Air-Operated Double Diaphragm Pump Aluminum Alloy Construction & Nitrile Diaphragm & 75 GPM Flow Rate Our self-priming diaphragm pump features an all-bolted aluminum alloy body and double nitrile 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, 2 inch Inlet & Outlet, Aluminum Alloy Body, 75 GPM & Max 120PSI | Black | Best Buy