Features:

Bolted Bonnet or Pressure Seal Bonnet
Flexible Wedge
Full Port
Outside Screw and Yoke (OS&Y), Rising Stem
Extended Bonnet For Cryogenic Services
Locking Device Optional
By pass on Request

Standards:

Design And Manufacture: API 600, API 6D, BS1414,Etc
Face To Face (End To End): ANSI B16.10, API 6D,Etc
Flanged Connection:  ANSI B16.5, ASME B16.47 Etc
Butt Welded End: ANSI B16.25,Etc
Test And Inspection: API 598, API 6D,Etc