Bk Mueller 511-405HP Malleable Iron End Cap 1 in Threaded

Product Description

The BK MUELLER 511-405HP is a malleable iron threaded pipe end cap rated for demanding plumbing and piping applications. Sized at 1 inch, this Class 150 fitting accepts a standard threaded pipe end and seals it completely, stopping flow at line terminations, test points, and capped branch outlets. The galvanized finish provides corrosion resistance for both indoor and outdoor installations. Rated at 300 psi for liquid and gas service and 150 psi for steam, it meets the pressure requirements of most commercial and industrial piping systems. Licensed plumbers and pipefitters install this fitting as part of standard threaded pipe assemblies.

This end cap is suited for use in residential and commercial gas and liquid piping systems where a threaded termination is needed. Typical applications include capping unused branch lines, isolating sections of pipe during pressure testing, and closing off service connections. The galvanized malleable iron construction handles both wet and dry service environments, making it appropriate for potable water, gas distribution, compressed air, and steam lines within the rated pressure limits.

Key Features

• 300 psi liquid and gas pressure rating for high-demand service
• 150 psi steam pressure rating suitable for low-pressure steam systems
• Threaded end connection for standard NPT pipe assembly
• Galvanized finish for corrosion resistance in wet and outdoor environments
• Class 150 malleable iron construction for durability and thread integrity
• 1 inch fitting size compatible with standard 1 inch threaded pipe

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 1 inch threaded malleable iron pipe systems operating within Class 150 pressure ratings.

Installation Notes

Installation is performed by a licensed plumber or pipefitter following applicable IPC and IFGC code requirements for the service type. Shut off and depressurize the line completely before threading the cap onto the pipe end. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly to ensure a leak-free connection. Do not exceed the rated pressure limits for the intended service medium.