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The MUELLER INDUSTRIES lh10020 is a Type L copper pipe used in residential and commercial plumbing supply systems. Measuring 1 inch inside diameter and 20 feet in length, this straight copper tube is rated for pressures up to 247 psi and temperatures from 150 degrees F to 400 degrees F. The 0.050-inch wall thickness meets Type L specifications, which position this pipe between the thinner Type M and heavier Type K in terms of wall gauge. Solder-end connections make it compatible with standard sweat-fit fittings. Manufactured in the USA and TAA/BAA compliant, this pipe is a dependable choice for licensed plumbers working on new construction and retrofit projects.
Type L copper pipe is widely used in potable water supply lines, hydronic heating systems, and general plumbing distribution in both residential and light commercial applications. The 20-foot straight length suits main supply runs, branch lines, and in-wall or under-slab installations. Each piece is marked and color-coded for Type L identification, helping installers confirm pipe type at a glance during inspection and rough-in. With a 1-inch inside diameter, this size handles moderate-to-high flow demand zones such as main trunk lines and riser sections.
Designed as an OEM-style straight-length copper pipe for use with standard 1-inch solder-end copper fittings in plumbing supply and hydronic heating systems. Compatible with sweat, press, and push-to-connect fittings sized for 1-inch Type L copper tube where connection type permits.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and depressurize the system before cutting or joining pipe. Use a pipe cutter appropriate for copper tube, deburr cut ends, and clean mating surfaces before applying flux and soldering. Do not exceed the rated maximum working pressure of 247 psi or the maximum working temperature of 400 degrees F.
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