Yamada America G15PT11 G15 Global Series Air Operated Double Diaphragm Pump, Model Number 854916. Polypropylene Body, PTFE Diaphragm, Balls & O-Rings, Polypropylene Air Motor. 1/2" FNPT Inlet & Outlet, 16.6 GPM Flow Rate, Passes up to 1/32" (1mm) Solids.