Valves
  
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Used on the end of a suction line to stop the fluids in the line emptying when the pump is turned off. This eliminates the need to prime your pump each time you start it.

Available sizes:
25mm, 32mm, 40mm, 50mm, 63mm
(1", 1 1/4", 1 1/2", 2", 2 1/2" BSPT/NPT)

Click here to help you choose which sized valve
  • Unrestricted flow
  • Efficiency in excess of 95%. Many other types 35% - 60%.
  • Valve opening and closing very responsive.
  • Unique Product Design incorporates built in strainer.
  • Operates via pressure differential.
  • Operates at any angle or position.
  • No poppet valve to wear.
  • Easily serviced - if required.
  • Blockage reduced due to low fluid velocity through slots.
  • Strong Non-Corrosive Materials - Body; High Quality Glass Fibre Reinforced Nylon, Diaphragm; Nitrile Rubber, Spring; Stainless Steel. All components of this valve manufactured from materials approved for use with potable (drinkable) water.
  • Maximum Recommended Working Pressure -
    16 Bar (1600 kPa. 235 PSI) @ 20°C.
  • Maximum Operating Temperature - 60°C.
  • When screwing metal products into valve, do not over tighten. All pipe work must be adequately supported.
  • Hansen have tested all its products for use with cold water up to a maximum temperature of 60°C (140°F). We do not recommend the use of these products with temperatures higher than 60°C (140°F) as plastic expands due to temperature increases. Hansen cannot guarantee the products will perform when used with temperatures over 60°C (140°F). Hansen products that have failed in temperatures higher than 60°C (140°F) will not be covered by warranty.
 
Cross section shows valve in fully open position   Cross section shows valve in fully closed position
When fluid is required in the direction of flow, the diaphragm opens allowing full flow. As the flow through the valve stops, the diaphragm closes preventing any return flow. The greater the back or head pressure, the better the diaphragm seals against the valve seat.
Downloadable Files
Valve Range
Marketing Brochure

NOTICE: The products on this web page are protected by intellectual property rights owned by the Hansen group of companies in New Zealand, Australia and other countries, including NZ patents 286543/299570 and 331955 and registered design 27591, Australian patent 708382 and registered design 13051; and patents/registered design in other countries. HANSEN and HANFLO are trade marks of the Hansen group of companies.