B K Mueller 511-943HN Galvanized Hex Bushing 3/4x1/2

Product Description

The B K Mueller Industries 511-943HN is a galvanized hex bushing used to reduce a 3/4-inch female pipe thread to a 1/2-inch male pipe thread. Hex bushings are a standard fitting in plumbing, HVAC piping, and light industrial applications where a threaded reduction is needed without adding a coupling or nipple to the run. The galvanized finish provides corrosion resistance suitable for gas, water, and air service. This bushing ships in a package quantity of 20 units, making it practical for contractors stocking a service van or parts room.

This fitting is suited for residential and light commercial plumbing and mechanical systems where threaded pipe connections require a reduction from 3/4-inch to 1/2-inch. Common install scenarios include gas piping manifolds, water distribution branch lines, compressed air systems, and HVAC hydronic piping. It is installed by licensed plumbers, pipefitters, and HVAC technicians working with schedule 40 or schedule 80 threaded pipe systems.

Key Features

• Galvanized finish for corrosion resistance in gas, water, and air service
• Hex body design allows wrench engagement for proper thread seating
• 3/4-inch female NPT inlet reduces to 1/2-inch male NPT outlet
• Sold in a package quantity of 20 units
• Standard bushing configuration eliminates need for additional fittings in a threaded reduction

Compatibility

Designed as an OEM-style threaded reduction fitting compatible with standard NPT threaded pipe systems in plumbing, HVAC, and light industrial piping applications.

Installation Notes

Installation is performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and IFGC requirements for gas service. Apply appropriate thread sealant or PTFE tape to male threads before assembly. Use a pipe wrench or hex wrench on the bushing body — do not grip the threads. Always de-pressurize and isolate the line before removing or installing threaded fittings.