2 pumps on 1 bulkhead? Ok or no?

[StirCrazy]

I would say try it but I doubt it will work good, but it could.

hows that for an answer

my concern is the size of the inlett of the dart. at 2" it will suck a lot of water but it all depends on the suction head pressure. if there is enough to supply the dart with lots left over then ya it will work, if not you will get cavatation in one of the pumps. best way to do it would be to have a large bulkhead, say 3" and have it go into a 3" pipe with a "T" on the end to feed the pumps. this will allow more water lower and creat a resivoir which is feed by a large bulkhead under a higher suction head.

Steve

[Delphinus]

Sounds good, thanks. It seems to me "it could probably work" also means "it could probably not work" and if there's a chance I have to drill out a new bulkhead anyhow, I might as well do it now when the tank is empty rather than down the road. I suppose that leaves more options open anyhow. Worst case scenario I end up not needing the bulkhead (ie., move to an insump skimmer) but then I can just cap it off, or use it for water changes or something.

[golf nut]

Darts can be fed with 1 1/2 bulkheads on closed loops easily because of the head pressure available, drawing from a sump however is slightly different, the higher the sump level and the greater the surface area will help in making this work fine.

I would go for it.

[StirCrazy]

Originally Posted by golf nut

Darts can be fed with 1 1/2 bulkheads on closed loops easily because of the head pressure available, drawing from a sump however is slightly different, the higher the sump level and the greater the surface area will help in making this work fine.

I would go for it.

the surface area really has nothing to do with the pressure of the water at the suction, it is all hight. that is my concern as most sumps are not that tall and we don't run them full so the suction head is going to be small. now if he had a 24" tall sump and ran it at 23" I would say most likely it would work, but that is unlikely.

Steve

[StirCrazy]

Originally Posted by Delphinus

I might as well do it now when the tank is empty rather than down the road. I suppose that leaves more options open anyhow. Worst case scenario I end up not needing the bulkhead (ie., move to an insump skimmer) but then I can just cap it off, or use it for water changes or something.

thats what I would do. makes for a nicer install also as you can have the pumps in different areas with out them being tied togeather.

Steve