Limiting the sump pump output

[NubbsJRN]

Hello.
I am in the middle of a tank build and I would like advice on limiting the output of my sump pump.

Currently I am considering two options.

1) install a gate valve on the output side of the pump.

2) install a T on the output side of the pump going back to the sump with a gate valve

I am currently leaning towards option 2 as it would allow me to limit the flow to the display with a minimal amount of back pressure on the pump.

I appreciate thoughts and advice!

 

[Gorgok]

#1 will cost less electricity since the pump will slow from the head. As long as you only limit pump outlets not inlets it wont do any harm either.

#2 could be nice if ever wanted to use the pump to change some water quickly. Adding a pipe to that tee could drain the water somewhere other than the sump temporarily.

Or get a dc pump and slow it down with a controller.

 

[sbeason]

Either option would work. Ball valve on the outlet side of the pump, if you don't "t" off to send water back to your sump.

 

[Wazzel]

Either will work. Just and FYI, using a valve to control the flow does not slow the pump. It reduce the flow by creating extras losses. It does not do much to the power requirements since the power curve for most pumps is relatively flat.

FWIW I use a ball valve

 

[Shaummy]

Also consider for Option #2 if you may want to use the side flow to run any reactors for GFO or Carbon.

 

[A1t2o]

Why not do both, limit the flow with a gate valve after a T but use the T'ed off line for water changes and the like. You would need a shut off on the T as I would not recommend leaving it on at all times.

 

[NubbsJRN]

I thought about using it for gfo or carbon..my fear with that is if that starts to plug then I have too much water going to the display

From what I am reading about the pump....little giant 3-mdqx-sc they don't recommend restrictions the flow by more then 10-15 percent.

Currently I am thinking i want to tone it down by about a quarter