VIEGA transitional coupling FKM 22 x 3/4" — plumbing connector 22 mm to 3/4"

VIEGA transitional coupling FKM 22 x 3/4" is a plumbing connector engineered to join a 22 mm pipe to a 3/4" threaded fitting. The fitting uses an FKM (fluoroelastomer) sealing element that offers resistance to a wide range of chemicals and elevated temperatures, making it suitable for potable and technical water systems. The connector provides a compact transition between metric pipework and imperial threaded components in repair, maintenance and retrofit situations.

Advantages

The FKM sealing material ensures long-term resistance to aggressive media and thermal stress, helping to maintain leak-tight connections under varying conditions. The coupling’s design enables a secure mechanical connection between a 22 mm tube and a 3/4" threaded fitting without additional adapters. Its compact form factor simplifies installation in confined spaces and reduces the number of separate parts needed for a reliable transition.

Suitable for

• Joining 22 mm copper, plastic or composite pipes to 3/4" threaded valves or fixtures
• Household plumbing repairs and replacements
• Commercial water installations and technical systems where mixed metric/imperial connections are required
• Retrofit projects converting metric pipework to imperial-threaded equipment

Key specifications

• Connection: 22 mm tube end to 3/4" male/female threaded fitting
• Sealing material: FKM (fluoroelastomer) for chemical and temperature resistance
• Application: potable water and technical water systems
• Design: compact transitional coupling for metric-to-imperial connection

How to use

Prepare the 22 mm pipe by cutting squarely and removing burrs, then insert the pipe into the coupling according to standard installation practice for the chosen pipe material. Thread the 3/4" fitting into the coupling and tighten to the torque recommended for the mating thread to ensure proper engagement without overloading the seal. Verify alignment and inspect the connection for leaks after pressurizing the system.

Usage recommendations

Use the coupling within the temperature and pressure ranges applicable to FKM seals and the connected piping system. Avoid exposure to media outside the chemical compatibility of FKM. Ensure threads are clean and undamaged before assembly and perform a pressure test after installation to confirm leak-tight performance.