... * Integral extended body with threaded, socket weld or butt weld connection* Bolted bonnet with spiral wound gasket or threaded and seal welded bonnet* Integral ... backseat* Socket weld ends to ASMB B16.11* Screwed ... : Class800 Materials : A105,F11,F22,F304,F316,F5,F51,F53 or Equivalent Actuation: handwheel