... EPD Coating 4.Deep Carburized Wear Surface Name: Mud Pump Valve BodyFull Open Plate TypeMaterial: Alloy Steel, Ductile Iron, Grey ... IronFinishing: EPD CoatingDeep Carburized Wear SurfaceHeavy-duty valve designNo weldingDimensions and tolerances per ANSI Y14.51.These parts ... . We also make other parts for mud pumps like valve seat,piston,spring,pump plate,retainer etc.2 They are ...