Bk Mueller 511-202HP Malleable Iron Pipe Coupling 3/8 in

Product Description

The BK MUELLER 511-202HP is a malleable iron pipe coupling designed for joining threaded pipe sections in plumbing, mechanical, and industrial piping systems. This Class 150 galvanized coupling handles liquid and gas service at up to 300 psi and steam service at up to 150 psi. At 3/8 inch fitting size with threaded end connections, it is built for reliable, leak-resistant joints in a wide range of pipe assemblies. The galvanized finish provides corrosion resistance suitable for both indoor and outdoor installations. Licensed plumbers and pipefitters are the primary trade for this type of fitting.

This coupling is used in residential and commercial piping applications where a threaded inline connection is required. Typical installations include gas distribution lines, water supply systems, steam heating systems, and general mechanical piping. The 3/8 inch size is common in branch lines and smaller-diameter runs within these systems. The threaded end connections conform to standard NPT thread patterns used throughout the trade.

Key Features

• Malleable iron construction for strength and impact resistance in threaded piping systems
• Galvanized finish for corrosion protection in wet and outdoor environments
• 300 psi pressure rating for liquid and gas service
• 150 psi pressure rating for steam service
• Class 150 rated fitting with threaded end connections
• 3/8 inch fitting size suitable for smaller-diameter branch lines

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 3/8 inch NPT threaded pipe systems in plumbing, gas, and steam piping applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, IPC, and IFGC requirements. Shut off and depressurize the piping system fully before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to male threads before assembly. Do not overtighten, as malleable iron threads can crack under excessive torque.