B K Mueller 511-354HN Galvanized Reducing Coupling

Product Description

The B K Mueller Industries 511-354HN is a galvanized steel reducing coupling designed to connect a 1-inch pipe to a 3/4-inch pipe in threaded piping systems. This fitting is used to reduce pipe diameter mid-run without the need for additional adapters or bushings. The galvanized finish provides corrosion resistance suitable for water supply, gas distribution, and general industrial piping applications. Licensed plumbers and pipefitters install this fitting in both new construction and retrofit work where a threaded, straight-run reduction is required. Each package contains 10 units, making it practical for service vans and job-site inventory.

This reducing coupling is appropriate for residential and light commercial plumbing, HVAC hydronic systems, and industrial piping where a 1-inch to 3/4-inch threaded reduction is needed. The galvanized carbon steel construction makes it well suited for above-ground water supply lines and general utility piping. It is not recommended for use in systems requiring non-ferrous fittings or where galvanized pipe is prohibited by local code. Plumbing contractors and pipefitters typically stock this fitting for routine service calls and planned installations.

Key Features

• Reduces from 1-inch to 3/4-inch in a single threaded fitting — no bushing required
• Galvanized steel construction resists corrosion in water supply and utility piping environments
• Threaded ends for standard NPT connections
• Packaged in quantities of 10 for efficient job-site and van stock management
• Straight inline reduction keeps piping runs clean and compact

Compatibility

Designed as an OEM-style replacement and standard-stock fitting for 1-inch to 3/4-inch NPT threaded galvanized steel piping systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable IPC and local plumbing codes. Shut off and depressurize the water or gas supply before making or breaking any threaded connections. Apply an approved thread sealant or PTFE tape to all male threads before assembly. Do not overtighten threaded connections, as this can crack fittings or strip threads.