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Rising Stem Ball Valve

Friction free opening and closing/Low maintenance
Friction free opening and closing. Excellent against frequent switching and dirty service (fines). No friction on the seal. Compared with other type of valves an exceptional long life time.
Unique designed helix stem
The helix shaped stem design ensures absolutely no stem rotation
Single seat design
Optimal performance in high temperature service and services with continuously fluctuating temperatures and pressures (thermal expansion). No problems of trapped pressure between seals
Metal to metal sealing
Suitable for almost all temperatures. Fire safe design. Increased lifetime of the valve.

  • Helix stem ensures low maintenance due to non-contact, friction free opening and closing, which is excellent for frequent cycling.
  • Anti-blowout stem design
  • Backseat allows adjustable stem packing while valve is in service
  • Self-cleaning of sealing area due to immediate flow before rotation.
  • No rubbing/friction between sealing surfaces which is the primary cause of valve failure
  • Standard design with Outside Screw and Yoke for easy gland packing adjustment.
  • Top-entry design for in-line service or maintenance.
  • Heavy wall thickness according API 6D/API600 provides extra corrosion allowance to reduce wear and extend the valve lifetime
  • Extended lifetime due to the selection of high quality materials which help prevent against wear and corrosion. Corrosion and wear resistant materials (Stellite 6) are used as closure members (ball/seat)
  • Mechanically energized sealing.

No weak points to obtain sealing like: - springs, - soft seals, - coupling cam constructions with pins, lubricated seals.


  • Bellow seal construction for critical and lethal services
  • Soft seal designed seat
  • Extended stem for underground installed valves
  • Extended bonnet for cryogenic or low temperature service

RSBV specifications

  • Design: API 6D
  • Range: Size 1” -16”
  • Pressure rating: ANSI Class 150-2500
  • Face To Face: ANSI B16.10, manufacturer standard or special customer request
  • Valve bore: Full bore or reduced bore
  • Flow direction: preferred flow towards seat. Bi direction at request


  • Hand wheel/gearbox
  • Electrical actuation
  • Pneumatic actuators