Will 1140gph be enough to return two 1.5" overflows?

[Serren]

I have two 1.5" internal overflows in my tank. My pump at six feet head height is rated at 1140gph. Am I going to be ok?

THANKS!

 

[THE ROOK]

You'll be fine. If you find the pump is overpowering the drains, just add a ball valve. You'll be able to dial in the flow to match.

 

[scaryperson27]

1140GPH shouldn't be too much for two 1.5" overflows. 1" can handle around 600GPH silently strictly under gravitational flow.

 

[Serren]

Awesome news! Thank you both very much!

 

[sivert55]

i recommend gate valves over ball valves for throttling down a pump.

 

[taklein65]

+1 on the gate valves

 

[sjm817]

Return GPH rate is determined by display and sump size, not overflow size. You could use 100 GPH with 2 x 1.5" drains. What size tank and sump?