B K/mueller 511-406HN 1-1/4 in Galvanized Pipe Cap

Product Description

The B K/MUELLER INDS(IMPORT) 511-406HN is a 1-1/4 inch galvanized pipe cap used to terminate the end of a threaded pipe run. The cap threads onto male-threaded pipe to seal the line and prevent debris ingress, fluid leakage, or pressure loss. It is constructed with a galvanized finish to provide corrosion resistance in wet or outdoor environments. Plumbers and pipefitters install this fitting during new construction, system modifications, and maintenance work on threaded iron or steel pipe systems.

This galvanized cap is suited for residential and light commercial plumbing, gas distribution piping, and general pipe work where a threaded termination is required. It is commonly installed when capping off unused branch lines, completing pressure tests, or permanently closing a pipe end. The 1-1/4 inch size fits standard Schedule 40 threaded pipe of the same nominal diameter.

Key Features

• 1-1/4 inch nominal size for standard threaded pipe termination
• Galvanized finish for corrosion resistance in wet or outdoor environments
• Female-threaded interior mates with male NPT pipe ends
• Sold in a package quantity of 5 units

Compatibility

Designed as a standard threaded termination fitting for 1-1/4 inch nominal galvanized or black iron pipe systems using NPT threading.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC code requirements for the piping system type. Shut off and depressurize the pipe system fully before removing or installing any threaded fittings. Apply thread sealant tape or pipe dope to male threads before threading the cap on by hand, then tighten with a pipe wrench to a snug fit. Do not overtighten, as this can crack fittings or damage threads.