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The MUELLER INDUSTRIES lh12020 is a Type L copper water tube designed for plumbing, mechanical, and DWV applications. Manufactured from C12200 copper alloy, this tube meets ASTM B88 and NSF 61 standards, making it suitable for potable water systems. Each piece is incised-marked and color-coded for quick field identification. At 1-1/4 inches outside diameter and 20 feet in length, it fits a wide range of residential and light commercial rough-in scenarios. Licensed plumbers and mechanical contractors install this tube as part of supply and drain systems where a reliable, code-compliant copper solution is required.
This tube is suited for residential and commercial plumbing supply lines, mechanical piping systems, and DWV configurations. Type L copper is a mid-wall-thickness option commonly specified where Type M is too light and Type K is unnecessary. It is appropriate for above-ground and in-wall installations in new construction and remodel work. The 20-foot stick length reduces field joints in straight runs, improving overall system integrity and reducing labor time during installation.
Designed as an OEM-style replacement and new-installation copper tube for plumbing supply, mechanical, and DWV applications requiring Type L copper conforming to ASTM B88 and NSF 61 standards.
Installation of copper tube should be performed by a licensed plumber in accordance with the applicable plumbing code, such as the IPC or local amendments. Shut off the water supply and depressurize the line before cutting or soldering. Use a properly sized tube cutter and deburring tool to prepare cut ends before applying flux and solder or press fittings. Avoid over-heating joints, and allow solder joints to cool fully before restoring water pressure.
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