Spray Rig Pump?

Should have had this project completed already, but I am running behind as usual. I have a 300 gallon tank that I am going to build a 3 pt. spray rig out of. I would like to use an electric pump vs a pto driven pump so it is easier to regulate my speed while keeping my spray pressure constant. By my calculations, I will need to supply less than 5 gallons per minute. Is an electric pump suitable for this and if so, what type pump would you recommend. I will be spraying coastal hay fields...what type/size spray nozzles do you all recommend.

Thanks for the help,
Timi

I sprayed a lot behind our planter. Used two, two hundred gallon saddle tanks with a flood jet nozzle behind each row on the planter. I used a PTO driven centrifugal pump. It was all manual, and I used old, time honored methods of calibrating the system, but once I had my Miles per hour down, row spacing, and the GPA I wanted, I could adjust the pressure accordingly.

Now I had no way to measure or prove this, but I felt that as I throttled down for curves or turns, the PSI dropped and it all seemed to work out fine.

An electric pump will keep putting out constant pressure, even when you slow down, putting on too much product.

That's my take on it.

Good luck, Gene

better get you a good book to read up on,TeeJet has a good book explains everything , your hight-speed-pressure-the kind of tips-gal per ac. , some need an agitator in the tank - think i'd be hard to find a electric big enough -- my 2 cents

I use a 12vt electric pump from Northern Tool, on my 55 gl. 3 pt sprayer. It's much better for me , than the PTO pump I used, to use. Booms are set up for 4 30" rows, with drops and fan spray nossles. This is a North Star 12 vt. diaphragm pump, and is RR ready,2.2 gpm,7.5 max amps, and 3/8 ports. also works well when I switch the valves from the booms, to the hand wand for brush spraying, or orchard use in the fall and spring. 300 gallon is going to bring your front wheels off the ground probably, must be a pretty big tractor!

My current spray rig is a 3 pt 55 gal rig with 20 ft booms. I run it behind my Case 1394. I have to guess-tim-ate my speed using the chart in the manual and I normally cover between 4 and 7 acres per tank depending on what I am spraying and how I have the sprayer calibrated (have tried different situations to see what works best). Since I cover so little ground, I spend a lot of time driving back to a water source to fill up and re-mix.

My plan was to put the 300 gal tank behind my JD 4450 w/FEL. If it was too much weight on the rear, I could reduce the amount of mix in the tank or offset with a little weight in the bucket. I can get a digital readout of ground speed from the tractor. I planned on using a pto driven pump to agitate the tank and an electric pump to pressurize the boom. I planned to turn off the boom with a switch when I got to the end of the field, then throttle down and turn around...then power up the boom going the other way. Then I could make one pass on each end of the field to spray what I missed.

Atwoods has an electric pump that puts out 7 gpm, but I was wondering if an electric pump could take the constant use required of a sprayer. As for spray tips, I have been using the fan tips, but was curious if you all would recommend them or the flood tips.

Thanks,
Tim

find you a john blue piston pump ground drive it ,don't have to worry about speed changes if there not to drastic ,just make sure you use the right size nozzles for the volume of fluid being applied