Dual Double Non-Return Valve ( DDNRV )
Dual Double Non-Return Valve (DDNRV)
Dual’s Double Non-Return Valve operates on the discharge side of two pumps in parallel. Both pumps can run simultaneously or independently. When one pump is switched off, the ball will automatically drop back stopping the back flow to the other pump.
DDNRV Features
Flush ports.
As the elastomer coated ball moves, 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.
Replaceable ball and seats.
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SIZE RANGE: |
Valve body and Face-to-Face dimension can be changed to suit existing applications. 65mm – 900mm. |
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BODY TYPE: |
Fabricated Carbon Steel. The valve body can be lined in Natural Black, Neoprene, Hypalon, EPDM Rubber, Ceramic or Urethane. |
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PRESSURE RATING: |
10, 16, 25, 40 and 60 Bar. |
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SEATS (REPLACEABLE): |
Natural Rubber, Urethane or Stainless Steel. |
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BALL (REPLACEABLE): |
Urethane or Rubber. |
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FLANGED CONNECTION: |
Shouldered end connections for victaulic couplings if required. |
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VALVE INTERVALS: |
Valve flanged to customer specification. Flushing port in ball body. |
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OTHER: |
Different mounting brackets can be fitted to suit application. |
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166 Rotterdam Road, Apex Industrial, Benoni, Gauteng, South Africa
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(+27) 11 422 – 4326/7