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The MUELLER INDUSTRIES CP01187 is a carbon steel adapter fitting that transitions between a press-style end connection and a male NPT threaded connection. Sized at 2 inches by 2 inches, it is designed for integration into piping systems where a press-to-threaded connection is required. Rated to 200 psi maximum operating pressure and tested across a temperature range of -40 degrees F to 250 degrees F, this adapter suits demanding mechanical and plumbing applications. Licensed plumbers and pipefitters install this fitting as part of press-fit piping assemblies in commercial and industrial piping infrastructure.
This adapter is suited for use in hydronic heating, chilled water, and general plumbing piping systems where a press fitting must transition to a male NPT threaded component such as a valve, pump connection, or equipment port. The 2-inch size targets medium-diameter piping runs typical in commercial mechanical rooms and light industrial installations. Its carbon steel construction provides strength and durability in applications where copper or plastic fittings are not specified or permitted.
Designed as an OEM-style replacement and installation fitting for 2-inch press-fit carbon steel piping systems transitioning to male NPT threaded connections.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and ASME B31.9 or similar standards. Shut off and depressurize the piping system and allow it to cool before beginning work. The press end requires a compatible press tool and jaw set rated for the fitting size and material. Verify thread engagement on the MNPT end is sufficient and apply appropriate thread sealant or tape per job specifications before pressurizing the system.
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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