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The MUELLER STREAMLINE press-pf01131 is a 1/2-inch copper press male adapter designed to transition between press-fit copper tubing and male pipe thread (MPT) connections. The fitting uses a press-style connection on one end, eliminating open flame soldering, and terminates in a 1/2-inch male pipe thread on the other end. It is used in potable water, hydronic heating, and general plumbing distribution systems where a reliable, leak-tested mechanical joint is required. Licensed plumbers and pipefitters are the primary installers of this fitting type.
This adapter is suited for residential and light commercial plumbing applications where copper press tooling is already in use. The PxMPT configuration allows direct connection to threaded valves, fixtures, and equipment without soldering. It is commonly installed in tight spaces, occupied buildings, or wet environments where torch work is restricted or prohibited. The 1/2-inch size fits standard half-inch copper tubing and half-inch male pipe thread fittings.
Designed as an OEM-style press fitting for use with standard 1/2-inch copper press tooling systems in residential and commercial plumbing installations.
Installation requires a calibrated press tool with the appropriate 1/2-inch copper press jaw — do not attempt to seat the fitting by hand or with impact. Shut off and depressurize the water supply line before installation and verify the pipe end is clean, deburred, and inserted fully to the depth mark before pressing. Thread the MPT end into fittings using appropriate thread sealant or PTFE tape in accordance with IPC and local plumbing code requirements. Do not over-torque the threaded connection after pressing the copper end.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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