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Old    Jon Hunter (hunter660)      Join Date: Aug 2007       05-27-2010, 8:08 PM Reply   
Are there any locations I should avoid putting my ballast intake? Will it hurt if it is near the prop? Also is 1.25" large enough for 4 T1200 pumps?

Thanks
Old    D C (dirwoody)      Join Date: Apr 2003       05-27-2010, 8:25 PM Reply   
Not sure about the location, but I'd go bigger than 1.25"
Old    Trace (trace)      Join Date: Feb 2002       05-28-2010, 8:13 AM Reply   
I would put it at least a foot away from the prop. I could see suction on the upstream side of the prop causing problems. Mine is on the right side, just inside the stringer, about 18" forward of the prop. I use a 1.5" scupper for 4 T-1200's, no problems.
Old    Matt Foell (vr6mole)      Join Date: Feb 2009       05-28-2010, 8:50 AM Reply   
Quote:
Originally Posted by dirwoody View Post
Not sure about the location, but I'd go bigger than 1.25"
1 1/4 supports 5900 gph.

Even if the 1200's operated at max efficiency then you'll still be well within the limits.

But it may be easier to mount 2x 1inch thru hulls in different locations. The "bus" for 4 pumps may be a bit complicated.
Old    Jon Hunter (hunter660)      Join Date: Aug 2007       05-28-2010, 10:29 AM Reply   
Would 2 pumps on a 3/4" be ok?
Old    Duffy Mahoney (duffymahoney)      Join Date: Sep 2008       05-28-2010, 10:39 AM Reply   
I had the 1200's on my last boat. They are a pain to plumb because of the weird 1 1/4 thread. My new boat has all johnson-mayfair 1000 gph aerators and they are 3/4. Not a huge loss and super super easy to plumb. They are also cheaper.
Old    Matt Foell (vr6mole)      Join Date: Feb 2009       05-28-2010, 10:54 AM Reply   
Quote:
Originally Posted by hunter660 View Post
Would 2 pumps on a 3/4" be ok?

3/4 supports 2100 GPH so two 1200's would not be ok.

two 800's or jabscos would work
Old    Trace (trace)      Join Date: Feb 2002       05-28-2010, 12:36 PM Reply   
Matt, what reference pressure are you quoting those capacities? If that's city water (~40 psi), then those numbers are good for impeller type (Jabsco) pumps. Aerator pumps are only capable of about 5 psi max head, and less in vacuum.
Old    Trace (trace)      Join Date: Feb 2002       05-28-2010, 12:38 PM Reply   
Manifold for T-1200's:

http://www.wakeworld.com/forum/showt...unami+manifold
Old    Jon Hunter (hunter660)      Join Date: Aug 2007       06-01-2010, 3:01 PM Reply   
What about brass vs bronze for the ball valve?
Old    Matt Foell (vr6mole)      Join Date: Feb 2009       06-02-2010, 4:46 AM Reply   
you should use bronze.

I've got a couple 1 inch versions of these that I will let go for $20.
http://www.jamestowndistributors.com...ne+Ball+Valves

Cheapest online is $46 per.
Old    Jon Hunter (hunter660)      Join Date: Aug 2007       06-02-2010, 4:57 AM Reply   
Can you tell me why I should use bronze? I can get 1-1/4" brass valves for $20. Bronze is ~$53
Old    Matt Foell (vr6mole)      Join Date: Feb 2009       06-02-2010, 5:37 AM Reply   
http://media.wakemakers.com/2010/01/...-is-important/

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