B K Mueller 511-206HN Galvanized Coupling with Stop 1-1/4 in

Product Description

The B K Mueller Industries 511-206HN is a 1-1/4-inch galvanized steel coupling with an internal stop, designed for joining threaded pipe sections in potable water, gas, and general plumbing distribution systems. The internal stop centers both pipe ends at the mid-point of the coupling, ensuring consistent thread engagement on each side. The hot-dip galvanized finish provides corrosion resistance suited for exposed or damp installation environments. Licensed plumbers install this fitting in both residential and light commercial applications where a reliable, code-compliant threaded connection is required.

This coupling is used in 1-1/4-inch threaded galvanized or black iron pipe systems. Typical applications include water supply mains, gas distribution piping, fire suppression branch lines, and general mechanical piping where a coupling with a built-in center stop is preferred over a full-length coupling. It is sold in a package quantity of 5 units, making it practical for service vans and repair stock.

Key Features

• Internal stop centers pipe ends for consistent thread engagement on both sides
• Galvanized finish for corrosion resistance in damp or exposed environments
• 1-1/4-inch nominal pipe size fits standard NPT threaded pipe
• Sold in a package quantity of 5 units
• Suitable for water, gas, and general mechanical piping applications

Compatibility

Designed as an OEM-style replacement fitting for 1-1/4-inch NPT threaded galvanized or black iron pipe systems in residential and light commercial plumbing and mechanical installations.

Installation Notes

Installation is performed by a licensed plumber in accordance with applicable IPC or local plumbing code requirements. Shut off and depressurize the pipe system fully before removing any existing fittings or threading new connections. Apply an approved thread sealant or PTFE tape to all male threads before making up the joint. Do not over-tighten threaded fittings, as this can crack the fitting or damage threads.