings and cleaner grain structure than cast copper alloy
• C x C solder joint ends compatible with standard sweat-solder technique
• 1/2 inch fitting size with 5/8 inch outside diameter
• Meets ASME B16.22, ASME B16.18, ASME B16.15, ASME B16.24, ASME B16.50, and NSF 61G standards
• NSF 61G certification supports use in potable water systems
• Lightweight at 0.1146 pounds for easy single-hand positioning during soldering

Compatibility

Designed as an OEM-style drop-in replacement union for 1/2 inch copper piping systems using sweat-solder C x C connections in residential and commercial plumbing applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and ASME standards. Shut off and drain the water supply before cutting into any pressurized line. Clean and flux all mating pipe ends thoroughly before applying heat to ensure a full, leak-free solder joint. Do not apply excessive heat to the union nut seat area, as overheating can warp the seating surfaces and compromise the union seal.