Anyone that sprays many acres can use this simple system for loading a sprayer and not going home smelling like herbicide.  Safe and easy just turn valves plumbed from shuttles; can connect up to 6 different herbicide shuttles 

No pumps that go bad; the sight glass on the side goes up to 27 gallons in the cylinder.  Can load 1000 gallon sprayer in 10 minutes or less.  
It is about 5 years old, nothing wrong with it.  Just upgrading.  Sells with the Honda engine and pump

620 six one seven

one five nine zero