Sicce pumps

<a href=showthread.php?s=&postid=10438773#post10438773 target=_blank>Originally posted</a> by Jayson
Mike,
18 inch body. Thanks

55scfh is all you 18" bodied skimmer can handle? How big is the neck?
 
Jayson i send you PM .

i am going to mail to you also the original reducer by copying it on a gypsum you will be able to do the same as the original reducer with this material :

http://www.aquahub.com/store/diymoldaholder.html

at this way everyone can get it from you .


i can tell you 100% it's the same pump and this pump work great .

i am going to start to test on a new other pumps on my CS-8-3 skimmer next week and i will keep you posting.
 
Hahnmeister!

Here is my version of the venturi we've discussed.

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Yep... thats an exact copy I believe. I ended up just feeding the air with another piece of 1/2" PVC though bonded in through the side of the venturi housing... couldnt tap the threads in the coupling right... kept leaking.
 
Well i got my sicce suprema, the bottom of the impeller is broke off.....dohhhh. Anyhow, 990gph at 59 watts, its the same thing as the QO4000 except its 3/4" in and out. I did manage to get it to kinda work for about a minute. WIth it going and with me holding a 1/4" hose up to the inlet it was pulling 30scfh stock! That was unmodded. WIth 3 layers of mesh i think it'll easily get to over 50. The only prob i have is teh volute cover is not threaded at all so i'm not sure how you would use these guys as recirc's.
 
luke...use the force....

i know, not even funny....

but, where may i ask, did you purchase a sicce suprema?
i can buy wholesale...
or should i just do a qo4000, and make the in/out 3/4?
did i see in a pump pic that the 4000 has metal screws like a mag?
does the suprema as well?
 
the 3/4" in and out are really going to be the downfall of this pump i believe...unless it is easy to mod t 1". But if you want a QO 4000 with 3/4" I/O get the HH model, already comes with it.
 
<a href=showthread.php?s=&postid=10478172#post10478172 target=_blank>Originally posted</a> by JCTewks
the 3/4" in and out are really going to be the downfall of this pump i believe...unless it is easy to mod t 1". But if you want a QO 4000 with 3/4" I/O get the HH model, already comes with it.

why would you want 3/4? I wonder if the HH would have to torque to prevent restart problems...
 
<a href=showthread.php?s=&postid=10478185#post10478185 target=_blank>Originally posted</a> by shelburn61
why would you want 3/4? I wonder if the HH would have to torque to prevent restart problems...

KOraltek was asking about thye 3/4" I/O.

The big difference between the 4000 and 4000HH is prob the I/O and the HHprob has a larger dia, thinner impellervane. I'm not real sure though. You really want as big an output as you can.
 
Oh yeah, the QO 4000HH has a 3/4" outlet. This will greatly hinder the throughput of the pump. The best needlewheels are pond pumps... low wattage, high flow, low head. Keep that in mind. The other QO 4000 has a 1" out/in though.
 
Awhile ago I meshed modded a QO4000. I got 9-10 LPM. Now after seeing this thread I have modded the intake to 1" and 3/4" venturi 11-12 LPM. I then tried a 1" ball valve slightly closed 15 LPM. I have tried different wheels and layers of mesh. What am I doing wrong when others are getting 25 LPM. I'm thinking I need to open up the 'out' of pump. Not sure if I can get it to a true 1" part of the body is in the way.
 
I tried a venturi simular to yours. Except I don't have all the stuff on the front and my air intake is drilled next to pump cover. Is that 3/4" in the center of 1" threaded/slip?
 
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Mine looked much like top diagram except my air intake is closer to pump and 3/4" pipe may be closer as well. Do I have to have the tappered piece in lower pic? Or is the air intake too close?
 
got any pic's? I'm kinda slow at this hour. :)

The venturi I posted earlier in th thread is the diagram on the bottom...hahnmeister also built a very similiar one...I believe it still needs a little tweaking.
 
No, don't have any pics. I hear ya, it's getting late. I should have been more clear. In the lower pic there is a tappered piece at the end of the 3/4" pipe that I don't have. I used a part from a mj1200 that is 3/4" ID all the way through. On one end it is 1" OD and tappers down to about 3/4" OD. I put this in a 1" double threaded pvc and used some tape to seal gap. My air inlet is drilled into 1" threaded pump cover close to pump. I didn't have any startup problems with this which is good.
 
the very end piece is 1/2"pvc, tapered for a smooth transition. I tried it both ways and got more air using the 1/2" piece...it lets you get the pipe closer to the impeller which seems tp make a big difference. I did have to remove some material from the outside of the 3/4" piece...the last inch or so is sanded down to allow more air in.
 
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