Brass-plastic threaded connector Detal-met MGZ20X1/2, 20 mm to 1/2" pipe thread

Detal-met MGZ20X1/2 is a brass-plastic threaded connector designed to join 20 mm plastic piping to a standard 1/2" threaded fitting. The fitting combines a polypropylene (PP) body with a metal threaded insert to provide compatibility between plastic pipe systems and metal valves, taps or fixtures. It is intended for use in domestic and light commercial water supply installations, plumbing repairs and retrofit work where a secure transition from 20 mm plastic pipe to a 1/2" thread is required.

Advantages

The hybrid brass-plastic construction offers corrosion resistance from the PP body alongside the mechanical strength and leak-resistant performance of a metal threaded connection. The connector provides a compact transition solution that simplifies joining dissimilar materials without the need for additional adapters. Its design supports straightforward installation and reliable sealing when used with appropriate thread sealant or tape.

Suitable for

• Connecting 20 mm plastic water pipes to 1/2" threaded valves, taps or fixtures
• Plumbing repairs and retrofit connections in residential properties
• Light commercial water supply installations where a plastic-to-metal transition is needed

Key specifications

• Connection type: press-fit or socket for 20 mm plastic pipe to 1/2" external threaded fitting
• Materials: polypropylene (PP) body with metal (brass) threaded insert
• Thread standard: 1/2" external pipe thread compatible with common plumbing fixtures
• Application: cold and hot water supply systems in residential and light commercial settings
• Design: compact transition fitting for joining dissimilar materials

How to use

Prepare the 20 mm plastic pipe by cutting it squarely and ensuring the end is free of burrs and debris. Insert the pipe into the PP side of the connector until it seats fully according to the pipe system's joining method (push-fit, adhesive, or heat fusion if applicable). Apply appropriate thread sealant or PTFE tape to the 1/2" male thread of the mating fixture, then screw the metal threaded end of the connector onto the fitting and tighten to a secure fit without over-torquing. After installation, test the joint under working pressure to confirm there are no leaks.

Usage recommendations

Use compatible installation methods for the 20 mm plastic pipe (push-fit, solvent welding or thermal fusion) as specified by the pipe manufacturer. Select an appropriate thread sealant or PTFE tape for potable water applications and avoid excessive mechanical stress or bending at the joint to maintain a reliable seal.