Odd pump question?
Odd pump question?
(OP)
I have a 7.5hp submerged pump (well) gong into a pumphouse and not connected or used. Just a capped pipe. My question is this; can I use this well to water (irrigate) a surrounding 2 acre area. Has no reservoir, bladder tank nothing. Will I ruin the pump if I just run it and water the area?





RE: Odd pump question?
good luck
RE: Odd pump question?
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RE: Odd pump question?
RE: Odd pump question?
RE: Odd pump question?
You pump/motor combination is capable of delivering 60 gpm (3600gph) @ 60% efficiency against a Total Dynamic Head ( TDH ) of 297 feet of water. You need a slowly opening and closing check valve on the discharge side of the pump to prevent losing prime, reducing water hammer and ensuring that the pump starts against some positive head. The, you need to size the distribution piping to meet your irrigation needs within the limits set by the pump horsepower and well capacity.
good luck
RE: Odd pump question?
Another factor to consider is the capacity of your well - will it sustain a flow of 3600 gph.
RE: Odd pump question?
RWF7437 unless I misunderstand IMM600 is talking about a submersible pump. Being under water it will already have a positive head to start against. Also most pumps of this size have a spring loaded check valve built into the head of the pump. The concern is depending on the climate, it may have to be removed so that in the winter the column pipe can drain back below the frost line.
For cooling of the motor, Franklin motors requires that a 4" motor in a 4" well have a minimum flow of 1.2 Gpm
4" 5" 7
4" 6" 13
to meet the reuired flow of .25ft/sec.
RE: Odd pump question?
You need to examine the pump curve to determine whether or not that you will overload the pump motor if the pump runs out on the curve. That may happen if you are pumping against a lower head than the pump was designed to operate at.