Used 450 GPH Manton Gaulin/Apv Homogenizer, Model M12 5 Tbs, Serial # 79312337. Features All Stainless Steel Exterior With Food Grade Polished Finish, Maximum Working Pressure 5000 Psi, 1 3/16" Diameter Plungers, Ball Valve Type With Hydraulically Operated Two Stage Valve, Analog Style Pressure Gauges. Former Application Food Ingredients.