Nibco B350400 Cast Copper Bulkhead Fitting 1 in C X C

Product Description

The NIBCO B350400 is a cast copper bulkhead fitting designed to create a secure, pressure-rated pass-through connection at a tank wall, partition, or panel. With a 1-inch C x C (copper-to-copper sweat) end connection, it joins copper tubing on both sides of a barrier while maintaining a watertight seal under pressure. This fitting is manufactured from cast copper and meets ASTM B584 and ISO standards. It is sized at 1 inch and suits pressure fitting applications where a clean, reliable bulkhead penetration is required in plumbing and mechanical systems.

This bulkhead fitting is used in residential and light commercial plumbing installations where copper tubing must pass through a tank wall, storage vessel, or structural panel. Typical applications include water treatment equipment, storage tank connections, and mechanical room plumbing assemblies. The C x C sweat connection style is standard for copper systems and integrates directly with 1-inch copper tubing runs without adapters. Licensed plumbers and pipefitters install this fitting as part of pressure-rated copper distribution and equipment connection work.

Key Features

• Cast copper construction meets ASTM B584 and ISO standards for pressure fitting service
• 1-inch C x C end connections for direct sweat-soldered integration with copper tubing
• Bulkhead style allows secure through-wall or through-panel installation
• Pressure fitting rated for use in pressurized plumbing and mechanical systems
• Single-piece cast construction for consistent wall thickness and joint integrity

Compatibility

Designed as an OEM-style pressure bulkhead fitting for 1-inch copper tubing systems using sweat-soldered C x C connections in residential and commercial plumbing applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable IPC or local plumbing code requirements. Shut off and depressurize the system and drain all fluid before cutting into any existing copper line. Clean and flux all mating copper surfaces thoroughly before soldering to ensure a full, void-free joint. Allow the fitting and tubing to cool completely before restoring system pressure and checking for leaks.