Nibco 9003950PC Reducing Coupling 4x3 Inch Wrot Copper

Product Description

The NIBCO 9003950PC is a wrot copper reducing coupling in the NIBCO Press System PC600-R series. It connects a 4-inch nominal pipe to a 3-inch nominal pipe using a press end connection style, eliminating the need for open flame or soldering during installation. This fitting is manufactured domestically and is designed for licensed plumbers working on commercial and residential piping systems where a reliable, leak-free mechanical joint is required. The press end style allows for faster installation compared to sweat fittings, making it well suited for retrofit work and new construction alike.

This reducing coupling is used in copper piping systems where a transition between 4-inch and 3-inch nominal pipe diameters is needed. Typical applications include commercial plumbing, hydronic heating distribution, and domestic water supply systems. It is appropriate for installations where torch use is restricted or where speed of assembly is a priority, such as occupied buildings or tight mechanical rooms.

Key Features

• Wrot copper construction for high strength and corrosion resistance in water service
• Press end connection style eliminates open-flame soldering during installation
• 4 x 3 inch nominal reducing configuration for downsizing copper pipe runs
• Domestic manufacture in the PC600-R press fitting series
• Suitable for both commercial and residential copper piping applications

Compatibility

Designed as an OEM-style press fitting for use with standard 4-inch and 3-inch nominal copper pipe in press-type copper piping systems. Compatible press jaw tooling is required; consult the NIBCO Press System tool compatibility guide for approved pressing tools.

Installation Notes

Installation must be performed by a licensed plumber familiar with press-fit copper systems. Shut off and depressurize the water supply before installing or modifying any fitting. A compatible press jaw and pressing tool rated for the fitting size are required to achieve a proper seal. Do not use a torch or heat source on press fittings, as this will damage the internal sealing element.

Technical Specifications

• Nominal Size: 4 x 3 inches
• Connection Style: Press End
• Material: Wrot Copper
• Series: PC600-R
• Origin: Domestic

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: 9003950PC