Technical Data
Spring Check Valves 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

For applications where flow in only one direction is required, Flowflex's Spring Check Valves are available. Our Disc Check Valve designed for a smooth action; the addition of a central guide offers further improved reliability when compared to traditional unguided disc check valves.

Our Brass Spring Check Valves have an advantage in that they can be installed in an either horizontal or vertical position. As upstream pressure increases, the spring-loaded disc is forced open, lifting the disc from its seat to allow flow through the valve.

  • Directional flow arrow for easy installation
  • Can be installed either horizontally or vertically
  • 5 Year Warranty


  • Domestic
  • Commercial
  • Industrial


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

Sizes 1/2" to 1" 1 1/4" to 2" 2 1/2" to 4"
Pressure Rating PN10 PN8 PN6
Working Temperatures -20°C to 100°C -20°C to 90°C -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.
Spring Check Valves
Intermediate pressure ratings shall be obtained by interpolation