Brass/zinc crimped MultiSkin GW coupling Comap 20 x M22 half-union with O-ring 7359GOW2022

Brass/zinc crimped MultiSkin GW coupling by Comap is a 20 x M22 half-union with integrated O-ring designed to create a sealed mechanical connection in plumbing and heating systems. Constructed from brass and zinc, this coupling offers corrosion-resistant surfaces and a crimped design for reliable press-fit installation. The integrated O-ring ensures leak-tight performance at the joint and simplifies assembly where threaded or soldered connections are not desirable.

Advantages

The combination of brass and zinc materials provides a balance of corrosion resistance and mechanical strength suitable for potable water and heating circuits. The crimped MultiSkin construction enables a consistent press-fit connection that reduces installation time compared with soldering. An integrated elastomer O-ring offers immediate sealing without additional sealing compounds and compensates minor alignment variations during assembly. The half-union design allows straightforward connection to female M22 fittings while maintaining a compact footprint in confined spaces.

Suitable for

• Domestic and commercial plumbing repairs and installations
• Heating system pipe connections and radiator fittings
• Press-fit assembly where soldering or welding is impractical
• Applications requiring a corrosion-resistant, sealed joint

Key specifications

• Connection type: crimped half-union with M22 female interface
• Size: 20 mm nominal pipe dimension to M22 thread
• Materials: brass body with zinc components
• Sealing: integrated elastomer O-ring for leak-tight joint
• Installation method: press/crimp fitting suitable for MultiSkin systems

How to use

Prepare the pipe end by cutting square and deburring to ensure full insertion. Slide the MultiSkin sleeve or crimp ring over the pipe according to the system's assembly instructions, insert the prepared pipe into the coupling until it reaches the shoulder, and position the O-ring as required. Use the appropriate crimping tool or press jaws sized for 20 mm fittings to complete the mechanical connection, following the manufacturer's recommended force and pattern. After crimping, inspect the joint visually for correct deformation and test the system for leaks at working pressure before commissioning.

Usage recommendations

Use compatible press tools and jaws recommended for MultiSkin systems to ensure a reliable crimp. Verify O-ring condition before assembly and replace damaged seals. Avoid exposure to aggressive chemicals that may degrade elastomer seals and follow local plumbing codes for potable water and heating installations.