Dear All,

Now I need working an hydrotest procedure for my current project - piping skid.

We are using butt weld end ball valve welded with pipe.

My client hydrostatic test required hold time is 1 hour with 1.5xDesign Pressure (for piping).

But I am not sure the valve also can stand this pressure, especially the seat.

Are there any standard related to this case?

I really need some advise.