Features: Long neck , bi-direction sealing, integral flange seal, pinless disc, one-piece body, blowout proof stem,10-position locking handle/ gear operated Body:Epoxy coated cast iron/ductile iron, carbon steel, stainless steel Disc:Ductile iron nickel plated, aluminum bronze, 304SS, 316SS Stem:416SS, 316SS, Monel Seat: NBR, EPDM, Viton, Hypalon Chemical and petrochemical Oil and gas drilling and production Water and waste water Marine and government Power Agriculture Mining and materials Dry bulk handling