Brianemone Posted October 12, 2005 Report Share Posted October 12, 2005 any one have a suggestion of what to use for this?? Quote Link to comment Share on other sites More sharing options...
reef Posted October 12, 2005 Report Share Posted October 12, 2005 air valve, drill a hole on top and silcon it in, make sure it is tight. Quote Link to comment Share on other sites More sharing options...
Ira Posted October 12, 2005 Report Share Posted October 12, 2005 I use the cheap $1ish airline valves from a pet store. 2 of them aren't quite enough to flow enough air for my overflow though. 3-4 would probably be ideal, but that's getting a bit ridiculous. Quote Link to comment Share on other sites More sharing options...
Brianemone Posted October 12, 2005 Author Report Share Posted October 12, 2005 any particular type of air valve? Quote Link to comment Share on other sites More sharing options...
reef Posted October 12, 2005 Report Share Posted October 12, 2005 I use the cheap $1ish airline valves from a pet store. 2 of them aren't quite enough to flow enough air for my overflow though. 3-4 would probably be ideal, but that's getting a bit ridiculous. if you need that many then you dont need a valve, i dont use any. Quote Link to comment Share on other sites More sharing options...
Pies Posted October 12, 2005 Report Share Posted October 12, 2005 I use a drilled hole. Quote Link to comment Share on other sites More sharing options...
Ira Posted October 12, 2005 Report Share Posted October 12, 2005 The T shaped ones with the screwy bit on them...I'd try and find a pic but Google image search isn't working :-? Quote Link to comment Share on other sites More sharing options...
Ira Posted October 12, 2005 Report Share Posted October 12, 2005 if you need that many then you dont need a valve, i dont use any. Just drilling holes I couldn't get the water level stable so it would stop siphoning out too much water and gurgling then filling the tank with bubbles from running the pump dry. What I need is a bigger valve, but I haven't bothered to look for one. Quote Link to comment Share on other sites More sharing options...
reef Posted October 12, 2005 Report Share Posted October 12, 2005 i just drill a 1mm hole. you could just get the cheap airline valves, i think they are green or blue. Quote Link to comment Share on other sites More sharing options...
tel Posted October 12, 2005 Report Share Posted October 12, 2005 some people drill a hole sideways thru the end cap(side of cap) and the top of the durso both,and then turn the cap to regulate it. Quote Link to comment Share on other sites More sharing options...
chimera Posted October 12, 2005 Report Share Posted October 12, 2005 I use a drilled hole thats the best post on this thread. i just drill a hole too if you use an air valve, be prepared to maintain it - salt build up etc. air valve is a waste of time. if you drill the right size hole in the first place the water will stay level. http://www.dursostandpipes.com/ Quote Link to comment Share on other sites More sharing options...
Feelers Posted October 12, 2005 Report Share Posted October 12, 2005 If you cut a right angle triangle out of the pipe, and a slit in the plug, you can turn it round to regulate air flow. Lid with slit ___________ | || | | || | top of pipe |\ | | | \ | | | \ | | | \ | | cut a v on less of an angle than this and have a slit on the plug. When you turn the plug the slit gradually has a bigger intake as it gets further along the "V" cut. I think this might be what tel is saying. Quote Link to comment Share on other sites More sharing options...
Feelers Posted October 12, 2005 Report Share Posted October 12, 2005 Dammit I did a pretty good drawing, but it deleted all the spaces. Well, I'll see if I can find the place I read it. :evil: Quote Link to comment Share on other sites More sharing options...
Feelers Posted October 12, 2005 Report Share Posted October 12, 2005 Oh as a random quesiton what would happen if you put an air pump on a venturi intake? I was thinking I could put a crap airpump from an old tank on. Would this be better, worse or indifferent? Quote Link to comment Share on other sites More sharing options...
Drifty Posted October 12, 2005 Report Share Posted October 12, 2005 i just drilled a hole in mine, never had a problem with it Quote Link to comment Share on other sites More sharing options...
chimera Posted October 12, 2005 Report Share Posted October 12, 2005 Oh as a random quesiton what would happen if you put an air pump on a venturi intake? I was thinking I could put a crap airpump from an old tank on. Would this be better, worse or indifferent? for a skimmer? I thought about the same thing, but then the venturi pumps will only suck as much as they need to. typically you need to shut the valve down to a smaller opening on these intakes to reduce get finer bubbles and thus better skimming - so I'd say an airpump on it would be worse, bubbles would be too big. skimmer manufacturers would have most certainly R&D'd this idea already Quote Link to comment Share on other sites More sharing options...
cracker Posted October 13, 2005 Report Share Posted October 13, 2005 This is my design. An ozone valve and restricting tap. This Durso runs 100% silent as it is full siphon and is finely adjusted to exactly match return flow. Works awesome. Overfllow level is 5mm below tank level, (no noise). Have to keep the valve clean every couple of weeks though. Quote Link to comment Share on other sites More sharing options...
cracker Posted October 13, 2005 Report Share Posted October 13, 2005 A pic of slight level difference. Quote Link to comment Share on other sites More sharing options...
Pies Posted October 13, 2005 Report Share Posted October 13, 2005 Cracker. Understand the way the durso should work. If you use a tap to restrict the flow of water then if something blocks the pipe (snail for example) the tank will over flow. The idea behind the Durso is that because of the way air is drawn in that if the water level rises, more water is pushed throgh because of gravity, but if you have a pipe just big enough, then it may fail. FYI. Looking awesome, MORE PICS! Doesn't look too blue to me, looks spot on. Pie Quote Link to comment Share on other sites More sharing options...
Ira Posted October 13, 2005 Report Share Posted October 13, 2005 You can adjust the height of the water level in your sump or the chamber the return pump is so that the pump runs dry before it over flows. No overflowing tank. Probably a good backup anyway just in case a durso that's set up normally not like Cracker's gets blocked by something. Quote Link to comment Share on other sites More sharing options...
cracker Posted October 13, 2005 Report Share Posted October 13, 2005 Yeah...I know the risk....With the airflow...you get noise, no matter how small the hole. i have Zero noise. I will keep an eye on it. see if it causes me grief! I may install a back up....not sure how yet...... Quote Link to comment Share on other sites More sharing options...
reef Posted October 13, 2005 Report Share Posted October 13, 2005 the water level is way too high for the durso, i hope you dont get any overflow on to the floor. When the durso is done correctly you should not get any noise. Quote Link to comment Share on other sites More sharing options...
Pies Posted October 13, 2005 Report Share Posted October 13, 2005 Its not like there is anything under the tank to worry about Why bother with the Durso? Why not just use a straight pipe and put a tap on it? IRA - When I was running you tank I had no issues with the hole, I know Suphew whos tank is identical as far as pluming and overflow, just has a hole. Tweak the hole size. I get noise from my overflow, but my issue seems to be one of velcoity, so much damn water Pie Quote Link to comment Share on other sites More sharing options...
Ira Posted October 13, 2005 Report Share Posted October 13, 2005 I did try tweaking the hole size, I couldn't get it right, that's why I put in the airline valves so I wouldn't have to keep constantly drilling new holes. Quote Link to comment Share on other sites More sharing options...
chimera Posted October 13, 2005 Report Share Posted October 13, 2005 i certainly recommend against that valve. while it seems a good idea, you want the maximum size hole going into the durso. restrict it and you are asking for trouble. nice place for your thermometer,... but give it a few months and you wont see it! Quote Link to comment Share on other sites More sharing options...
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