Bk Mueller 511-353HN Reducing Coupling 1x0.5 in Threaded

Product Description

The BK MUELLER 511-353HN is a malleable iron reducing coupling designed to join pipe sections of two different diameters in threaded piping systems. Rated at 300 psi for liquid and gas service and 150 psi for steam, this Class 150 fitting is built for demanding mechanical and plumbing applications. The galvanized finish provides corrosion resistance in both wet and dry environments. Plumbers, pipefitters, and mechanical contractors install this coupling when reducing from a 1-inch line to a 1/2-inch branch or downstream run.

This reducing coupling is suited for residential and light commercial piping systems carrying water, gas, air, or steam within the stated pressure ratings. The threaded end connections allow installation without specialized tools, making it a practical choice for new construction, retrofits, and repair work wherever a straight-run pipe reduction is needed. It conforms to Class 150 malleable iron fitting standards used throughout the plumbing and mechanical trades.

Key Features

• Reduces from 1-inch to 1/2-inch pipe in a single threaded fitting
• 300 psi liquid and gas pressure rating for reliable service under load
• 150 psi steam pressure rating for steam distribution applications
• Malleable iron construction for strength and durability in threaded systems
• Galvanized finish provides added corrosion resistance
• Class 150 rating consistent with standard malleable iron fitting specifications

Compatibility

Designed as an OEM-style replacement or new-installation fitting for Class 150 threaded malleable iron pipe systems using standard NPT connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local mechanical and plumbing codes. Shut off and depressurize the line completely before removing or installing any threaded fittings. Apply an appropriate pipe thread sealant or PTFE tape to all male threads before assembly. Do not overtighten threaded connections, as malleable iron fittings can crack under excessive torque.