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The MERIT BRASS MB22510 is a 2.5-inch press-by-male-iron-pipe (MIP) adapter fitting designed to transition between press-connect copper or compatible tubing systems and male threaded pipe connections. This adapter is commonly installed in plumbing and hydronic systems where a quick, flame-free connection on one end meets a standard threaded fitting on the other. Licensed plumbers and pipefitters use this adapter when connecting press-system infrastructure to threaded valves, manifolds, or distribution headers. At 1.61 pounds, it is a solid, durable fitting suited for both residential and light commercial applications.
This adapter is used in press-connect plumbing installations where a transition to a male NPT threaded connection is required. Typical scenarios include connecting press-system pipe runs to threaded ball valves, pressure gauges, or service ports. The 2.5-inch size is most common in larger residential or commercial water distribution systems, boiler loops, and chilled water piping where press tooling is preferred over soldering or brazing.
Designed as an OEM-style replacement or new-installation fitting for 2.5-inch press-connect plumbing and hydronic piping systems requiring a male NPT threaded transition point.
Installation of this press fitting should be performed by a licensed plumber or pipefitter using a press tool compatible with the fitting size and jaw profile specified by the manufacturer. Always depressurize and drain the affected pipe section before pressing or threading. Threaded connections should be made using appropriate pipe thread sealant or PTFE tape in accordance with local plumbing codes and IPC guidelines. Do not use an open flame near press-connect fittings or sealing elements.
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