Dual Dashley Valve (DDV)
Dual Dashley Valve (DDV)
Dual’s Dashley valve operates on the discharge side of two pumps in parallel. Both pumps can run simultaneously or independently. When both or one pump is switched off, the ball will automatically drop back stopping the back flow to the pump.
DDV Features
• As the elastomer covered ball rises or falls it rotates with the flow.
• This ensures that the valve self cleans and permits it to open and close reliably even under severe conditions of slurry build up.
• Minimal pressure drop.
• Optional handwheel for isolation.
• Shouldered end connections for victaulic couplings (if required).
• Valve flanged to customer specification.
• Lifting Lugs.
• Balls can be replaced or inspected from top ball cover.
• Different mounting brackets can be fitted to suit application.
Product Specifications
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SIZE RANGE: |
100mm – 600mm. |
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OPERATING TEMPERATURES: |
80˚C. |
|
BODY TYPE: |
Fabricated Carbon Steel. |
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PRESSURE RATING: |
10, 16, 25 Bar. |
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VALVE LINING: |
Natural Black Rubber, Neoprene, Hypalon, EPDM, Ceramic or Urethane. |
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BALL: |
Urethane or rubber. |
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SEAT: (Replaceable) |
Any material requested by the client. |
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VALVE TYPE: |
Flanged. |
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FLANGE DRILLING: |
AS, ANSI, DIN, SABS or BS. |
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FLUSHING PORT: |
Fitted in ball body. |
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MATERIAL CERTIFICATION: |
Certified Chemical and Physical test reports can be supplied. |