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The MIDLAND INDUSTRIES 20057 is a brass male adapter fitting designed to transition a 3/8-inch push-to-connect (PTC) connection to a 1/8-inch male NPT threaded port. It allows a technician to quickly join a push-fit tubing line to a threaded fitting or port without soldering or flaring. The fitting spans 1.1 inches in length with a 0.56-inch hex for wrench engagement. Rated for temperatures from -10 to 200 degrees F, it suits compressed air, pneumatic control, and light fluid service lines in HVAC, plumbing, and industrial applications. Brass construction offers corrosion resistance and reliable sealing.
This adapter is suited for residential and light commercial installations where a technician needs to connect flexible push-fit tubing to an NPT-threaded port on a valve, manifold, sensor, or equipment body. Common applications include pneumatic control lines, compressed air distribution, and low-pressure fluid circuits. The 3/8-18 push-to-connect thread engagement mates with 3/8-inch OD tubing, and the 1/8-27 NPT male thread seals into standard 1/8-inch female NPT ports. It is installed by plumbers, HVAC technicians, and pipefitters.
Designed as an OEM-style replacement or new-installation fitting for systems using 3/8-inch OD push-to-connect tubing and 1/8-inch female NPT threaded ports in pneumatic, compressed air, or light fluid piping circuits.
Installation is performed by a licensed plumber, pipefitter, or HVAC technician. Depressurize and isolate the line before removing or installing any fitting. Apply thread sealant or PTFE tape to the male NPT threads in accordance with the applicable plumbing or mechanical code. Do not overtighten the NPT connection; use the hex flat for controlled wrench engagement only.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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