Value Collection B342 100 Black Threaded Union 4 Inches

Product Description

The VALUE COLLECTION B342 100 is a 4-inch threaded union fitting constructed from malleable iron with a black finish. Unions allow piping systems to be disconnected and reconnected without disturbing adjacent sections of pipe, making them essential for service access points in gas and liquid distribution lines. This fitting carries a Class 150 designation and is rated to 300 psi for both liquid and gas service. It meets a broad set of industry standards including EN 10242, FM Approved, GB/T 3287, GB/T 7306.2, GB/T 7307, ISO 228, ISO 7/1, and is cULus Listed, supporting use in a wide range of commercial and industrial piping applications.

This union is suited for installation in commercial plumbing, mechanical piping, gas distribution, and fire protection systems where a threaded, separable connection is required. The 4-inch size addresses larger-diameter branch and main line connections typical in commercial mechanical rooms, industrial process piping, and building service gas lines. Its black malleable iron construction and Class 150 rating make it appropriate for both above-ground and accessible interior installations handled by licensed plumbers and pipefitters.

Key Features

• 4-inch threaded end connections for standard NPT pipe assembly
• Malleable iron construction with black finish for durability in gas and liquid service
• 300 psi pressure rating suitable for demanding commercial and industrial piping
• Class 150 designation meets widely recognized fitting classification requirements
• Certified to EN 10242, FM, GB/T 3287, GB/T 7306.2, GB/T 7307, ISO 228, ISO 7/1, and cULus standards
• Single-piece packaging with no minimum order above one unit

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 4-inch threaded malleable iron piping systems in commercial plumbing, mechanical, and gas distribution applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the International Plumbing Code (IPC) or International Fuel Gas Code (IFGC). Shut off all fluid or gas supply and depressurize the line completely before disassembly or fitting installation. Use appropriate thread sealant or PTFE tape rated for the service medium when making up threaded connections. Do not over-tighten threaded joints; follow standard trade practice for the pipe size and material to avoid cracking the fitting.