Featuring PTFE diaphragms and a full-bolt structure for a secure seal and long-lasting reliability. With a 4.4 GPM max flow, 170 ft max head lift, and standard port size, it easily transfers waste oil, and various acidic or alkaline liquids, not suitable for abrasive media or liquids above 140℉/60℃. | Vevor | | Air Operated Double Diaphragm Pump, 4.4 GPM, 1-1/2 inch Inlet & Outlet Pneumatic Waste Oil Transfer Pump, Max 100 PSI | White;Black | Best Buy