Lever sprayers

 

— one of the varieties of sprayers powered by the user's muscular strength — along with pumps (see the relevant paragraph). The difference from pump-action models lies in the fact that in sprayers of this type the pumping lever must be constantly pumped — each movement of it sends a portion of liquid to the nozzle. This can be quite tedious, however, lever sprayers have their advantages. Firstly, they are simpler, cheaper and at the same time more reliable and safer: damage to the tank does not lead to an “explosion” with splashing of the contents, and the performance of many models is maintained even with a leaky tank. Secondly, large shoulder units of this type are usually carried on two shoulders, like backpacks — this ensures the most even distribution of the load; the pumping lever in such sprayers is installed on the side, most often under the operator's left hand.