https://www.shhuhangvalve.com/Metal-to-metal-ball-valve.html Design standard ：API 6D ISO 17292 Metal to metal ball valve product range ： 1. Pressure range ：CLASS 150Lb~2500Lb 2. Nominal diameter ： NPS 2~60″ 3. Body material：Carbon steel, Stainless steel, duplex stainless steel, Alloy steel, Nickel alloy 4. End connection ： RF RTJ BW 5. Working temperature ：-46℃-425℃ 6. Mode of operation： Lever, Gear box, Electric, Pneumatic, hydraulic device, Pneumatic-hydraulic device; Metal to metal ball valve product features： 1.Advanced rocket-spraying process ensures that sealing is realiable under all temperatures — pressures. With hydrogen used as fuel, this process has been applied to the sealing faces of the ball and the valve seats; 2. Flow resistance is small; 3.Piston seat, fire protection-antistatic structure design; 4.No limitation on the flowing direction of medium; 5. When valve is in full open position, seat surfaces are outside flow stream that always in full contact with gate that can protect seat surfaces, and suitable for pigging pipeline; 6.Spring loaded packing can be chosen; 7.Low emission packing can be chosen according to ISO 15848 requirement; 8.Stem extended design can be chosen; 9.Metal to metal seat design can be chosen; 10. DBB，DIB-1，DIB-2 design can be chosen; 11.The ball is fixed with a supporting plate and a fixed shaft;