Material:

Body-cast iron, ductile iron, aluminum iron, ss304, ss316, carbon steel
Disc-plated ductile iron, aluminum iron, ss304, ss316, carbon steel, nylon steel, PTFE
Shaft-ss304, ss410, carbon steel
Busing-bronze, PTFE
Seat-nr, hypalon, EPDM, neoprene, NBR, wear-resistant rubber, viton, PTFE.