Technical Data
Isolation Valves Product Range

Last Updated

January 5, 2021

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

Flowflex Isolation Valves are a quick way of isolating flow on 15mm or 22mm copper pipe water or central heating system. Flow is controlled through a quarter turn action which moves the hole in the ball valve inline or out of line with the flow, preventing or facilitating flow as appropriate.

Isolation Valves are regarded as a long term and reliable solution, performing well after long periods of disuse. An advantage of an Isolation Valve is its quick operation which also makes it ideal for emergency applications. Flowflex Brass isolation valves can be supplied with a chrome finish.

  • Compression Ends to BS EN 1254-2
  • Quarter Turn Operation
  • 5 Year Warranty


  • Domestic
  • Commercial


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 valve matches the size of the tube, whilst also ensuring both are in good condition and free from damage and imperfections.

Flowflex valves are designed to connect BS EN 1057 tube.

Working Conditions

Product Range Isolation Valves
Pressure Rating PN16
Working Temperatures -20°C to 90°C
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.
Isolation Valves
Intermediate pressure ratings shall be obtained by interpolation