As a leading manufacturer of Air Operated Double Diaphragm Pumps,BSK is the ideal choice for the Alternative Energy Market. Whether you need a 3" pump for your biodiesel facility or an Ultra High Purity Pump for your solar panel fab, BSK's many material options have got you covered.Rugged BSK pumps feature wetted materials in 316 Stainless Steel, Aluminum, Cast Iron, Polypropylene, Acetal, PVDF, PTFE, and seven internal elastomer options to exceed your most demanding application requirements. Whether you're pumping caustic acid, a hydrocarbon, or even a powder, BSK's broad range of substrate options has you covered.