Ball Valve - Type 39000 | Ibor Valves

Ibor Type 39000 Ball Valve

The Ibor 39000 is a 2-way industrial ball valve used for flow isolation in liquid and gas lines. The valve is intended for on/off service where cavity sealing, seat leakage control and maintainability are part of the valve selection criteria.

Seat Configuration

• DIB I: double piston effect on both downstream and upstream seats. Used where active sealing is required on both sides of the ball cavity.
• DIB II: double piston effect downstream and single piston effect upstream. Used where the upstream seat must allow pressure relief behaviour different from the downstream seat.
• Seat sealing injector: allows emergency or maintenance injection of sealant to reduce leakage across the seat area.

Stem, Maintenance and Body Options

• Stem sealing injector for leakage mitigation around the stem packing area.
• Stem or bonnet extension for insulated lines, buried service or hard-to-access installations.
• Locking device for positive valve position control during maintenance or commissioning.
• Overlay on the seat area or all wetted parts when erosion, corrosion or process compatibility requires upgraded surfaces.
• Heating or cooling jacket for media requiring temperature control, such as viscous fluids, waxy hydrocarbons or temperature-sensitive process streams.

End Connections and Standards

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

Operating Conditions and Media

Applicable service conditions depend on body material, pressure class, seat material, seal material and end connection. Final selection should verify pressure-temperature rating, corrosion allowance, fugitive emission requirements and compatibility with the process fluid.

• Typical media: steam, hot water, thermal oil, lubricating oil, hydrocarbons, fuel gas, process gases and plant utilities.
• Typical duties: isolation, block valve service, line sectionalizing, equipment isolation and maintenance bypass arrangements.

Actuation Options

• Manual lever or gearbox for local operation.
• Pneumatic, electric or hydraulic actuator when remote operation, ESD logic or process automation is required.
• Limit switches, solenoids and position feedback may be specified according to the control system architecture.

Variant Selection Logic

Select DIB I where the process requires sealing from both directions into the cavity. Select DIB II where the downstream seat must provide double piston sealing while the upstream side requires single piston pressure behaviour. For dirty, polymerising or critical fluids, consider sealing injectors and maintainability access.

FAQ

• Is this valve suitable for throttling? It is primarily an isolation valve. Continuous throttling should be checked against seat design, cavitation risk, velocity and erosion.
• Can it be used on steam? Yes, if pressure class, temperature rating and soft or metal seat materials are compatible with the steam conditions.
• What documents are normally requested? Material certificates, pressure test reports and applicable project certifications should be specified at procurement stage.