Technical Data
Float Valves Product Range

Last Updated

May 7, 2021

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

Flowflex Float valves provide a mechanism to fill water tanks, such as toilet cisterns. As the water level rises inside the tank, a float rises as well forcing the valve to shut and therefore stopping the flow of water. Our range of brass float valves can be used for water tanks, troughs.

  • 5 Year Warranty

Applications

  • Domestic
  • Commercial
  • Industrial

Approvals

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

Dimensions & Float Size

Size Seat Bore Tail Length Lever Size Float Size
1/2" 1/8" 1 1/4" 10 x 5/16" 4 1/2" x 5/9" W
3/4" 1/4" 1 1/2" 13" X 5/16" 5" X 5/16" W
1" 3/8" 1 1/2" 14 X 3/8" 6 X 3/8" W
1 1/4" 1/2" 2" 17 X 3/8" 8 X 3/8" W
1 1/2" 5/8" 2" 21 X 1/2" 10" X 1/2" W
2" 5/8" 2" 21 X 1/2" 10" X 1/2" W

Flow Rate & Size Selection Chart (GPM)

1/2" 3/4" 1" 1 1/4" 1 1/2" 2"
0.25 0.82 1.85 2.50 5.90 11.70
0.35 1.16 2.60 3.50 8.30 16.50
0.50 1.65 3.70 4.90 11.80 23.50
0.70 2.33 5.20 6.90 16.60 33.70
0.93 3.10 6.90 9.20 21.90 43.10
1.10 3.70 8.20 11.00 26.30 52.50
1.40 4.50 10.10 13.50 32.30 64.40
1.60 5.20 11.70 15.60 37.30 74.40
1.76 5.80 13.00 17.40 41.60 83.10
1.93 6.40 14.30 19.10 45.60 91.00
2.10 6.90 15.40 20.60 49.20 98.30
2.20 7.40 16.50 22.00 52.60 105.00

Pressure Rating & Working Temperatures

Product Range Float Valve
Pressure Rating PN14
Working Temperatures 0°C to 85°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.
Float Valves
Intermediate pressure ratings shall be obtained by interpolation