All 150 and 300 Class flanged end valves are normally suppled with (1/16 in) 2 mm raised face with surface finish to 125-250 AARH.
Thickness of flange for Class 150, from 1-1/2“ to 3”, is valid only for flanges casted integral with the body, for loose flanges see ASME B16.5 table 9.
All 600, 900, 1500 and 2500 Class flanged end valves are normally suppled with (1/4 in) 7 mm raised face with surface finish to 125-250 AARH.
Class 900 and 1500 flanges are identical up to 3” size.
