Thanks but my quastion is about the first part of your answer, i means that when we produce flanged valve by forge or cast as you mentioned also , we shall made it in the same material , which material is accepted, body and bonnet requirment as 36k,45k and 60k for whole parts( body and flange)...
But, in this situation, according to this table, BW valve can be 36k for 5000 class and flange valve sall be 60k in same class, what is the different between these 2 valve when we calculate minimume wall thickness in accordance with api 6a methods like vonn misses or asme sec 8 div 2 appendix 4...
As mentioned the requirment of materials for equipment in standard and non standard material table(table no 5 in api 6a) body and bonnet can be 36 up to 75K for example in 5000 class but also indicated that integral end connection flanged shall be only 60,75K,
So if we want to select valve with...
As mentioned the requirment of materials for equipment in standard and non standard material table(table no 5) body and bonnet can be 36 up to 75K for example in 5000 class but also indicated that integral end connection flanged shall be only 60,75K,
So if we want to select valve with flanged...
