... , CF3, CF3M 2) Class: 150 - 1500lbs 3) Size: 2 - 24" 4) S Features: 1) Material: A105, CF8, CF8M, CF3, CF3M ... 2) Class: 150 - 1500lbs 3) Size: 2 - 24" 4) Standards: API6D, ANSI B16.34 a) Face to face ... floating seat rings assurethe bi-directional tightness of the valve.The seats are carefully designed to minimize the torque ... open position, is a standard feature. Forged Steel Ball Valve