B K/mueller Inds(import) 511-331HN Galvanized Reducing Coupling

Product Description

The B K/MUELLER INDS(IMPORT) 511-331HN is a galvanized steel reducing coupling designed to connect pipes of two different diameters in threaded piping systems. It provides a transition from a 1/2-inch pipe thread to a 1/4-inch pipe thread, allowing plumbers and pipefitters to reduce line size within a run without additional fittings. The galvanized finish provides corrosion resistance suited to water supply, light industrial, and general plumbing applications. Sold in a package quantity of 10, this coupling is a practical stocking item for service vans and job sites where reducing connections are frequently needed.

This reducing coupling is used in residential and light commercial plumbing systems wherever a threaded pipe run must step down from 1/2-inch to 1/4-inch. Common applications include supply line reductions, equipment connections, and compressed air distribution. The threaded design follows standard NPT fitting practice, making it straightforward to install with typical hand tools. Galvanized construction makes it appropriate for water and air service in dry or mildly corrosive environments.

Key Features

• Reduces from 1/2-inch female thread to 1/4-inch female thread in a single fitting
• Galvanized steel construction for corrosion resistance in water and air service
• Standard NPT threaded ends for compatibility with common threaded pipe and fittings
• Packaged in quantities of 10 for efficient stocking and job-site use

Compatibility

Designed as an OEM-style replacement or standard-stock reducing coupling for threaded galvanized piping systems using NPT connections.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable local plumbing codes and IPC requirements. Shut off and depressurize the supply line before removing or installing any threaded fitting. Apply an appropriate thread sealant or PTFE tape to male threads before making up the joint. Do not overtighten; use a pipe wrench with proper jaw engagement to avoid cracking the fitting body.