B K Mueller 511-707HN 1-1/2 in Galvanized Union

Product Description

The B K Mueller 511-707HN is a 1-1/2-inch galvanized union fitting constructed with brass and iron components. Unions allow a section of pipe to be disconnected and reconnected without rotating the pipe itself, making them essential for serviceability in water and gas distribution systems. This fitting ships in a package of 5 units and carries a combined package weight of 7.9 pounds. It is suited for threaded iron pipe installations where a removable, leak-tight joint is required at a service point or connection to equipment.

This galvanized union is used in residential and light commercial plumbing and mechanical systems. Typical applications include water supply lines, heating system piping, and general iron pipe distribution where a breakaway coupling is needed for future maintenance or equipment removal. The galvanized finish provides corrosion resistance for exposed or semi-exposed installations. Licensed plumbers and pipefitters are the primary installers of this fitting type.

Key Features

• 1-1/2-inch nominal pipe size for standard iron pipe thread connections
• Galvanized finish for corrosion resistance in wet or humid environments
• Brass and iron construction for durable, serviceability-focused design
• Union design allows pipe disconnection without rotating adjacent pipe sections
• Sold in a package quantity of 5 units

Compatibility

Designed as an OEM-style replacement and standard fitting for 1-1/2-inch threaded iron pipe systems in residential and commercial plumbing and mechanical piping applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off and depressurize the water or gas supply before removing or installing any union fitting. Apply appropriate thread sealant or PTFE tape to all male threads before assembly. Do not overtighten the union nut, as this can damage the brass seat and cause leaks.