The AR135BP-GR3/4 diaphragm pump is widely used in the commercial, industrial and agricultural sprayer industries. With a flow rate up to 33.8 gpm and max pressure of 290 psi it is optimal for small or medium or large-sized sprayers, assisting in the targeted distribution of your liquid product onto desired surfaces for consistent, even coverage every time. This model is equipped with a gearbox with 3/4" hollow shaft for attaching to 5 to 6.5 hp engines.