Featuring triple-layer rubber diaphragms and a fully bolted structure for a secure seal and long-lasting reliability. With a 35 GPM max flow rate, 262 ft max head lift, and standard port size, it efficiently transfers waste oil, not suitable for corrosive acids/alkalis or liquids above 140℉/60℃. | Vevor | | Air Operated Double Diaphragm Pump, 35 GPM, 1 inch Inlet & Outlet Pneumatic Waste Oil Transfer Pump, Max 114 PSI | Black | Best Buy