ANSI-B16.34 Complete Document History
Valves - Flanged, Threaded, & Welding End

Complete Current Edition:
   RENUMBERED - ASME-B16.4 - Jan. 1, 1996

Obsolete Revision Information:
   1988 EDITION - OBSOLETE EDITION BY REQUEST - Jan. 1, 1988
   1981 EDITION - OBSOLETE EDITION BY REQUEST - Jan. 1, 1981