Flowzone Engineering Solution

Neles™ modular trunnion mounted ball valve, series X

The Neles series X modular ball valve features a sturdy stem-to-ball connection in its trunnion-mounted models. Application-specific seat selection ensures that the valves can maintain a tight seal for extended periods. The valves can also be equipped with Neles Q-trim™ anti-cavitation and noise-reducing trim technology, which outperforms other ball control valves. The series meets the latest industry standards for safety and emissions.


  • Easy to maintain construction
  • Trouble free operation even in most demanding applications like abrasive, solids containing fluids
  • Increased gas noise attenuation with Neles Q2-trim as option
  • Low emissions according to ISO 15848


  • 2-piece off-center split body, solid circular body joint gaskets
  • Anti-blowout stem
  • Robust stem to ball connection both in trunnion and seat supported ball models
  • Application based seat selection options, metal-to-metal and soft seats
  • Neles Q-trim technology for control applications, anti-cavitation and noise attenuation
  • Latest Neles Q2-trim™ option available for gas applications
  • Low emissions according to ISO 15848
  • Fire safe  certified according to API 607
  • SIL 3 certified
  • High Cv, including noise attenuation trims, which are designed self-flushing
  • High, long lasting tightness
  • Part modularity, reduced parts inventory for servicing
  • Wide material selection for application specific needs


Flanged, trunnion mounted, full bore ball valve
Size range
DN 50 – 600 / NPS 2” – 24” (trunnion mounted, full bore)
Face to face
ASME B16.10
Pressure ratings
EN PN 10 – 40, ASME 150 – 300
Temperature range
-50 °C … +600 °C / -60 °F … +1110 °F


  • Technical bulletin, Neles™ trunnion mounted, ball valves, full bore series X
  • IMO, Trunnion mounted full bore MBV ball valve, series XG, XM
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