Midland Industries 17187P 3/8 Compression X 1/8 Mip Adapter

Product Description

The MIDLAND INDUSTRIES 17187P is a male connector adapter designed to transition between a 3/8 inch compression fitting and a 1/8 inch male iron pipe (MIP) thread. Molded from polypropylene, this fitting is suited for low-pressure fluid and air distribution lines where a lightweight, corrosion-resistant plastic fitting is appropriate. It is a single-piece compression-to-threaded adapter used by plumbers, HVAC technicians, and mechanical contractors when joining compression tubing runs to threaded pipe or equipment ports. The compact design keeps installation straightforward in tight spaces and panel-mount applications.

This adapter is used in residential and light commercial plumbing, HVAC auxiliary drainage, refrigeration drain lines, and pneumatic control tubing systems. The compression end accepts standard 3/8 inch OD tubing, while the 1/8 inch MIP thread connects to corresponding female-threaded ports on valves, sensors, or equipment manifolds. It is appropriate wherever a polypropylene plastic fitting meets pressure and chemical compatibility requirements for the application.

Key Features

• Transitions 3/8 inch compression tubing to 1/8 inch MIP threaded connections in a single fitting
• Polypropylene construction resists corrosion and is compatible with a wide range of non-aggressive fluids
• Lightweight at 0.02 pounds, reducing load on delicate tubing and panel assemblies
• Male connector configuration for direct thread-in installation to female-ported equipment
• No-solder, no-flame installation via compression sleeve and nut on the tubing end

Compatibility

Designed as an OEM-style plastic compression fitting for use with standard 3/8 inch OD tubing and 1/8 inch female NPT-threaded ports in residential and light commercial plumbing and HVAC applications.

Installation Notes

Installation is performed by plumbers or HVAC technicians. Shut off the water supply or depressurize the line before making or breaking any compression connection. Ensure the tubing end is cut cleanly and squarely before seating it into the compression fitting. Do not overtighten the compression nut, as polypropylene threads and ferrule seats can crack under excessive torque. Apply thread sealant tape to the MIP threads per local plumbing code requirements before threading into the receiving port.