Merit Brass K416-04 Pipe End Cap 1/4 in 304 Ss Fnpt

Product Description

The MERIT BRASS K416-04 is a female NPT threaded pipe end cap machined from 304 stainless steel. It terminates open pipe ends in fluid and gas piping systems, blocking flow and sealing the line against pressure loss or contamination. Rated to 150 psi and conforming to ISO standards, this cap is suited for plumbing, industrial process, and mechanical piping applications where corrosion resistance and reliable sealing are required. Installation is performed by licensed plumbers and pipefitters working on threaded pipe assemblies.

This end cap is used to close off 1/4-inch threaded pipe ends in residential and commercial piping systems. Typical applications include capping unused branch outlets, sealing test ports, and closing pipe ends during pressure testing or system modifications. The FNPT connection threads directly onto male NPT pipe without additional fittings or adapters, making it a straightforward field installation on standard threaded pipe systems.

Key Features

• 304 stainless steel construction for corrosion resistance in wet and chemical-exposure environments
• Female NPT (FNPT) threaded connection for direct installation on male NPT pipe ends
• 150 psi pressure rating suitable for a wide range of low-to-moderate pressure piping applications
• ISO standard compliance for dimensional consistency with compatible threaded fittings
• Compact, low-profile cap design for use in tight piping configurations

Compatibility

Designed as an OEM-style replacement and general-use end cap for 1/4-inch female NPT threaded pipe systems conforming to standard NPT thread dimensions.

Installation Notes

Installation is performed by a licensed plumber or pipefitter using a pipe wrench or strap wrench with appropriate thread sealant tape or compound applied to the male NPT threads. Shut off and depressurize the piping system completely before removing or installing any threaded end caps. Do not overtighten stainless steel fittings, as galling can occur on SS threads. All threaded pipe work should comply with applicable IPC and local plumbing code requirements.