Brass plumbing extension Perfexim 3/4" (GZ) x 20 mm (GW) 07-220-2020-000

Brass plumbing extension from Perfexim with a male 3/4" (GZ) threaded end and a 20 mm female push or solder connection (GW). This fitting is intended to extend or adapt existing pipework in domestic and commercial water supply systems where a threaded-to-smooth pipe transition is required. The solid brass construction offers corrosion resistance and consistent mechanical strength for standard potable water and heating installations.

Advantages

The brass construction ensures durability and resistance to corrosion in typical water environments. The combination of a 3/4" male thread and a 20 mm female connection allows reliable transitions between threaded components and smooth pipe runs. The compact form factor simplifies installation in confined spaces and provides stable mechanical support for connected fixtures or short pipe sections. The material and design reduce the need for frequent maintenance under normal operating conditions.

Suitable for

• Extending or adapting household water supply lines
• Connecting valves, taps and fixtures with a 3/4" threaded inlet
• Joining short sections of 20 mm copper or compatible plumbing pipe
• Small commercial plumbing repairs or modifications

Key specifications

• Material: brass
• Threaded end: male 3/4" (GZ)
• Smooth pipe connection: 20 mm (GW)
• Application: cold and hot water systems, heating circuits (where brass is suitable)
• Form factor: short extension fitting for threaded-to-smooth transition

How to use

Prepare the mating threaded component and the 20 mm pipe end by cleaning and deburring. If the 20 mm connection requires soldering, flux and solder the joint following standard plumbing practice; if it is a push-fit type, insert the pipe fully into the fitting until it seats. Tighten the 3/4" male thread into the matching female thread using an appropriate wrench, taking care not to overtighten and to use thread sealant or tape where required for a watertight joint. After installation, pressurize and inspect the connection for leaks and verify mechanical alignment with adjacent pipes and fixtures.

Usage recommendations

Check compatibility with pipe material (copper, PEX with insert, etc.) and the required joining method for the 20 mm end. Use appropriate sealing materials on the threaded connection and follow local plumbing codes for potable water or heating system installations. Avoid excessive torque on brass fittings and perform a pressure test after installation before covering or concealing the joint.