Hailiang HLGPEX-101-0107 Brass Pex Mpt Adapter 3/4x1/2

Product Description

The HAILIANG HLGPEX-101-0107 is a lead-free brass insert adapter designed to connect 3/4-inch PEX tubing to a 1/2-inch male pipe thread (MPT) fitting. The insert end slides into PEX tubing and is secured with a crimp ring or clamp, while the threaded end mates with a standard 1/2-inch NPT female port. Constructed from lead-free brass, this adapter meets federal and state requirements for use in potable water systems. Plumbers and pipefitters install this type of fitting during new construction and retrofit plumbing work where PEX supply lines transition to threaded metal valves, shutoffs, or fixtures.

This adapter is suited for residential and light commercial plumbing applications where 3/4-inch PEX distribution lines need to terminate or transition at a 1/2-inch threaded connection point. Common install scenarios include water supply runs feeding fixture shutoff valves, manifold branch transitions, and connection to threaded boiler or water heater ports. The fitting is compatible with both PEX-A, PEX-B, and PEX-C tubing when used with the correct crimp or clamp tool and ring size.

Key Features

• Lead-free brass construction meets Safe Drinking Water Act compliance requirements for potable water contact
• 3/4-inch PEX insert end accepts standard crimp rings or stainless clamp rings
• 1/2-inch MPT threaded end connects to standard NPT female ports on valves and fixtures
• Barbed insert design provides a secure mechanical grip inside PEX tubing
• Suitable for hot and cold potable water service

Compatibility

Designed as an OEM-style replacement and standard-use insert adapter for residential and light commercial PEX plumbing systems requiring a 3/4-inch PEX to 1/2-inch male pipe thread transition.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters. Shut off the water supply and depressurize the line before making any connections. Use a calibrated PEX crimp or clamp tool sized for 3/4-inch fittings to secure the insert end; hand-tightening alone is not sufficient. Apply thread sealant tape or approved pipe thread compound to the MPT threads before connecting to the female port, and verify all joints for leaks after restoring water pressure.

Technical Specifications

• PEX End Size: 3/4 inches
• MPT End Size: 1/2 inches
• Connection Type: PEX Insert x Male Pipe Thread (MPT/NPT)
• Material: Lead-Free Brass

Standard Information

• Brand: HAILIANG
• Manufacturer Part Number: HLGPEX-101-0107