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The VIEGA 44370 is a zero lead bronze transition coupling designed to connect 1-inch PEX crimp pipe to 1-inch press fittings in potable water and hydronic plumbing systems. Built under the Viega PureFlow product line, this fitting incorporates Smart Connect Technology, which allows installers to visually verify a complete press connection before the system is pressurized. At 0.15 pounds and compact in profile, it is a lightweight but durable fitting suited for tight mechanical rooms, under-slab transitions, and retrofit work. Licensed plumbers and pipefitters typically install this fitting during new construction or remodel projects where PEX crimp and press systems meet.
This coupling is used in residential and light commercial plumbing systems where a transition between PEX crimp tubing and a press-style connection is required. Common applications include potable water distribution, radiant heating supply and return lines, and manifold connections. The zero lead bronze construction meets requirements for contact with drinking water systems. It is well suited for installations where a tool change between crimp and press is necessary within the same rough-in run.
Designed as an OEM-style transition fitting for use within the Viega PureFlow PEX crimp and press system at 1-inch nominal pipe size.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off and depressurize the water supply before beginning work. Use the manufacturer-specified crimp ring and crimp tool for the PEX side, and a compatible press tool for the press side. Do not apply heat or solder to this fitting.
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