NorthStar Tow-Behind Trailer Boom Broadcast and Spot Sprayer - 21-Gallon Capacity, 2.2 GPM, 12 Volt DC

I decided after doing research that this was the best relatively low price tow sprayer. I conclude after using it a half dozen times that it works well, and is worth the price, and is a better choice than other alternatives that cost more. The parts appear to be durable, including metal adjustable hose clamps, strong hoses, real tires, and a good pump. It tows easily behind a riding mower, and does not tip over on moderate slopes.The assembly was fairly easy, and the instructions are helpful. A small issue that I had is that the instructions say to torque the bolts attaching the tow bar assembly to the plastic tank to 20 Ft.-Lbs. But the bolts would not tighten nearly that much, as if the receiving part was spinning in the plastic, or I was risking stripping the threads. So I tightened the bolts what I thought was a reasonable amount, and that appears to be adequate.I bought the 21 gallon tank option, but if I were to choose again, I would probably choose the 31 gallon tank. It does not cost much more, and would be useful if you are spraying a large area.

This is a well built sprayer. It assembled easily but I needed to use youtube to see how as there was no assembly instruction included in my shipment. There was a pinhole leak in the tee connection, but $1.50 spent at Home depot fixed this issue. This should not be a negative as there is no reason to blame the manufacturer. The only thing that prevents me from giving it a 5* rating is the molding on the poly tank. The threads for the lid and the drain plug were poorly extruded. The filler cap is hard to align and no matter how hare I try, I just can't seem to get that satisfacoty alignment that feels good. The drain plug could not be tightened enough to prevent leakage. With fluid in the tank, I tightened it aiming to stup when the leak ended. However, the cap skipped threads never tigtening enough. A few wraps of teflon tape made it usable. I contacted Northern Tool Company and they offered a replacement tank. That's good enough for me, the are willing to fix the issue. It has served me well so far, The ability to adjust the pressure allows significant control in how much product is released per unit of time. The bypass through this pressure regulator keeps my chemicals well mixed. Finally the consistency of the spray pattern is impressive. Testing with water on a piece of cardboard shows bery even distribution. It folds up nicelyt makeing it easy to store. The wand has two storage positions; one for storage and one for easy access. All in all I can easily recomment this unit for anyone needing a tow behind sprayer for the average user.

I am a Dandelion Mass Murderer. My only problem was running out of chemical and only having half what I needed. Gallon jug listed more then I needed BUT I forgot to read closer and see that it was listed for Southern grasses not Northern like where I live, which means double strength. The spray wand is a little awkard using fiber re-inforced hose which is stored by wrapping it too tightly around clamps up front. That leaves it wanting to be a coil even more then what that hard plastic wants to be normally. Draws a little under 6 amps (measured with my Fluke 75 multi-meter) on my John Deere X320 Lawn tractor, I saw no drop in voltage on the charging system when the power is engaged and the engine is running. From the factory the switch and harness hooks to the battery with the alligator clamps you expect to see on a motorcycle battery charger. Simple and effective. I may run it through my fused 12 volt adapter as the load is small enough and the fuse for that circuit is 10 or 15 amps.Set at 20 psi on the guage and running at 5 mph gives nice coverage. This is pretty much full out with the lawn tractor whose top speed is supposed to be 6 mph but it only shows 5 on my gps.If you've never pulled a sparyer before, get up early on a calm, dewy day and let your tracks guide you. Makes it easy. If you Don't get the chance and the winds are down, follow the tracks you've left by following the same pattern each and every time you've mowed the lawn. You know you do.The mount is a tad high for my lawn tractor, the lowest setting has it mostly level, I would have felt better with a little more play on the low side but this is designed to work behind a 4 wheeler and they have a higher attach point.Also, this is listed as a pesticide sprayer on the booklet. The instructions on how not to contaminate yourself are good and should still be followed with herbicide. The herbicide we mostly use here is Amine 24D. If you don't know what Agent Orange is, look it up. Granted it was Amine at a stregth to make this look like weak Tea but really you should limit your exposure to it as much as possible.Great product with listed parts online if you should ever need to replace something.