Addicted2ACRO's
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Isn't the ratings of these pumps ( 3600 gph ) based upon 0 feet?
Plumbing to Manifold
- Thread starter Addicted2ACRO's
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It is! — a “perfect world” flow number!
The pump progressively looses pressure as head height increases, or if a plumbing restriction creates artificial head!
I’d need to know make/model to see if there is a posted flow curve for your pump, but we can reasonably assume it can push around 2,500gph to your two display returns, as long as the well height isn’t over 6-8ft!
The pump will likely be flowing over 3,000gph into the manifold, once plumbing is sized correctly; this means you’ll be able to divert some flow to equipment and send the remainder your display returns; netting the large flow increase you initially desired
Addicted2ACRO's
Valuable Member
Well, no readily available flow curves, but I did find the next best thing…
We can see that this pump is still flowing over 3,000GPH @ ~4ft of head, so we know your manifold inside the stand will be able to see nearly max flow rate (assuming it’s sized up to 1.5” plumbing), and your dual 1” display tank returns will be easily maxed out at ~1,000-1,200gph each!
— at this point you’ll have so much display return flow that your display drains will likely not be able to keep up… you’ll have to restrict display return plumbing flow via a valve, or simply turn the return pump down!
Addicted2ACRO's
Valuable Member
So the final resolution is to build a 1.5" manifold up to the base of the returns at the bottom of the glass of the prefilters...the return themselves and the plumbing to the chiller will have to be 1"
Addicted2ACRO's
Valuable Member
Plus I'll have to install valves before the returns to control the flow not to overflow the drains or use 1.5" hose for the drains
I would have:
— the plumbing from the pump itself at 1.5”
— the manifold at 1.5”
— the chiller at 1”
— accessory manifold outlets at 3/4”-1”
— the return plumbing back to the display off the manifold at 1.25”, with a 1.25” valve
— the 1.25” display return plumbing tee’d, then reduced to 1” off both tee outlets for the 1’ display return bulkheads
Your drains will be limited in flow to the size of the bulkhead fitting holes in the glass of the tank!
That is, if the drain plumbing through the glass is 1”, adapting to 1.5” drain hose outside the tank will not increase the drains flow rate appreciably!
Addicted2ACRO's
Valuable Member
Well the way I have it now is the pump runs into the center of the manifold, then divides to each return, right and left...on the left side Tee's off to the chiller
Plumbing the pump into the center of the manifold is fine! — the pump plumbing and manifold will all be 1.5”, then you’ll reduce plumbing size off the manifold to each item it feeds!
The manifold is supplied with max flow, so it can then be distributed as desired by your plumbing and valve choices!
Addicted2ACRO's
Valuable Member
Well the dummy I am, I wish I would have known this before I bought 1" unions from Amazon. Oh well...no worries...I can return them. You see I'm retired and now I have some free time on my hands. I planned on removing my sump to completely clean it out and repositioning my skimmer, pumps, Clarisea and carbon reactor. So what I will do is take measurements and pre-build the manifold, so before I reinstall the sump, install the manifold. The joys of this hobby.
Addicted2ACRO's
Valuable Member
Do I need to install ball valves before the water flows to the returns as not to overflow the drains since the drains are 1" and I can not do anything to change that?
Hey, at least the unions are still returnable! — Better to know now, than later!
This does indeed sound like a great time to do a redesign!
And yes, building the manifold prior to installation can be smart! — keep in mind that 1.5” fittings aren’t cheap, but you should only really need a single expensive 1.5” union between pump and manifold; everything else will be 1.25” or smaller expensive parts! (unions, valves)
This hobby is indeed fraught with trial and error… haha the only reason I’m able to walk you through this major flow upgrade is because I’ve made plenty of my own mistakes!
This would be smart! — if the two 1” pipes to the two 1” display return bulkheads are roughly equal in length, you can just use a single valve on the 1.25” return plumbing, before it tees and reduces to 1”! (Possibly right at the display return outlet of the manifold, where it reduces from 1.5” to 1.25”)
Addicted2ACRO's
Valuable Member
This the tank I have...Marineland Corner-Flo Black Rectangular. Theirs a specific type of drain flow device in the pre-filters and I can't remember the name
This appears to be a dual Duroso standpipe style configuration! — max flow is 700GPH through each drain, so restricting the return flow (and/or turning pump flow rate down via controller) will be wise with your huge pump!
Addicted2ACRO's
Valuable Member
So the manifold will be 1.5", the 2 PVC hoses or plumbing coming out of the manifold ( right and left ) is 1.25" up to the return bulkhead which is 1". Where should I put the ball valves, at the manifold which is 1.5" or get 1.25" valves and install them on the plumbing?
Addicted2ACRO's
Valuable Member
Yes...couldn't remember the name...thank you
one moment, I’ll just sketch it out for you!
Far from my best technical drawing, but it gets the point across!
Your plumbing layout may call for things to be arranged a bit differently, but this is a general idea of how you’d plumb your manifold to avoid significant plumbing flow restrictions!
Addicted2ACRO's
Valuable Member
Ok...thank you, I have the premise...now I have to apply this configuration to my application. So you strongly feel this is going to get me more flow thru my returns to my display tank? Right now I have very little flow out of my returns even with a valve to my chiller to try and direct more flow to my display tank
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