... a large capacity, it is the best heavy oil pump. Double jacket model has the function of heat preservation, clients can ... heavy oil pump. Working Principle:Three Screw (One main, two driven screws)Main applications: Heavy Oil, bitumenDriver:Electric motor, diesel motor ... .577.21371260.6145037123155150×2-461580.6950455.5154175241.70.6145075236.5190 Double jacket casing heating three screw pump