Technical Data
Compression Fittings Product Range

Last Updated

December 11, 2020

Flowflex reserve the right to alter the product ranges and specifications associated with its products without prior notice

Compression fittings are designed to mechanically form a joint between the fitting and the pipe. When tightening the nut, you are compressing the olive onto the tube, creating a permanent seal. Flowflex compression fittings are manufactured in the UK to the BS EN 1254-2:1998 Standard.

  • Compression Ends to BS EN 1254-2
  • Male & Female Thread Ends to BS EN 1254-4
  • A Kitemark licence is held for an extensive range of compression fittings
  • Marked Flowflex UK EN 1254-2 on Cap Nut


  • Domestic
  • Commercial
  • Industrial
  • Hot and cold water services
  • Heating installations
  • Fuel services
  • Low pressure gas pipework in domestic premises


Flowflex operates a quality management system audited by the British Standards Institute for the manufacture and supply of fittings and components for use in all applications of the HVAC industry.

Tube Compatibility

All installers should ensure that the size of the fitting matches the size of the tube, whilst also ensuring both are in good condition and free from damage and imperfections.

Flowflex fittings are designed to connect BS EN 1057 tube, for water and gas in sanitary and heating applications.

Warranty only valid when compression fittings are used with Flowflex olives supplied with the fitting.

Working Conditions

All working conditions assume that the components have been assembled and connected correctly, and adhere to their respective tube compatiblity
When planning to use our products in applications outside the scope of our recommendations, approval from us should be obtained beforehand. Please contact us in these cases.
Intermediate pressure ratings shall be obtained by interpolation

Material Specification

Electrical Continuity

Equipotential Bonding forms an important part of an installation, which ensures that all metalwork may be earthed or at least has the same potential to reduce the risk of equipment damage and personal injury. Isolated fittings or valves are not required to be bonded.

After all plumbing work has been completed, always ensure continuity checks are conducted by a qualified electrician in accordance with your applicable regulations.

Other Considerations