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The MUELLER STREAMLINE ADP00066 is a wrot copper adapter fitting designed to make threaded connections in residential and commercial plumbing systems. With a 0.50-inch by 0.50-inch male pipe thread (MPT) configuration and an actual length of 1.19 inches, this fitting provides a reliable transition point in copper piping assemblies. Sold in a pack of 50, it suits contractors and service professionals who need consistent stock on the job site or in the shop. Wrot copper construction ensures solid performance in standard water service and mechanical piping applications.
This adapter is used in residential and light commercial plumbing installations wherever a male threaded copper connection is required. Common applications include water supply lines, HVAC hydronic systems, and mechanical rooms where copper piping terminates into threaded fittings. The pack-of-50 format makes it practical for plumbing contractors stocking service vans or supply rooms. Installation is typically performed by licensed plumbers working to IPC or local code requirements.
Designed as an OEM-style replacement and standard-use fitting compatible with 0.50-inch copper piping systems using male pipe thread connections.
Installation of copper adapters is typically performed by a licensed plumber. Shut off and depressurize the water supply before beginning work. When soldering, follow applicable flame and clearance requirements per local code. Use appropriate thread sealant or PTFE tape on MPT connections to ensure a leak-free joint.
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