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01-15-2004, 05:02 PM
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#1
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Pretty In Pink
Join Date: Jun 2002
Location: portland or
Posts: 3,170
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Sinusoidal Valve
Planning for the next tank - lack of room in a tank that does not offer room to aqua-scape (100aga 72"l x16"x22")
I am a fan of the closed loop. No PH's in the tank and only one pump to do this chore. But who can afford a motorized ball valve with an actuator - easy $300. Dr. Michaelson first came up with the idea of using PVC and a 1 rpm motor to turn a shaft, with holes drilled 90' from each other. So as it turns, one "port" is open and the other is closed. And it just turns 360' 24/7. I had my good friend Dave- in Corvallis machine the shaft for me and I got it back yesterday.
So I have one part of the puzzle for the next upgrade - in-wall 300gal ply-wood tank.
Water intake for the valve is on the bottom. And the exit is on top. Makes sense 
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Last edited by wanareef; 01-16-2004 at 07:45 AM.
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01-15-2004, 05:05 PM
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#2
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Pretty In Pink
Join Date: Jun 2002
Location: portland or
Posts: 3,170
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Another shot - the exit to the tank excuse the hand 
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Last edited by wanareef; 01-15-2004 at 05:13 PM.
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01-15-2004, 05:07 PM
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#3
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Pretty In Pink
Join Date: Jun 2002
Location: portland or
Posts: 3,170
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This what the shaft looks like, made of Delrin. Thanks again Dave for your help
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Last edited by wanareef; 01-16-2004 at 04:59 AM.
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01-15-2004, 05:37 PM
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#4
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ROOTS...ROCKS...REGGAE
Join Date: Feb 2000
Location: south suburbs of Chicago,Il USA
Posts: 1,214
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Cool!! Do you think the holes in the shaft are large enough for the flow of the pump?
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01-16-2004, 03:26 AM
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#5
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Pretty In Pink
Join Date: Jun 2002
Location: portland or
Posts: 3,170
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It'll have to be. The shaft is 2" and the holes are 1". I might try and enlarge them a little, but I don't want to weaken the shaft any.
For credit:
Here is the link to Dr. Michaelson valve http://avdil.gtri.gatech.edu/RCM/RCM...ionSystem.html
and here's the one to reefmadien site and her valve http://members.cox.net/reefmaiden/valve_diy2.html my inspiration.
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Last edited by wanareef; 01-16-2004 at 07:42 AM.
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01-16-2004, 05:00 PM
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#6
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squid
Join Date: Jan 2003
Location: NorCal
Posts: 6
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What type of motor is that? Seems a little small for the job at hand?
Nice Work, BTW.
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01-17-2004, 02:11 AM
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#7
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Pretty In Pink
Join Date: Jun 2002
Location: portland or
Posts: 3,170
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It's a grainger 1 rpm motor. It's all 2" pvc reduced to 1.5" in and out. Yea the restriction will be the shaft ports, but will try to open up a little more without weakening it.
Have another one in the works, so will have 2 of these on the tank. 
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01-17-2004, 03:51 AM
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#8
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ROOTS...ROCKS...REGGAE
Join Date: Feb 2000
Location: south suburbs of Chicago,Il USA
Posts: 1,214
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Opps, I didn't realize the holes were that big. Hard to tell by the pic.
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07-27-2005, 12:19 PM
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#9
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Shark
Join Date: Mar 2005
Location: Shawnee, KS
Posts: 1,629
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how much does it cost to make? can you give more step by step on building it
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29 gallon, 150 watt DE PFO mini pedant, 2 x 24 watt HO t-5, 2 x tunze 6025's, mag 7 run thru SCWD 40lbs rock
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07-30-2005, 02:29 PM
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#10
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squid
Join Date: Oct 2004
Location: Sweden
Posts: 3
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How does it goes with the building?
Great ide i plan do do one by my self to mu Deltec 4040 pump  |
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08-17-2005, 07:36 AM
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#11
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Really Fishy
Join Date: Jan 2003
Location: Braselton, GA
Posts: 108
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Did this idea ever work out for you?
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11-11-2005, 11:24 AM
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#12
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Shark
Join Date: Mar 2005
Location: Shawnee, KS
Posts: 1,629
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how about an update?
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29 gallon, 150 watt DE PFO mini pedant, 2 x 24 watt HO t-5, 2 x tunze 6025's, mag 7 run thru SCWD 40lbs rock
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11-11-2005, 02:51 PM
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#13
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BIG SMELLY MOD
Join Date: Dec 2004
Location: Livingston Parish, Denham Springs, Louisiana
Posts: 16,805
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yes update us. How is it working
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Vince aka VINNIE
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