VAM® Risers are the most experienced and successful Threaded and Coupled riser connections in the world.  They have been developed and run over the last twenty years. 

VAM TOP® FE is a threaded and coupled riser connector featuring high fatigue resistance (SAF ≤ 2.0 vs. DNVB1 curve).  It is the "Fati​gue Enhanced" version of the widely used and field proven VAM TOP® connection. 

VAM TOP® FE features a​ premium gas tight internal metal-to-metal seal identical to the famous premium casing/tubing connection VAM TOP® from which it was designed. Fatigue enhancements inclu​de a bending swoosh to provide more flexibility in bending, a smooth thread shape, and increased coupling OD versus VAM TOP®

​VAM TOP® FE has been the standard for riser applications for the last decade with over 1,000,000ft run throughout the world. 

 Applicable range

  • Available in sizes from 6-5/8" to 14", wall thicknesses ranging from 0.317" to 0.725" (special applications available up to 16")
  • Standard, alternative and special drifts
  • High strength steels up to 125ksi including Vallourec sour service grades.


Suitable for high fatigue applications:

  • ​​Drilling Risers
  • Inner Production Riser

Completion/Workover/Landing string.



  • ISO13679 qualified
  • High number of Make &​ Breaks, up to 25 on select sizes
  • High Fatigue resistance, SAF≤2.0 vs. DNV B1 curve. 


  • High fatigue performance makes it ideal for riser environments
  • Fatigue performance demonstrated with more than 100 full scale connections tested on a resonant fatigue frame
  • Compatible with VAM TOP® for easy crossover.  (VAM TOP® FE box to VAM TOP® pin)​.