Compression fitting Detal-met MGW20X1/2 – PP female thread 20 mm x 1/2"

Detal-met MGW20X1/2 is a polypropylene (PP) compression fitting with a female threaded connection sized 20 mm to 1/2". It is designed to join 20 mm plastic pipes to 1/2" threaded fixtures, offering a lightweight and corrosion-resistant connector suitable for potable water supply and heating systems. The fitting is intended for installation, repair, or extension of pipeline runs where a secure transition from a plastic pipe to a threaded component is required.

Advantages

The fitting combines a compression seal with a female thread, enabling a watertight joint without soldering or adhesive. Made from polypropylene, it resists chemical corrosion and scaling while remaining lightweight. The design simplifies installation on plastic pipes and provides reliable mechanical retention under standard domestic water pressures. The female threaded outlet accepts common 1/2" threaded components, allowing compatibility with valves, faucets, and adapters.

Suitable for

• Connecting 20 mm plastic water pipes to 1/2" threaded valves and fixtures
• Domestic cold and hot water distribution systems
• Repairing or extending existing pipeline sections with threaded components
• Applications where a corrosion-resistant, non-metallic connector is preferred

Key specifications

• Material: polypropylene (PP)
• Connection type: compression on 20 mm pipe
• Thread type: female 1/2"
• Application: water supply and heating systems
• Suitable pipe outer diameter: 20 mm
• Corrosion resistance: high (non-metallic construction)

How to use

Cut the 20 mm plastic pipe squarely and deburr the end. Slide the compression nut and sealing components onto the pipe, insert the pipe fully into the fitting body, and tighten the compression nut by hand or with a wrench until a firm, leak-free connection is achieved. Thread the 1/2" female end onto the matching male threaded component using appropriate thread sealant or tape if required by the installation standards. Follow local plumbing codes and test the assembled connection under working pressure to confirm there are no leaks.

Usage recommendations

Use the fitting within the manufacturer’s recommended temperature and pressure limits for polypropylene fittings, avoid overtightening which can damage compression parts, and ensure compatibility of threaded components and sealing materials to maintain a reliable, long-lasting joint.