ghostface Posted November 25, 2005 Report Share Posted November 25, 2005 anyone ever used one of these? http://www.hansenproducts.co.nz/products/valve/cv.htm wondering how much it will restrict flow when used on return pump... Quote Link to comment Share on other sites More sharing options...
Ira Posted November 25, 2005 Report Share Posted November 25, 2005 Massive restriction, poor reliability unless constantly cleaned. Drill a hole just below water level on the return(INSIDE THE TANK :lol: ) instead. That'll break any siphon before it overflows your sump if you have it high enough. Quote Link to comment Share on other sites More sharing options...
ghostface Posted November 26, 2005 Author Report Share Posted November 26, 2005 sweet. figured as much. Quote Link to comment Share on other sites More sharing options...
ghostface Posted November 29, 2005 Author Report Share Posted November 29, 2005 anyone know of any non return valves that arent crap then? Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted November 29, 2005 Report Share Posted November 29, 2005 Air gap seperation is the cheapest,easiest and most reliable. Quote Link to comment Share on other sites More sharing options...
HelifaxNZ Posted December 1, 2005 Report Share Posted December 1, 2005 Have to agree. Works well when I drilled a hole in my Hansen tank fitting, water side. Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted December 2, 2005 Report Share Posted December 2, 2005 An airgap of twice the diameter of the inlet pipe works pretty well Quote Link to comment Share on other sites More sharing options...
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