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Drinking water delivery

Multi-layer Composite Pipes (MLCP)

MLCP - a step ahead in plumbing solutions!


  • Multilayer Composite Pipes (MLCP) contain five layers and unite the advantages of a metal and plastic pipe, whilst eliminating the disadvantages of both materials at the same time
  • All layers are permanently bonded together by intermediate adhesive layers. A special welding technique ensures high reliability. The result is a pipe which is absolutely oxygen diffusion tight, corrosion resistant and has a heat expansion similar to metal pipes, which in turn fulfills all hygienic safety requirements
  • A unique feature of this solution is the aluminium core, which prevents oxygen ingress, reduces heat-expansion and gives form-stability for easy and safe installation.
  • For potable water connection the Uponor MLCP press system is the perfect solution to meet nearly all requirements. What's more the complete range of products allows for the entire installation from the riser to the tap/radiator, in a simple and economic manner.
  • It supports your building projects with quick and efficient plumbing installation. No matter whether you use MLCP for on-wall or in-wall mounting, for drinking water delivery or for radiator connections, we always have a suitable system solution for you.

See some examples of where our MLCP has been used on a variety of projects.


What merchants currently stock MLCP?

MLCP is available from national merchant brands across the UK and a selection of independents. If you are having difficulty finding a merchant, please call 01923 927015


uponor uni pipe plus

Advantages of MLCP

  • Low expansion rate, similar to copper
  • Corrosion resistance
  • Pipe is ‘form-stable’ when bent
  • Suitable for re-circulating systems
  • Ideal for use with ‘manifold’ plumbing schemes
MLCP is ideal for radiator and tapwater connections

MLCP is ideal for radiator and tapwater connections

  • Variety of components for different installation options
  • Easy planning, low pressure loss
  • Pressure drop specifications and dimensioning easily done

Download an MLC Sales Brochure

MLC sales brochure images

Uponor MLCP Sales Guide

Learn more about our Multi Layer Composite Pipe solution

PDF 5.08MB

Pipe fittings related to the MLCP system

Smart Ends
Smart ends image


  • A new range of tap elbow fittings which remove dead legs, a major breeding ground for legionella bacteria, from plumbing systems
  • The new Smart Ends range permits installers to replace traditional T-piece plumbing systems
  • Can be installed either as part of a branch or loop installation
  • Available in MLCP/PEX and compatible with a wide range of fittings
  • WRAS approved
Download a Smart Ends Brochure


  • Available in all Uponor systems- MLC Press-Fit, Q&E Shrink-Fit, MLC Click-Fit (RTM)
  • Smart Ends clearly positions Tapwater outlets, which helps the project build process
  • The fittings are robust to site working conditions
  • The Smart End product range allows for a “Mix and Match” approach to projects
  • Uponor systems are quick and secure
MLCP press fittings

MLCP press metal and composite fittings

s press plus

MLCP press metal fittings

Advantages at a glance:

- No calibration, no deburring

- Colour coding

- Pressing identification

MLCP press composite fittings

Advantages at a glance:

- Made of PPSU

- Lead-free

- Lightweight

Advantages of the MLCP press system

Why is the MLCP press system ideal for tapwater and radiator connections?

  • Lightweight, flexible and form stable
  • Available in 16mm up to 110mm
  • Fittings in PPSU and brass
  • Slim and appealing on wall installation
  • Fast, flame-free installation; at least 50% labour saving
  • 100% oxygen barrier and low expansion rates
  • No wastage and fewer fittings required
  • Full European approvals

    When making a press fit joint, please select the following items: MLC pipe, Tools, press fittings, accessories and compression fittings 


uponor circle installation
Modular riser fittings

Modular Riser system

Effective way for the installation of risers

With the Uponor modular Riser System the installation is no longer a complex task.
The innovative Uponor modular Riser System reduces both your planning and construction work, because there are fewer building components to store, process and plan for. It is also quicker and easier to connect pipes.

Uponor modular Riser System MLCP fitting uses just 40 parts to achieve more than 300 fitting combinations, up to 110mm, and features a distinctive “click and lock” mechanism which removes the need for overhead pressing.

With the Uponor modular Riser System you will get new possibilities for everything from planning to installation.

Riser fittings

Key features

RTM fittings

RTM tool free fittings

RTM joints are available in 16mm to 25mm diameters and are colour coded to show at-a-glance which size to select. This saves you time and avoids any chance of error. The end result is a safe, professional job you’ll be proud of. Every RTM connection is quick and easy to make. Simply insert our MLC pipe into the fitting until you hear the distinctive click. This indicates that a secure joint has been made. You also have visual proof of success thanks to the 360º window, so once fitted you can forget it.

With RTM Ring Tension Memory you can forget all about soldering and pipe wrenches. The high carbon steel spring ring acts as the tool itself, applying even pressure around the pipe. Through its inherent memory it then cleverly maintains this pressure, absorbing temperature fluctuations to ensure a sound watertight joint at all times.

The revolutionary RTM™ fitting. No leaks. No tools. No equal.

Riser fittings

RTM system for tapwater and radiator connection

uponor technical information installation systems

MLC Tech Install guide_2015

MLC Technical Install Guide

Technical details and information on the MLCP system

  • MLCP press fittings
  • Uni Pipe PLUS


PDF 10.41MB