The unit pictured was a sprayer we built using the customers existing mower trailer. We fitted to this a 100 litre 12v sprayer, regulating valve with gauge and we mounted a 3m boom to the rear of the trailer. The purpose of doing this was to give the customer options of using the trailer for other jobs. Removal time of the sprayer and boom would be approx 1-2mins due to the design of the boom attachment system.
We also used Quick release couplings for this sprayer, this is to allow the customer to easily change from his boom to his spray lance with out the need for any tools.