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The MUELLER STREAMLINE press-pf01263 is a 1-inch copper press female adapter with a press-by-female-pipe-thread (PxFPT) end configuration. This fitting connects a copper press system to a female-threaded pipe connection without soldering, making it a fast and reliable choice for plumbers working on residential and light commercial water distribution systems. The press end uses a standard press-fit connection method, while the female threaded end accepts male-threaded pipe fittings. Licensed plumbers and pipefitters install this adapter where a press-system transition to threaded pipe is required.
This adapter is suited for residential and commercial plumbing applications where copper press technology is used in place of traditional solder joints. It is typically installed in water supply lines, hydronic heating systems, and other closed-loop piping systems. The PxFPT configuration makes it a practical transition fitting when connecting press-fit copper runs to threaded valves, fixtures, or equipment.
Designed as an OEM-style replacement and standard-use fitting for 1-inch copper press piping systems using PxFPT transition connections.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the water supply and depressurize the line before installation. Use a manufacturer-approved press tool and jaw set rated for 1-inch copper press fittings to ensure a proper seal. Inspect the pipe end for burrs or debris and clean thoroughly before pressing.
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