Midland Industries 700066-0804 Female Coupling Brass

Product Description

The MIDLAND INDUSTRIES 700066-0804 is a lead-free brass female coupling designed to connect 1/2-inch compression tubing to a 1/4-inch female NPTF threaded port. Built for plumbing and fluid-handling applications, this fitting transitions between two common connection standards in a single compact body. Thread sizing is 11/16-20 on the compression end and 1/4-18 on the NPTF end. The lead-free brass construction meets modern drinking water safety standards and holds up across a working temperature range of -40 to 250 degrees F. Licensed plumbers and pipe fitters install this type of fitting during new construction, retrofit, and repair work where a compression-to-pipe-thread transition is needed.

This coupling is suited for residential and light commercial plumbing systems where copper, aluminum, or plastic tubing terminates at a female NPTF port. Typical applications include water supply lines, refrigeration tubing connections, pneumatic systems, and other fluid or gas lines that require a reliable compression-to-pipe-thread joint. The compact dimensions make it practical in tight spaces such as under-sink installations, appliance connections, and panel penetrations where a low-profile fitting is an asset.

Key Features

• Lead-free brass construction complies with current safe drinking water requirements
• 1/2-inch compression inlet accepts copper, aluminum, or plastic tubing
• 1/4-inch female NPTF outlet provides a pressure-tight pipe-thread connection
• Rated for -40 to 250 degrees F, suitable for both cold and hot fluid service
• Thread specification 11/16-20 x 1/4-18 for precise, leak-resistant engagement
• Compact body at 1.2 inches length for use in confined installation areas

Compatibility

Designed for use with copper, aluminum, or plastic tubing on the compression side and any standard 1/4-inch female NPTF-threaded port on the outlet side. Consult system pressure and temperature ratings before installation.

Installation Notes

Installation of compression fittings should be performed by a licensed plumber or qualified pipe fitter in accordance with local plumbing codes and the IPC. Shut off the water supply and relieve system pressure before removing or installing any fitting. Do not overtighten the compression nut, as this can deform the ferrule and cause leaks. Inspect tubing ends for burrs or irregularities and cut cleanly before seating the compression sleeve.