Nibco B345750 Cast Copper 45 Wye 1-1/2 in Cxcxc

Product Description

The NIBCO B345750 is a cast copper 45-degree wye fitting designed for use in copper pressure piping systems. It provides a 45-degree branch takeoff from a main run, allowing controlled directional changes or branch connections in supply and drain-adjacent pressure lines. The fitting uses a solder-cup end connection on all three ports (C x C x C), making it compatible with standard copper sweat joining methods. At 1.14 pounds, it is a solid, full-cast construction rather than a wrought fitting, which is suited for higher-stress connection points. Licensed plumbers and pipefitters are the primary installers for this type of pressure fitting.

This fitting is intended for residential and light commercial copper pressure piping applications where a 45-degree branch configuration is required. The 1-1/2-inch size is common in domestic water distribution, recirculation lines, and hydronic supply systems. The C x C x C end connection style requires all three ports to be soldered, making this a fixed, permanent joint fitting appropriate for in-wall, mechanical room, or exposed copper rough-in work. It is sold individually.

Key Features

• Cast copper construction meets ASTM B584 and ISO standards for pressure fittings
• 45-degree wye configuration allows branch takeoffs without sharp directional changes
• Three solder-cup (C x C x C) ports for standard sweat-joint installation
• 1-1/2-inch fitting size suits common residential and commercial branch line sizing
• Pressure fitting style rated for use in pressurized copper piping systems

Compatibility

Designed as an OEM-style pressure fitting for use with standard 1-1/2-inch copper tubing in sweat-joint pressure piping systems conforming to ASTM B584 and ISO fitting standards.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off and depressurize the water supply and allow all pipes to cool completely before cutting or fitting. Clean and flux all mating surfaces before applying heat; use appropriate lead-free solder for potable water systems. Do not apply heat directly to the fitting body for extended periods, as overheating cast copper fittings can compromise joint integrity.