Merit Brass K611H-06 Half Coupling 3/8 in 316 Ss Fnpt

Product Description

The MERIT BRASS K611H-06 is a 3/8 inch pipe half coupling designed for threaded pipe connections in demanding fluid and gas handling systems. Constructed from 316 stainless steel, it offers strong resistance to corrosion, oxidation, and chloride environments. The female NPT (FNPT) end connects directly to standard threaded pipe, providing a secure, leak-resistant joint rated to 150 psi. This fitting is commonly installed by licensed plumbers and pipefitters working on process piping, marine, chemical, or industrial systems where material integrity is a critical requirement.

The K611H-06 half coupling is suited for residential and commercial applications where a branch outlet or pipe end connection is needed on a 3/8 inch line. Its ISO-compliant construction makes it appropriate for systems requiring internationally recognized standards. Typical install scenarios include hydronic systems, compressed air lines, and process fluid piping where a weld-end or socket alternative is not preferred and a threaded connection is specified.

Key Features

• 316 stainless steel construction for corrosion resistance in harsh and wet environments
• FNPT threaded end connection for straightforward installation on standard NPT pipe
• 150 psi pressure rating suitable for low-to-moderate pressure service
• ISO-compliant fitting for use in applications requiring international standards compliance
• Half coupling design allows branch or end connections without a full coupling

Compatibility

Designed as an OEM-style threaded fitting for use with 3/8 inch NPT pipe in plumbing, process, and industrial piping systems requiring 316 stainless steel construction.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter following applicable IPC or local mechanical code requirements. Shut off and depressurize the system completely before threading or removing any fittings. Use appropriate thread sealant or PTFE tape rated for the service medium on all NPT connections. Do not overtighten threaded stainless steel fittings, as galling can damage the threads and compromise the seal.