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The NDL INDUSTRIES W1358 is a copper reducing bushing designed to connect two different pipe sizes within a copper plumbing or HVAC refrigerant piping system. It transitions from a 2.125-inch fitting (FTG) end to a 1.625-inch cup (C) end, allowing a technician to step down pipe diameter at a joint without additional adapters. The FTG x C configuration means the male fitting end slides into a standard cup fitting on one side, while the cup end receives standard copper tubing on the other. Licensed plumbers and HVAC technicians are the primary installers for this type of fitting.
This reducing bushing is suited for residential and light commercial plumbing and hydronic or refrigerant piping applications where a pipe size reduction is needed inline. The FTG x C connection style is common in sweat-solder assemblies, making this bushing a straightforward addition to any copper pipe rough-in or service repair involving a size transition from 2.125 inches to 1.625 inches. It is sold in a box quantity of 15, making it practical for contractors stocking for multiple jobs.
Designed as an OEM-style copper reducing bushing for use in standard sweat-solder copper piping assemblies requiring a transition from a 2.125-inch fitting connection to a 1.625-inch cup connection.
Installation should be performed by a licensed plumber or HVAC technician following applicable local plumbing codes and IFGC or IPC guidelines where relevant. Shut off the water supply or isolate the refrigerant circuit and relieve system pressure before beginning any work. Clean and flux all mating surfaces before soldering, and allow the joint to cool fully before restoring system pressure. Do not overtighten or force misaligned fittings, as copper is subject to deformation under excess mechanical stress.
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