PEX Fittings
Product Range

Flowflex PEX fittings is our solution for connecting brass fittings to PEX pipe. Fittings come manufactured with an insert and are supplied with a split olive to allow for a firm joint.

Our PEX range, 16mm and 20mm, brings quality and reliability to your localised water system and is suitable for use central heating and underfloor heating systems. Our PEX system range includes Brass Fittings, Valves, Manifolds, Pipe and Pipe Sheaths for a full system solution.

  • Mechanical, Heat-Free Joint
  • Can be installed on wet pipework
  • Compatible With Our PEX Pipe
  • Manufactured to BS EN 1254-3
  • Guaranteed for 25 years


  • Domestic
  • Commercial
  • Central Heating Systems
  • Underfloor Heating Systems

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Frequently Asked Questions

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Our PEX range is suitable for use on central heating and underfloor heating systems. Our PEX system range includes brass fittings, valves, manifolds, pipe and pip sheaths for a full system solution.

We stock a full range of PEX fittings from 16mm to 20mm.

No, like standard compression fittings all you need is an adjustable spanner, a pipe cutter and an internal & external pipe deburring tool. We have listed the required PEX Pipe specifications on our installation page.

PEX fitting joints are made when the integrated split olive is compressed between the pipe and the fitting. A pipe support must be used when installing on PEX Pipe, full details can be found on our installation page.

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