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Rising Stem Ball Valve - RSBV
Brand: ValbartValbart 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