It would be more than enough for 2" though. On the performance curve for the electric pumps at 103 ft-head they should be putting out roughly 23 GPM, so for two pumps 46 gpm.Ĭlearly this is still low for a 3" or even a 2.5" dredge, according to the keene paper. Converted to feet of head thats around 104 ft. Power jets/ suction nozzles, according to the keene paper, run at 45 psi. Now the performance characteristics of the pumps: 3” and 4” power jet runs at 180 GPM at 35 psi 3”and 4” suction nozzle works at 106 GPM at 45 psi P180 pump produces up to 250 GPM and up to 160 foot head. PHP160 pump produces up to 200 GPM and up to 160 foot head.Ģ.5” suction nozzle works at 78 GPM at 45 psi.Ģ.5” power jet works at 106 GPM at 40 psi. P90G pump produces up to 100 GPM and up to 160 foot head.Ģ”suction nozzle works at 45 GPM at 35 psi. Its one of the few places that I was able to find actual number on the flows and PSI needed, but here is the critical distinction:įlows and PSI needed for suction nozzles/ power jets consumption, NOT what the maximum rating of the pumps are.Īccording to them, here is the important part of the paper for those uninterested in following the link :P I started here, where Keene engineering put together a paper on dredging basics/troubleshooting/making your own. But I did do a little bit of research first. It might sound stupid at first, using well pumps in this application.
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