Merit Brass 3611HD-02 Pipe Half Coupling 1/8 in 316 Ss

Product Description

The MERIT BRASS 3611HD-02 is a 1/8 inch pipe half coupling rated for 3,000 psi, machined from 316/316L stainless steel. A half coupling is a short threaded fitting that connects a branch line to a pipe or vessel using a single female NPT (FNPT) threaded end. It is a standard component in high-pressure piping assemblies where corrosion resistance is critical. Plumbers, pipefitters, and mechanical contractors install this fitting in process, industrial, and utility piping systems. The 316/316L dual-grade material provides reliable performance in corrosive and chloride-prone environments.

This half coupling is suited for residential and commercial plumbing, industrial process lines, and fluid distribution systems where a 1/8 inch FNPT threaded branch connection is required. The 3,000 psi pressure rating supports high-pressure service applications. It is appropriate for use in steam, water, oil, and gas service lines that fall within the fitting's rated working pressure and temperature limits for 316/316L stainless steel.

Key Features

• 316/316L stainless steel construction for corrosion and chloride resistance
• 3,000 psi working pressure rating for high-pressure service
• 1/8 inch FNPT threaded end for standard pipe thread connections
• Half coupling design provides a single threaded branch outlet
• Threaded connection type allows tool-only installation without welding

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1/8 inch FNPT threaded piping systems requiring 316 or 316L stainless steel construction at 3,000 psi rated service.

Installation Notes

This fitting is installed by licensed plumbers or pipefitters in accordance with applicable plumbing and mechanical codes, including IPC and ASME B16.11 threading standards. Always depressurize and drain the piping system fully before removing or installing threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male threads mating with this FNPT fitting. Do not overtighten threaded connections, as this can crack or distort the fitting body.