Description

Firstly the Unidelta Universal transition coupling 15 x 22 x 25 is a compression fitting designed to connect metric polyethylene (PE) pipes to existing pipes made from different materials, such as copper, steel, PVC, and lead. It is a versatile fitting used in pressurized water distribution systems, both above and below ground, for repair, renovation, and new installations.

Features and specifications

• Pipe materials: One end of the coupling connects to metric PE pipe. The other, universal end can connect to existing pipes with outside diameters ranging from approximately 15 mm to 35 mm, depending on the specific model. It is compatible with a wide range of materials, including:
  • Copper
  • Galvanized iron
  • Stainless steel
  • Lead
  • PVC and U-PVC
  • Polypropylene (PP)
• Operating pressure and temperature: The fittings can handle pressures up to 16 bar (1600 kPa) for general applications and are only suitable for cold water. The maximum pressure is 16.0 PSI at 20°C.
• Materials: The fittings are made of high-quality, corrosion-resistant thermoplastic materials, with specific components including:
  • Nut: Polypropylene (PP-B) copolymer with UV protection
  • Body: Polypropylene (PP-B) copolymer with UV protection
  • Clamping ring: Polyacetal (POM)
  • Seal: Nitrile rubber (NBR) and Ethylene Propylene Diene Monomer (EDPM)
• Sizes: Unidelta Universal Transition Couplings are available in various sizes to accommodate different pipe diameters. The universal end can connect to pipes with an outside diameter between 15 mm and 35 mm, while the PE compression end is for pipes from 16 mm up to 110 mm.

How it works?

All in all universal transition coupling 15 x 22 x 25 works using a compression mechanism on both ends to create a perfect hydraulic seal. One side is designed for PE pipe, while the other side is a “universal” fitting that uses a clamping ring and gasket to securely grip the external diameter of a pipe of a different material. In conclusion this eliminates the need for multiple specialized fittings.

Installation overview:

1. Cut the pipe: Ensure the pipe is cut squarely and free of burrs and imperfections.
2. Disassemble: Unscrew the blue nut on the compression end and place it and the clamping ring onto the PE pipe.
3. Insert pipe: Push the PE pipe and the universal pipe axially into the fitting until they touch the internal stop.
4. Hand-tighten: Screw the nut back on by hand.
5. Final tightening: Use a wrench to securely tighten the nut until it can no longer be tightened with reasonable force.

Applications

• Connecting dissimilar pipes: A quick and simple way to connect metric PE pipe to existing pipes made of copper, steel, PVC, lead, etc.
• Renovation and upgrades: Ideal for connecting new PE pipe to older existing pipe systems.
• Repair work: Used for pipe repairs and emergency situations by water companies and plumbers.
• Water distribution: Suitable for drinking water distribution systems under pressure.