55 gallon drum... 12volt... you guessed it... a 12 volt on demand sprayer pump, for say a "spot sprayer" basiclly any 50 to 30 gallon or smaller sprayer pump... the pump has a pressure switch built into it. so when you pull the handle on the spray gun. pump turns on. and when you release the handle on the spray gun the pump shuts off.
i ended up finding i think a 7 gallon sprayer on craigslist a few years back. everything worked, just needed larger container, pulled everything off and hooked it up to a 35 gallon drum. awesome!
the only issue, was watering pumpkin patches err hills. it was rather slow process. the GPM (gallons per minute) were just not there. if i had 2 smaller water pumps "same make/model" side by side, and went with say a 5/8" garden hose (not the cheaper 1/2" or 3/8" diameter garden hoses) i would been much more happy. 2 pumps side by side (parallel) give approx twice amount of GPM at same pressure. 2 pumps in series = same GPM at approx double the pressure. i want more GPM
the only issue is 12V battery only last for so long, and if you hook it up to truck battery or tractor battery you may not be able to start the tractor up if you accidentally turn it off. not a real big issue if you are only using unit for a 2 times a year for spraying weeds, but on daily basis.... or more than a couple 35 gallons drum worth... trolling motor battery is what i been using. don't remember specs for battery, about size of typical car/truck battery.
they make some higher GPM 12v bilge pumps for boats. but.. cost can be rather high. though this has been some years ago. and most of them do not have a "pressure switch" but a "float switch" float switch do not work with hand held spray guns....
i had a overflow on one of my lakes clog up on me, a few years back. generator was out of question at time. so chevy S10 blazer, a 12v to 110V inverter, and the cheapest "sump pump / submersable pump" i could buy more specifically smallest running amps. i had to rig up a 2 litter bottle and a stick. to slightly press down foot pedal to get RPM's up on vehicle to run the pump. to much foot pedal and RPM's go way to high. and not enough pedal and overload protection would trip on converter. i had to make sure i would run blazer 10 plus minutes after use. to make sure battery got recharged some.
--http://www.menards.com/main/p-1444428713624-c-8673.htm?tid=8965623806299822443 looks about right type of pump i used in above. though i want to say pump i have is down to 2 to 2.5amps. 1/4hp pump pretty small. but specs look about right.
--http://www.amazon.com/BESTEK%C2%AE-Outlets-Inverter-Charging-Smartphones/dp/B004MDXS0U/ref=sr_1_1?s=electronics&ie=UTF8&qid=1445745673&sr=1-1&keywords=12v+inverter i do not remember the inverter i have as far as watts. it is a cheapy and was on sale. i want to say some were between 300 to 700 watts. it only handle a couple 110v amps.
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12 Volt Water Pumps | Water Pumps | Northern Tool + Equipment a 3/4" maybe a 1" if going inlet/outlet sizes. might be just right. for about 10 minutes and empty a 55 gallon drum.
Wayne 12 Volt Self-Priming Transfer Water Pump 340 GPH, 3/4in. Port, Model# PC1 | 12 Volt Pumps| Northern Tool + Equipment = transfer pump = no good. no "pressure switch" built into pump. you would need to use a garden hose with no nozzle on it. makes for a big waste of water, and more of a mess.
Whale Gulper 12 Volt Self-Priming 220 Diaphragm Pump 200 GPH, 3/4in. Ports, Model# HD1552 | 12 Volt Pumps| Northern Tool + Equipment = diaphragm pump = no good. they can be bought cheaper BUT at cost of buying replacement diaphragms,many of on demand 50 or smaller gallon 12v sprayers = diaphragm style of pump.
Flojet 12 Volt Self-Priming Water Pump 294 GPH, 3/4in. Ports, Model# 04300143A | 12 Volt Pumps| Northern Tool + Equipment = piston pump = GOOD, but no good, no pressure switch. pistons tend to last much longer though higher cost.
Sprayer Pumps | Garden Sprayers + Lawn Sprayers | Lawn + Garden | Northern Tool + Equipment = PTO roller pumps. kinda like a piston pump in how long they last. issue, they do not turn off automatically if you release the handle on the spray gun. as a result you need some sort of "pressure relief/s" setup so you can use a spray gun. a garden hose = exploding due to pressures these roller pumps can easily create. relying on pressure relief when ever you release the handle on the spray gun = quick way to warm the water pump.
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http://www.amazon.com/Johnson-Pumps...545&sr=8-15&keywords=on+demand+12v+water+pump hhmmsss 4000GPH is a bit to high! related products on page.. on other hand might be worth checking out. lower GPH and cheaper!
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google keywords
12v pressure water switch
example of what was returned...
http://www.adafruit.com/products/99...TAozdfWlIR3_ZtsxyZrc_k6Ss0i2RLCRFoaAgCq8P8HAQ = 35 PSI descent. and could be used within one of the "transfer pumps" noted above. 35PSI is about were my well pump kicks on at here at home and shuts off around 45PSI if memory serves.
google keywords...
12v water solenoid pressure
brought back better results... if you can find min 1/2" and more likely better off up to 1"
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and all the blah blah above...
google keywords
12v sprayer pumps
http://www.northerntool.com/shop/tools/product_200578549_200578549 5.5 GPM * 60 = 330 GPH = right at the 12V transfer pumps noted above. with pressure switch built in.
http://www.northerntool.com/shop/tools/product_200612302_200612302 7.0 GPM * 60 = 420 GPH
the amps stink though. 17amps / 23 amps respectively above...
http://www.batterystuff.com/kb/tools/calculator-sizing-a-battery-to-a-load.html calculator to figure out "deep cycle battery size" *shrugs* figure amount of time to drain 55 gallon drum, add in some extra minutes for on/off usage. *shrugs* may not be best but get you in rough ball park figure of battery size.
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hilly billy riggin.... tractor was in use, deep cycle battery was in use with trolling motor... so... S10 blazer.... not enough wire of correct gauge to run from battery on blazer, back to pump that was on its own little trailer with 35 gallon drum. but i did have a couple 110 V male/female plug ins that i had to repair some extension cords.... end result... alligator clips on battery to 110v male plug, then 50 foot extension cord (everything else i had was to short of course), then 110v female plug to 12v sprayer pump. extension cord ran out from under hood, through passenger side window, out the back window, down to hitch and then over to trailer. and then a garden hose ran back the same way up to driver seat, so i could hang the spray gun out the window and drive along. spray gun ended up having about 6 to 8 foot length of cheap extensions you can buy for pretty much all handle held spray guns out there. my hand and arm quickly wore out, but i got it done, and got the weeds killed back.
