Midland Industries 26187 Compression Male Adapter Brass

Product Description

The MIDLAND INDUSTRIES 26187 is a captive sleeve male adapter designed to transition from a 3/8-inch compression connection to a 1/8-inch male NPTF thread. Constructed from brass, this fitting provides reliable sealing in low-pressure fluid and gas line applications. The captive sleeve design retains the compression sleeve on the fitting body, reducing the chance of lost components during installation. At 0.05 pounds, it is a compact, lightweight fitting suited for tight spaces in residential and light commercial plumbing and instrumentation systems. Licensed plumbers and HVAC technicians commonly use this type of adapter when connecting copper or soft tubing runs to threaded ports on valves, gauges, or equipment panels.

This adapter is used wherever a compression tube line must terminate at a male NPTF threaded port. Common applications include instrument lines, control tubing, refrigeration sensing lines, and gas appliance connections where a 3/8-inch tube meets a 1/8-inch male NPTF port. The NPTF thread form provides a dry-seal mechanical connection that reduces reliance on thread sealant, making it appropriate for cleaner or more demanding service environments. This fitting is well suited to residential and light commercial installations handled by plumbing and HVAC tradespeople.

Key Features

• Captive sleeve design keeps the compression sleeve retained on the fitting body for easier handling during install
• 3/8-inch compression inlet accepts standard copper or soft tubing without soldering
• 1/8-inch male NPTF outlet provides a dry-seal threaded connection to female NPTF ports
• Brass construction offers corrosion resistance and compatibility with a wide range of fluids and gases
• Compact dimensions support use in confined spaces typical of equipment panels and control assemblies

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems requiring a 3/8-inch compression to 1/8-inch male NPTF transition in brass compression fitting assemblies.

Installation Notes

Installation is performed by licensed plumbers or qualified HVAC technicians following applicable IPC and IFGC guidelines. Shut off and depressurize the line before disassembly or fitting installation. Tighten the compression nut by hand first, then use a wrench to snug the connection - avoid overtightening brass compression fittings, as this can deform the sleeve or crack the fitting body. NPTF threads are designed for dry-seal assembly, but consult the applicable code or equipment manufacturer instructions regarding the use of thread sealant for the specific service fluid.