D.B. Smith FIELD KING 190328 Backpack Sprayer, 4 Gallon,

Very pleased with this sprayer. So far it has done all that I expected, and is a big improvement on my previous sprayer. To be recommended.

I use one of this product at my work and found very reliable and a very comfortable harness. I have to walk miles with it and that really helps . I have had no problems with in the last 3 months of use . So when I found it on Amazon I had to have one my self for my own private work.

Great quality sprayer, little more expensive but definitely worth the extra cost, wish I had bought this first time round as I would of saved buying a cheap one, they do say buy quality once.

Bought this to replace a smaller sprayer. Seems to work well, and has a good capacity.

When I unboxed this item it felt like a quality product. The lift handle on the top was very useful. The harness and shoulder straps are very comfortable and the selection of nozzles for different spray applications was a plus point. I was less impressed with the Field King once I got some water in it to test it. The first problem, quite a serious one once chemical are placed in the tank, is that the pressure vessel is easily detached and the resultant release of pressure projects the tank contents out of the top opening. I only had fresh water in the tank at the time but it was sufficient to make me consider sending the unit back. However the main problem, and I do not know if this was a design issue or the mechanism was broken, was that the pump handle needed to be rotated through an angle of about 150 degrees vertically down to almost vertically up to generate any pressure and it was only on the last few degrees of motion at the top and bottom of the stroke that I could feel any sort of resistance that told me it was generating pressure. I have two other back pack sprayers and the neither require more than about 30 degrees of motion on the pump handle. This made it virtually unusable and so I returned the sprayer and received a full refund.