Dual Flow Stop Valve (DFSV)

Dual ‘s Flo-Stop Valve has a reinforced stainless steel ball. The unique design of the valve allows free movement of the ball. The ball lifts out of the liquid without any interference. As the pump stops, the ball falls back and positively locates in the stainless steel seat due to its own weight and back pressure of the liquid The higher the pressure the better the secondary rubber seal will seal.


The Flo-Stop is the only proven maintenance and trouble-free dewatering valve in the world, with all these features

  • Perfect sealing.
  • Low head losses.
  • Non clogging, self cleaning ball.
  • Minimum back pressure for tightness: 0.3 to 0.5 bar.
  • Secondary seat rubber.
  • Maintenance free.
  • Full bore.
  • Silent, non-slam, reduces pipe hammer.
  • Fabricated valves face-to-face can be altered to suit different types of valve face-to-face dimensions.
  • Simple construction – one moving part.
PDF Brochure
Contact Us

dsfsdfsdf sfd sdfsdfsdf
f sd


The information and materials (Materials) contained in this web site have been prepared solely for the purpose of providing information about Dual Valves Intl. (SA) cc, its Principals’ products and partners to interested parties. Dual Valves Intl. (SA) cc have made every effort to ensure that all information provided on our website is accurate and up to date. Dual Valves Intl. (SA) cc takes no responsibility for any error or omission relating to this information. To the maximum extent permitted by law, Dual Valves Intl. (SA) cc will not be liable for any cost, loss or damage suffered by you through your use of Dual Valves Intl. (SA) cc website or Dual Valves Intl. (SA) cc’s failure to provide access to this Internet website or information updates. By accessing and/or continuing to use this web site you agree that neither Dual Valves Intl. (SA) cc, nor any of its officers, employees, agents, principals or contractors, will be liable for any direct or indirect loss or damage you may suffer or incur arising directly or indirectly from the use of any Materials on the Internet via web links from this site. You may download, store and use the Materials for personal and/or research purposes only.

The copyright in the Materials contained in this web site and this web site belong to Dual Valves Intl. (SA) cc and its principals and therefore our or our principals’ copyright must remain on all reproductions of Materials from this web site. You may not republish, retransmit, redistribute or otherwise make the Materials available to any other party or make them available on any website, on-line service or bulletin board of your own or of any other party or make them available in hard copy or on any other media without the express prior written consent of Dual Valves Intl. (SA) cc