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Rising Stem Ball Valve - RSBV

Brand: Valbart

Valbart RSBV Rising Stem Ball Valves are the oil and gas industry’s choice for applications requiring a mechanically energized metal or soft seat to prevent losses from process contamination or material leakage. 

The are ideal for frequent cycling.
Features
  • Extended service life and low maintenance costs due to unique helix coil stem design, which enables friction-free opening and closing.
  • Improved product quality, efficiency and safety with tightness performance up to ANSI FCI-70-2 Class VI.
  • Easy in-line inspection and maintenance enabled by top-entry design.
  • Reduced corrosion due to heavy wall thickness in excess to ASME/ANSI B16.34.
  • Improved personnel safety from blowout-proof stem that meets international standards of API 600 and 6D.
  • Combination of a quarter-turn ball valve with a linear movement of non-rotating stem.
  • Trunnion mounted design.
  • Reduced or full bore.
  • Single seat (no valve body cavity).
  • Unidirectional or bidirectional.
  • Metal to metal seat with stellite welding overlay (soft seat insert on request).
  • Outside screw and yoke for adjusting of stem packing.
  • Blowout proof stem.
  • Suitable for very high frequent cycling operations (switching valves).
  • Tight shut-off by means of application of external mechanical force and not dependent on differential pressure.
  • Proper selection of materials to avoid galling and high friction.
  • Protected lower trunnion against solid particles intrusion.
  • Clearance control to consider high/low temperature shrinkages.
  • Self-cleaning closure member.

Specifications

Brand

Actuated (Standard & High Temperature)

  • Electric-Pneumatic-Hydraulic Actuators

Manual (Standard & High Temperature)

  • Manual Gear

Pressure Class Range

  • Class 150 to 2500
  • PN 10 to 320

Size Range

  • DN 25 to 600
  • NPS 1 to 24
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