Merit Brass X116-04 Brass Pipe End Cap 1/4 in Fnpt Class 125

Product Description

The MERIT BRASS X116-04 is a threaded brass pipe end cap designed to close off the terminal end of a 1/4 inch female NPT pipe fitting. Rated at Class 125 (125 psi), it provides a reliable, pressure-rated termination point in low-to-moderate pressure piping systems. The cap threads directly onto an exposed male NPT pipe end, sealing the line without the need for additional fittings or adapters. Plumbers and pipefitters install this cap during rough-in work, system testing, or when capping unused branch lines. Its all-brass construction resists corrosion and holds up in both wet and dry service environments.

This end cap is suited for residential and light commercial plumbing, HVAC piping, compressed air distribution, and general-purpose threaded pipe systems where a 1/4 inch FNPT termination is required. It is commonly installed on branch tees, test ports, and temporary or permanent cap-off points in copper and brass piping assemblies. The compact size makes it easy to install in tight spaces typical of mechanical rooms and equipment cabinets.

Key Features

• 1/4 inch FNPT threaded connection for standard NPT pipe compatibility
• Class 125 pressure rating at 125 psi for low-to-moderate pressure service
• All-brass construction for corrosion resistance in wet plumbing and HVAC applications
• Compact end cap profile seats flush against the pipe end for clean termination
• Threaded installation requires no special tools beyond a pipe wrench or pliers

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1/4 inch male NPT threaded pipe ends in Class 125 brass pipe systems.

Installation Notes

Installation is performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and IPC guidelines. Shut off and depressurize the affected pipe section before installation. Apply thread sealant tape or pipe compound to the male NPT threads before threading on the cap to ensure a leak-free seal. Tighten to hand-tight plus wrench turns appropriate for brass fittings — avoid overtightening, which can crack the fitting body.