B K Mueller 511-202HN 3/8 in Galvanized Coupling with Stop

Product Description

The B K Mueller Industries 511-202HN is a 3/8 inch galvanized steel coupling with an integrated stop, used in threaded pipe assemblies for water supply and general plumbing applications. The internal stop prevents the pipe from passing through, ensuring consistent make-up depth and alignment during assembly. This fitting is a standard threaded coupling suited for low-pressure water lines in residential and light commercial plumbing systems. Licensed plumbers and pipefitters install this type of fitting when joining two sections of threaded galvanized pipe. The galvanized coating provides corrosion resistance for use in moist or outdoor environments.

This coupling is used in residential and light commercial plumbing installations where 3/8 inch galvanized threaded pipe is specified. Typical applications include water supply branch lines, utility piping, and repair or replacement of existing galvanized pipe runs. The stop feature makes it particularly useful in situations where consistent joint depth is needed without additional measuring during assembly. Sold in a package of 10 units, this fitting is practical for service contractors and installers working on multiple connections at once.

Key Features

• Integrated internal stop for consistent pipe make-up depth
• 3/8 inch nominal pipe size, threaded connection
• Galvanized finish for corrosion resistance in moist environments
• Package of 10 units for multi-connection jobs
• Standard threaded coupling profile for use with common pipe dies and wrenches

Compatibility

Designed as an OEM-style replacement or standard-use fitting for 3/8 inch threaded galvanized pipe systems in residential and light commercial plumbing applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the IPC. Shut off and depressurize the water supply line before removing or installing any threaded fittings. Apply appropriate thread sealant tape or compound to male threads before assembly. Use a properly sized pipe wrench and avoid over-tightening, which can crack or distort the fitting.