ASME Class 150#，300#，600#，900#，1500# and 2500#
Cast Carbon, Stainless Steel or Alloy Steel
Flanged ends or butt weld ends
Standard trim is API trim 12 with 316Ti bellows.
Stems are non-rotating with surface finish to maximize packing seal for low fugitive emissions
Bellows are hydro-formed rather than welded.
Each valve is shell, seat and backseat pressure tested per industry standard API 598