Air-Operated Double Diaphragm Pump Polypropylene Construction & PTFE Diaphragm & 8.8 GPM Flow Rate Our self-priming diaphragm pump features an all-bolted polypropylene body and double PTFE diaphragms, sturdy and corrosion-proof, without leakage. Sealed ball valves and non-stall operation provides outstanding performance. It is perfect for transferring viscous and flammable fluids. Our top of the line self-priming diaphragm pump will ensure your operations are flowing smoothly. | Vevor | | Air-Operated Double Diaphragm Pump, 1/2 in Inlet & Outlet, Polypropylene Body, 8.8 GPM & Max 120PSI | White;Black | Best Buy