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Wavin Hep₂O - Key Push-Fit Pipe Fittings

Designed for fast, reliable installation, Wavin Hep₂O is an advanced push-fit plumbing system for hot and cold water and central heating applications. Featuring unique In4Sure® joint recognition, secure demounting with the HepKey, and a 50-year guarantee, Hep₂O provides a dependable, tamper-resistant connection every time. Flexible, easy to install, and compatible with both copper pipe and the Wavin Tigris press-fit system, Hep₂O is ideal for residential and commercial projects alike.

Wavin Hep₂O Push-Fit Plumbing System

Hep₂O Key includes unique features for quick and easy installation with a secure fitting. It is the only push-fit plumbing system with joint recognition, and secure demounting.

Key Features

Wavin 50 Year Guarantee Image for Hep2O push-fit plumbing products
50-Year Guarantee
Hep₂O key system comes with a 50-year guarantee against defect in materials or manufacturing.
Secure Reliable Connection
Get a secure reliable connection every time thanks to Wavin’s In4Sure joint recognition.
Hep Key plus group 2_L
Tamper-proof but Demountable
Fittings can be easily demounted with the HepKey preventing tampering or accidental demounting
Images used in the Tigris Technical Handbook (2025 version)
Versatility
Hep₂O Key is compatible with traditional copper pipe and the Wavin Tigris K5 press-fit system.
Wavin Hep2O Original Push-fit Keyless

Hep₂O and Copper Pipe

When compared to copper, the Hep₂O Key system:

  • Can be installed without a hotworks permit
  • Will not corrode no matter how soft or acidic the water is
  • Has no scrap value so has less chance of being stolen
  • Is cooler to the touch with less heat loss
  • Has less chance of a frost burst if pipe is frozen
  • Quiet in operation with no water hammering
  • Does not require painting
  • Ideal for first fix of radiators from behind stud walls

For maximum versatility Hep₂O Key is compatible with traditional copper pipe and the Wavin Tigris K5 press-fit system.

Why use Wavin Hep₂O for Larger Residential or Commercial Projects?

Innovative High Performance Products
A full range of Innovative high performance products that are designed to work together.
Technical Support
Hands on technical support from initial design and specification through to installation ensuring projects are delivered efficiently, compliantly and with confidence.
100% Accurate BIM Packages
Enabling architects, consultants and design teams to integrate reliable product data into project models, improving coordination, reducing design risks and supporting efficient project delivery.
EPDs and Certification Documentation
Providing transparent sustainability data to support environmental assessments, compliance requirements and green building accreditation schemes.

Hep₂O Articles

Kailash Manor Care Home
Find out how Tigris K1 and Hep₂O were used as an alternative to copper on this 85-bed new build
Hep₂O FAQs
In this article we take a look at some of the most frequently asked questions
Hep Key plus group 2_L
How to Demount Hep₂O
There are instances when a joint needs to be demounted or adjusted, here we explain how
Connect Hep₂O to a Radiator
From radiator outlet cover plates to first fix pipework, here's everything you need to know.

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