“MAKER:MAN B&W TYPE:6S46 MC-C MK7” “VALVE SPINDLE drw no:90801-151-863” MAN B&W.S46 MC-C.863 “MAKER:MAN B&W TYPE:6S46 MC-C MK7” “BOTTOM PIECE drw no:90801-151-851” MAN B&W.S46 MC-C.851