Ball Valve - Type 29000 | Ibor Valves

Ibor Type 29000 Ball Valve

The Ibor 29000 is a 2-way ball valve used for industrial flow isolation in liquid, gas, steam, hydrocarbon and utility systems. The DIB seat arrangement defines how the valve seals against line pressure and how pressure trapped in the ball cavity is managed.

Seat Design and Sealing Logic

• DIB I: double piston effect on both upstream and downstream seats. Both seats can seal against pressure from either side of the seat.
• DIB II: double piston effect on the downstream seat and single piston effect on the upstream seat. Used where cavity pressure relief philosophy differs between the two seats.
• Seat sealing injector: allows emergency or maintenance injection of sealant to support seat tightness when permitted by the service conditions.

Stem, Maintenance and Body Options

• Stem sealing injector for leakage mitigation at the stem packing area.
• Stem or bonnet extension for buried service, insulation clearance or access from platforms.
• Locking device for controlled valve position and site safety procedures.
• Weld overlay on the seat area or all wetted parts for erosion, corrosion or sour-service compatibility, subject to material selection.
• Heating or cooling jacket for media requiring temperature control, such as viscous fluids, crystallizing products or thermal-sensitive process streams.

End Connections and Standards

• Flanged ends: ASME B16.5, GOST 12815-80 or EN 1092-1.
• Socket weld ends: ASME B16.11.
• Butt weld ends: ASME B16.25.
• NPT threaded ends: ASME B1.20.1.
• BSPP or BSPT threaded ends: BS 21.

Typical Applications and Suitable Media

Used in chemical, petrochemical, power generation and general process plants for isolation of hydrocarbons, process gases, steam, water, condensate, nitrogen, compressed air and utility fluids. Final suitability depends on body material, seat material, sealing compound, pressure class, operating temperature and corrosion allowance.

Operational Selection Notes

• Select pressure class according to the piping specification and applicable ASME, EN or GOST rating table.
• Check seat material against operating temperature, differential pressure and media compatibility.
• For thermal expansion or trapped liquid service, verify cavity pressure relief requirements before selecting DIB I or DIB II.
• Specify fire-safe, antistatic, NACE/ISO 15156 or EN 10204 documentation only where required by the project specification.

Actuation Options

• Manual lever for small sizes and low operating torque.
• Gear operator for larger sizes or higher differential pressure.
• Pneumatic, electric or hydraulic actuator for remote operation, ESD duty or process interlock systems.

FAQ

When is DIB I preferred? When the isolation philosophy requires active sealing from both sides of the body cavity.

When is DIB II selected? When the system requires different upstream and downstream seat behaviour, typically to address cavity pressure management.

Can the valve be used on steam? Yes, if the selected trim, seats, seals and pressure class are suitable for the specified steam pressure and temperature.