ProCam Diaphragm Metering Pumps are economical and reliable. These pumps with mechanically actuated dual diaphragms bring the advantages and security of the diaphragm design to applications with operating pressure up to 290 psi and flow rates up to 793 gph at an economical price. Here is the dimensional data on ProCam Diaphragm Metering Pumps - Models DS/DP 200 - DS/DP 500.