WEKA Posted November 27, 2006 Report Share Posted November 27, 2006 Where can I get a check valve to fit in the 20mm line from the sump pump on my marine set up. I know it is not always recommended to use these and I have got an anti syphon on my main tank but it is a problem to do this with my second tank. I would like a valve that does not require to much pressure to open. Quote Link to comment Share on other sites More sharing options...
jetskisteve Posted November 28, 2006 Report Share Posted November 28, 2006 Cant you just drill a small hole on the water into the tank hose just below the surface, that will act as a syphon break? Quote Link to comment Share on other sites More sharing options...
WEKA Posted November 28, 2006 Author Report Share Posted November 28, 2006 I have a 900mm high hex acrylic tank which I want to run the supply line from my sump through the bottom. I don't want to have to run it up to the surface and back down to be able to create an anti syphon hole. Hope this makes sense. Have got a couple of swing checks coming from Auck tomorrow which should do the job, they have no metal components. Thanks for your interest. Quote Link to comment Share on other sites More sharing options...
TM Posted November 28, 2006 Report Share Posted November 28, 2006 Hmmmmmmmm I think your mad There is no way i would run a ck valve like that. I would run a pipe to the surface or put an overflow in. Maybe if you don't want to see any pipes drill the back panel. Quote Link to comment Share on other sites More sharing options...
WEKA Posted November 28, 2006 Author Report Share Posted November 28, 2006 It's a calculated madness TM. My sump is outside so at worst I will have a bit of saltwater around the back of the house. Quote Link to comment Share on other sites More sharing options...
TM Posted November 28, 2006 Report Share Posted November 28, 2006 Fair. Would all the water come out if it failed? or would there be some left in the tank. Corals, fish?? Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted November 28, 2006 Report Share Posted November 28, 2006 The cheapest,safest and most reliable anti siphon device is air gap seperation, otherwise you realy need a testable double check valve assembly and that is big bucks Quote Link to comment Share on other sites More sharing options...
WEKA Posted November 28, 2006 Author Report Share Posted November 28, 2006 I will have two tanks running off the same line from my outside plant room. The 80L hex is higher than the 500L in another room. The plan is to put a swing check under the hex and another outside on the main line. The 500L has an anti syphon hole in the line. The way I see it it is that if the hex swing fails it will find its level into the 500L and that tank will flow back to the sump which will accommodate the excess. If both fail it will drain the 80L from the hex!!!. Hex will have seahorses. Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted November 29, 2006 Report Share Posted November 29, 2006 You have something against seahorses then? Quote Link to comment Share on other sites More sharing options...
WEKA Posted November 29, 2006 Author Report Share Posted November 29, 2006 No Alanmin I think seahorses are great and looking forward to having them in my lounge. My swing check valves arrived today and I am impressed with them. They are just what I had in mind. I will try them out as discussed and see how they go. They will get tested everytime I feed the fish as I have a pump shutdown switch on each of the tanks for feeding time. Thanks for your comments Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted November 29, 2006 Report Share Posted November 29, 2006 The problem with them can be that if something gets stuck under the flap they will fail. Quote Link to comment Share on other sites More sharing options...
WEKA Posted November 29, 2006 Author Report Share Posted November 29, 2006 All the water passes thru a 10 micron filter before it goes thru the check valves so should never be anything large enough to cause a problem Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted November 29, 2006 Report Share Posted November 29, 2006 Good luck. Quote Link to comment Share on other sites More sharing options...
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