Cast Steel Ball Valve , Two Pice Body design, Blowout-proof steam, Anti â static device, Spring Loaded Seats, Fire-safe to API 607/ API 6FA. Body / Cover : ASTM A216 Wcb Ball : ASTM A105 + HCr / ENP Stem : A182-F6a Seat Insert : PTFE Seal : Viton Bolting : A193-B7 / A194-2H Valve Size : 2â , 3â , 4â , 6â , 8â , 10â , 12â , 14â , 16â , 18â , 20â , 24â .