For your medium-pressure sprayer applications, choose this Udor KAPPA-43/GR Diaphragm Pump. It's a three-diaphragm pump that includes a regulator unit with adjustable pressure controller, dual ball valve outlets, a manual dump lever and a pressure measurement instrument. It also comes with a gearbox for gasoline engines measuring between four and six and a half horsepower and with 3/4' shafts. Choose this for your industrial, agricultural or commercial spraying needs.