Pump/Return/Ball Valve

  • We are currently upgrading MFK. thanks! -neo
[QUOTE='vspec';431610;7]No, before it bud.

So from the return pump - you have pump, pvc connector, T piece, Valve, DT.[/QUOTE]

Gotcha, and thanks again.
 
Actually I did, ran a one inch T back to the sump with a ball valve. And instead of installing a Check Valve on the return, I drilled
a hole right below the water line on the return tube that way if the power or pump failed, the water would only drop a half inch in
the main tank through the return from siphoning. Once the water reached the hole it broke the siphon.

Thanks for checking back and your help
 
i always over size all my pumps and return them back to the sump. lets u control the amount of water to the tank, and keeps the sump stirred up.
 
There are some that would argue that throttling back the pump will not hurt it is the long run as these are design to withstand a certain amount of head pressure. In some instances, a higher head pressure will decrease the energy utilization of the pump.
 
yeah as long as you have a mag drive pump throttleing it does no harm and most come with their own. If you have a direct drive pump that's a different story.

also this is why i always recomend oversizing the overflow this way no matter what the pump cant outpace it and you don't end up with water all over the floor. you just have to make sure the sump is big enough to hold the excess in case of pump/power failure. not a problem if you are using another tank or if you've planned your overflow location height wise correctly.

the T return is still a good idea anyway as said above to stir up the sump water. I personally use a smaller overflow to do that with the main big one going to the filter.
 
I believe the opposite true. I oversize the pump, if your pump cannot keep up with the drains then it is too small. With this comes noise in the drains.

If your pump is to small it will always be just that but you can always adjust a larger pump down.

I find it quieter to tee off and balance any excess flow back to the sump that the drains cannot handle and then mebbe just a wee bit more for a safety margin. In my case I tee off into a fuge but could just as easily teed off into the sump, even going thru a UV or inline heater and multitasking with it.

Drains run at near full capacity are quiet drains.
 
fox3;4329138; said:
I believe the opposite true. I oversize the pump, if your pump cannot keep up with the drains then it is too small. With this comes noise in the drains.

If your pump is to small it will always be just that but you can always adjust a larger pump down.

I find it quieter to tee off and balance any excess flow back to the sump that the drains cannot handle and then mebbe just a wee bit more for a safety margin. In my case I tee off into a fuge but could just as easily teed off into the sump, even going thru a UV or inline heater and multitasking with it.

Drains run at near full capacity are quiet drains.
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drains running at near full capcity are asking for water on the floor. any debris that get's caught in it will cause this AND overflows naturally build up sediment as they operate which is why you're supposed to clean them periodically.

in your case you actually then are providing less flow to the tank. I never said undersize the pump, I said oversize the overflow. These are two different things. One you are reducing turnover the other you are increasing it.

So say you have a pump that does 1200gph at the return ( typically 4' of head) and 2 3/4" overflows in your setup you then must throttle back the pump or T it off to make sure you don't flood the floor. Thus you are only circulating maximum 680gph through the top tank while your sump is getting the full amount.

in my setup I get the full 1200 at the return and the 2" overlfow is barely at half capacity which makes it quieter than your 2 full 3/4" overflows while offering almost double the flow to the top tank than in your setup.

I understand wanting to oversize your pump I say great hit 10x turnover or better but make your overflows even bigger then. that will give you the full turnover rate on the display rather than partial on the display and full turnover in the sump.
 
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