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DFSV

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DUAL FLO-STOP VALVE

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.

FEATURES

  • The Flo-Stop is the only proven maintenance and trouble-free dewatering valve in the world with the following features:

  • Perfect sealing.

  • Ease of installation. 

  • Maintenance free.

  • Silent, non-slamming.

  • No pipe hammer.

  • Can be mounted in any position.

  • Low head losses.

  • Non clogging, self cleaning ball.

  • Prevents syphoning of valve.

  • Prevents pump from rotating in the opposite direction.

  • No scale build up on seat or ball.

  • Full bore.

  • Fabricated valves face-to-face can be altered to suit different types of valve face-to-face dimensions.

  • Simple construction - one moving part.

APPLICATIONS

  • Mining and mineral processing.

  • Power generation.

  • Sand and gravel.

  • Chemical and soda ash.

  • Pulp and paper.

  • Environmental and effluent.

  • Water.

SPECIFICATIONS

Size Range

80mm to 500mm.

Operating Temperatures

-10°C to +80°C.

Medium

Water.

Mine water underground.

Heavy, thick and viscous liquid.

Pressure Rating

PN 25

3.7MPa

2.5MPa

PN 16

2.4MPa

1.76MPa

PN 10

1.5MPa

1.1MPa

Working pressure

Shell test pressure

Seal test pressure

PN 100

15MPa

10MPa

PN 60

9.0MPa

6.0MPa

PN 40

6.0MPa

4.0MPa

For higher pressures, please contact the factory.

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