The Hypro D503 pump is an anodized, three semi-hydraulic diaphragm, and medium pressure pump that ensures top-level performance from small to medium sized sprayers. This pump can produce 14.3 gpm and 580 psi. The Hypro D503 pump is adaptable for male or female 1-3/8" splined shafts, 1" solid shafts, or gear reduction drive. This pump can be connected to a gas engine to spray herbicides, pesticides, and many other fluids.