15-20k ball valves

[breaker34]

What class under ASME B16.34 would ball valves with ratings to 15-20k have? I do not see a material in B16.34 that can be rated so high. Does 16.34 take us to 4500 special class then above 11,250psi do other standards then need to be followed?

 

[Jerryhao]

May be you need to use API 6A.