Midland Industries 77398 Copper Sweat Adapter 3/8 C X 3/8 Mpt

Product Description

The MIDLAND INDUSTRIES 77398 is a wrot copper male pipe adapter designed to transition between a 3/8 inch copper sweat (C) connection and a 3/8 inch male pipe thread (MPT) connection. Wrot copper construction provides reliable pressure handling up to 500 psi and a temperature range of 32 to 200 degrees F. This fitting is used by plumbers and HVAC technicians to join copper tubing systems to threaded pipe assemblies in a single, compact adapter. It weighs approximately 0.06 pounds and installs with standard sweat soldering techniques on the copper end and thread engagement on the male pipe end.

This adapter is suited for residential and light commercial plumbing and HVAC applications where copper sweat tubing must connect to a threaded pipe fitting or valve. Typical scenarios include connecting copper supply lines to threaded valves, manifolds, or equipment ports. The 3/8 inch size is common in domestic water supply, hydronic heating distribution, and refrigeration-adjacent plumbing runs where a reliable sweat-to-threaded transition is required.

Key Features

• Wrot copper construction rated to 500 psi working pressure
• Operating temperature range of 32 to 200 degrees F
• 3/8 inch C (copper sweat) inlet for soldered connection to copper tubing
• 3/8 inch MPT (male pipe thread) outlet for engagement with threaded fittings or valves
• Compact, lightweight design at 0.06 pounds

Compatibility

Designed as an OEM-style copper sweat male pipe adapter for use in residential and light commercial plumbing and HVAC systems requiring a 3/8 inch C to 3/8 inch MPT transition fitting.

Installation Notes

Installation of this fitting should be performed by a licensed plumber or qualified HVAC technician in accordance with applicable local plumbing codes and the IPC. Shut off and drain the water or fluid supply before soldering the sweat end; apply flux and heat evenly to achieve a full, leak-free solder joint. Thread the MPT end into the receiving female threaded fitting using appropriate thread sealant or PTFE tape. Do not exceed the rated 500 psi working pressure or the 200 degrees F maximum temperature limit for this fitting.