Pump calculations

[Phishy]

Can some one please tell me how many gph a magdrive 9.5 (950gph) submerssible will pump up 4.5 feet to the main tank? I have an overflow that will handle 700 gph (lifereef) and am wondering if I need to put ball valve in the return line to slow the flow.

If there is a calculator I would like a link please.

[cujion]

Specs:
115 Volt 60 Hz
93 Watts - 1.33 amps
14 Feet Shut Off
3/4 in/out threaded
950gph at zero feet
800gph at 4 feet
200gph at 12 feet


couldn't find the chat hope this helps

[Phishy]

So definitely put in a ball valve to restrict some flow.

[Geoff]

i would put a ball valve on the pump, but i do not think that it will used much. with any elbows in the line, or even nozzles on the outlets will cut down the flow a bit.

as for figuring it out on your own. pretty much all pump manufacturers will supply a pump curve for the pump. this will tell you the aproximate gph for given head height.

G~

[cujion]

the specs i put up there are for a Mag 950gph pump looks like at 4.5 feet it might be alittle to much for a 700 gph overflow but like Geoff said with the elbows it should work out I'd put one anyways in case u ever upgrade u don't have to do any plumbing