Plumbing Tigris K1 Press-Fit

Tigris K1 is a multilayer pipe system designed for potable water and heating applications. It is ideally suited for installation on commercial projects such as educational establishments, apartment blocks and hotels. The system comprises multilayer composite pipe and high quality polyphenyl sulphone (PPSU) fittings with a fixed stainless steel sleeve, in sizes 16mm, 20mm, 25mm, 32mm, 40mm, 50mm, 63mm, and 75mm. An extensive range of fittings, accessories and tools complements the system.

Press-fit Plumbing System

The versatile Tigris K1 Multilayer Press-fit System offers valuable advantages compared with traditional materials. Installation is faster and more straightforward. So time and cost can be saved.The system can be used for sanitary (including potable water) and heating applications. The fitting incorporates the Defined Leak Function (DFL) that brings extra safety by identifying unpressed fittings.


  • Wavin K1 meets the requirements for drinking water installation and radiator connection systems. 
  • It is therefore suitable for hot and cold water installations and for radiator connections in residential construction as well as in public and commercial buildings. 
  • Thanks to an extensive range of fittings with clever special solutions the system is optimally suited not only to new construction but also to renovations of old buildings. 

Special Advantages

The specific ways in which K1 improves on traditional, established techniques include: Very fast, heat-free secure jointing No need for Hot Works insurance Minimal fittings required: saving time and cost


The Wavin K1 system is subject to constant internal quality controls and continuous external monitoring. Wavin K1 system meets all requirements in accordance with EN ISO 21003 standards for service conditions class 2 and 5. The system has been tested by accredited test laboratories and carries a wide set of other national approvals as well.


Browse and download all our documents View all downloads

System Information

Long-term performance

All Tigris K1 components deliver long-term performance under the most demanding conditions and temperatures. They are certified by major European agencies including WRAS, KIWA and DVGW.


The aluminum layer in the pipes reduces thermal expansion, making them comparable to copper. The cross-linked PEXc inner layer makes the pipes flexible. This means fewer connectors, simplifying installation and reducing cost.

Simple, secure and versatile

Simple connectors and a range of dimensions from 16-63 mm make installation fast and efficient. Use Tigris K1 in all types of developments, including the most demanding environments such as hotels and hospitals.

Reliable connections

Tigris K1 connectors are made from high performance PPSU to resist corrosion and encrustation. Their patented sculptured nose gives a secure connection with minimal push-in force. If an installer forgets to press, connectors are designed to show immediate visible leakage during pressure testing.

What’s next?

Tigris K1 pipes and connectors are part of an extensive range of Wavin products for domestic and commercial environments. Explore Wavin’s selection of solutions for drinking and waste water, and for heating and cooling. Talk to Wavin about your specific needs and objectives.

Wavin uses cookies to improve your experience.