Scwd

Discussion in 'Pumps and Waterflow' started by Greg Bridger, 23 Jun 2012.

  1. Greg Bridger

    Greg Bridger

    Joined:
    24 Dec 2011
    Posts:
    279
    Likes Received:
    3
    Location:
    East London
    Hi all I'm busy with a new tank build and was wondering if anyone knew where I could find one of these[​IMG]
     
  2. AdS Guest




    to hide all adverts.
  3. dallasg

    dallasg Moderator MASA Contributor

    Joined:
    14 Dec 2008
    Posts:
    16,771
    Likes Received:
    582
    Location:
    Sandton
    Last edited: 23 Jun 2012
  4. Greg Bridger

    Greg Bridger Thread Starter

    Joined:
    24 Dec 2011
    Posts:
    279
    Likes Received:
    3
    Location:
    East London
    I am prepared to buy a second hand one. I don't suppose anyone has done some type of DIY that does the same job?
     
  5. DubKorps

    DubKorps

    Joined:
    24 Jun 2012
    Posts:
    488
    Likes Received:
    6
    Location:
    Sumwer in CT
    what is that???
     
  6. Rory

    Rory Admin MASA Contributor

    Joined:
    5 May 2007
    Posts:
    4,850
    Likes Received:
    34
    Location:
    JHB
    Wow haven't heard too much about those in recent years... At one point they seemed to be all the rage.
     
  7. marine101

    marine101

    Joined:
    14 Aug 2007
    Posts:
    429
    Likes Received:
    5
    Location:
    CTN
    that thing has been rendered redundant, thanks to the popularity of prop pumps for flow. i wouldnt use that
     
  8. Greg Bridger

    Greg Bridger Thread Starter

    Joined:
    24 Dec 2011
    Posts:
    279
    Likes Received:
    3
    Location:
    East London
    It's basically a switch valve of sorts. Water comes in the bottom of the unit and periodically comes out of either end at the top. It was used as a wave maker in the good old days
     
  9. Galibore

    Galibore Retired Moderator

    Joined:
    6 May 2007
    Posts:
    2,829
    Likes Received:
    19
    Location:
    Germiston
    I used to use a couple of them. They work beautifully. Especially for closed loop systems.

    It alternaltes the water from the one outlet to the other. The frequency depends on the input volume.

    If I remember correctly, the maximum flow it is recommended for is 3,000 L/H.

    A couple of these can create quite nice random flow. These are for smaller systems in my opinion.
     
  10. 2balive

    2balive

    Joined:
    6 May 2007
    Posts:
    2,179
    Likes Received:
    39
    Location:
    Camps Bay, Cape Town
    Yip, they are pretty neat, but probable redundant with the new wave controllers. One advantage though is that you can have a "inside pump" free tank with them.

    I still have one of their bigger brothers, think it is called an Ocean Motion 4 way valve in my storeroom. Alternate between four outlets. Ordered it for my never to be cube.
     
  11. Greg Bridger

    Greg Bridger Thread Starter

    Joined:
    24 Dec 2011
    Posts:
    279
    Likes Received:
    3
    Location:
    East London
    Had a look at the above mentioned, looks like a nice piece of kit
     
  12. Greg Bridger

    Greg Bridger Thread Starter

    Joined:
    24 Dec 2011
    Posts:
    279
    Likes Received:
    3
    Location:
    East London
    I'm planning a double return from my sump and thought I could out one in the return line and use it to create more turbulence by putting them in opposite corners
     
  13. Galibore

    Galibore Retired Moderator

    Joined:
    6 May 2007
    Posts:
    2,829
    Likes Received:
    19
    Location:
    Germiston
    Good idea I think.
     
  14. chikaboo

    chikaboo

    Joined:
    2 Jan 2009
    Posts:
    4,980
    Likes Received:
    48
    Location:
    Newcastle - KZN
    Nice .... Just 2 things to consider ... Dont forget non return valves or the sump will syphon everything back and with double the return flow will the water be slow enough if you have a DSB?
     
  15. Greg Bridger

    Greg Bridger Thread Starter

    Joined:
    24 Dec 2011
    Posts:
    279
    Likes Received:
    3
    Location:
    East London
    1. The returns will be just above the water so no chance of syphoning.
    2.Im going LR not DSB
    But thanks for the conserns
     
  16. Greg Bridger

    Greg Bridger Thread Starter

    Joined:
    24 Dec 2011
    Posts:
    279
    Likes Received:
    3
    Location:
    East London
    Only a good idea if I can get my paws on one of those
     
  17. Galibore

    Galibore Retired Moderator

    Joined:
    6 May 2007
    Posts:
    2,829
    Likes Received:
    19
    Location:
    Germiston

    I looked in old emails and pm's, but couldn't find where I bought mine. Was a local guy though. Sorry.
     
  18. belindamotion

    belindamotion Google Master

    Joined:
    24 Jan 2011
    Posts:
    4,803
    Likes Received:
    134
    Location:
    Pinetown,South Africa(KZN)
    Last edited: 25 Jun 2012
  19. Greg Bridger

    Greg Bridger Thread Starter

    Joined:
    24 Dec 2011
    Posts:
    279
    Likes Received:
    3
    Location:
    East London
Recent Posts

Loading...
Similar Threads - Scwd Forum Date
[wtd] Scwd Wanted 27 May 2015
Any problems with SCWD Pumps and Waterflow 11 Aug 2008
Scwd Wavemaker Test Kits, Controllers, Reactors and Dosers 19 Sep 2007