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#2
12/09/2004, 11:52 PM
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Depends on what size you need. What exactly do you need to do with it? If you are trying to get max flow and use the Y to split the flow, why not just go to one size larger tubing and use a normal T easy to find and still has very low resistance since you increased the size of the tubing.
Kim
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America will only be the Land of the Free as long as it is the Home of the Brave. |
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#4
12/10/2004, 12:11 AM
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http://www.plumbingworld.com/pvc.html#wye
They will have almost anything you need. Scroll up a few and you should see them... |
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#5
12/11/2004, 10:16 PM
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#10
12/12/2004, 03:24 PM
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I don't think that they make a "True Y" like you want. I had looked for one, but couldn't find one.
Can you put a ball valve on the straight pipe so that it equalizes the flow to the other output just so slightly to work like a "true Y"? |
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#11
12/12/2004, 04:56 PM
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Ken,
That is why I said to increase the size of the piping, if you increase the size of the piping the friction loss from the T will not be a noticable amount and you will be able to get more flow than you would with the wye. Kim
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America will only be the Land of the Free as long as it is the Home of the Brave. |
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#12
12/12/2004, 05:09 PM
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Quote:
ummm look at the picture again, those arent t fittings they are y, of course you wouldnt want to use a t, even using a true y which i doubt youll find, how much difference do you think the flow would be compared to the one i linked, not a whole heck of alot....... |
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#13
12/12/2004, 05:14 PM
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Quote:
if you increase the size of the pipe you are going to be pushing more volume at a slower rate, in fact increasing the slow flow your trying to get away from, youd be better off keeping pipe small and backing it down with a ball valve (im sure ill get flamed for this) which ive been doing for almost a year now without any problem on a mag 18..........you can always slow down flow , you cant speed it up much........ |
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#14
12/12/2004, 05:26 PM
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Wasp,
you are partially correct, in that the larger pipe will push more volume at a slower veloctity, not a slower rate, you will get more gallons per hour out of the pumbing. At the end of your plumbing you can neck down the size to increase the velocity again. But with the lower velocity of water in the pipe you have less friction loss and it is much easier for the water to change direction so items like elbows and Ts do not effect the amount of friction loss. My question to you is why would you want to purchase a mag 18, 1800 gallon per hour if you only want say 950 gph out of (via the small tubing and ball valve), wouldn't it be much less expensive to just purchase a smaller pump and pay a lower power bill. Kim
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America will only be the Land of the Free as long as it is the Home of the Brave. |
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#15
12/12/2004, 06:16 PM
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like i said, its easier to slow down than speed up, i didn't want to take a chance on a smaller pump not being adequate, as it stands now my ball valves are barely closed a bit, so it was almost the right call, i have pics in gallery to see setup.....also, when i do a water change i pump water up from downstairs via an rv drinking water hose using a mag 18, if the 18 fails in the tank i can replace it with the one i use downstairs with no adjustments necessary, if i had 2 different types of pump it would be more work for me, so yes i pay a bit more in electric, but its more convenient this way................
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#16
12/12/2004, 06:23 PM
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here is something to give you a headache,
http://www.advancedaquarist.com/issu.../featurejp.htm i just used a y on 3/4 pipe, no headache 
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#17
12/18/2004, 03:14 AM
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I'm sure this is too large a diameter for what you're looking for, but just in case:
HomeDepot and Lowes sell Y fittings ("true-shaped" Y) in the ABS black plastic plumbing....unfortunately the smallest they carry is 1-1/2" diameter. I use the ABS for my 1-1/2" drain plumbing to feed into the garage where my sump is and it works absolutely great! They come in many different shapes including arched angles of various degrees and alot of different split-offs. Unfortunately, it doesn't do me much good for my return line, which is 1".... I suspect you're in the same boat.    
Last edited by tangnacity; 12/18/2004 at 03:27 AM. |
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