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High-Pressure DBB Trunnion-Mounted Ball Valve 2500/6000 PSI - China Factory Suppliers for Reliable Performance
Maximum Safety & Leak Prevention
Double-Block-and-Bleed (DBB), Emergency Sealing Device, Anti-Static, Fire-Safe (API 607 / API 6FA), and Blow-Out Proof Stem ensure safe operation under extreme high-pressure and flammable conditions.
Reliable Seat Sealing
Advanced seat sealing structure provides leak-free performance under high pressure, supporting both single and double sealing designs for additional safety.
Extreme Pressure & Temperature Capability
Trunnion-mounted forged design ensures stable operation under pressures up to Class 2500 / 6000 PSI and temperatures from -196℃ to 450℃ (material dependent).
Durable & Corrosion-Resistant
Constructed from high-quality forged steel and corrosion-resistant alloys, capable of withstanding sulfide stress cracking and harsh industrial environments.
Flexible & Easy Integration
Supports manual, worm gear, electric, or pneumatic actuation. Optional ISO 5211 direct mounting, locking device, stem extension, and side/top-entry assembly enable seamless installation and actuator compatibility.
Versatile Port Options
Available in Full Bore or Reduced Bore designs to optimize system flow and reduce pressure drop according to process requirements.
Customizable Options
Wide range of sizes, body materials (A694F52, A694F60, A694F65, A182F6A, A182F316, A182F347, 17-4PH, A182F44, A182 F51, A182 F53, Inconel 625, Incoloy 800, Hastelloy C, etc.), end connections, actuation types, and sealing options can be tailored to meet project-specific requirements.
Proven Industrial Applications
Ideal for Oil & Gas, Chemical & Petrochemical, Power Generation, Offshore & Deepwater, Aerospace & Military, Water Treatment, and Metallurgical applications. Trusted in critical high-pressure systems worldwide.
Frequently Asked Questions
QWhat is a Double-Block-and-Bleed (DBB) ball valve and why is it important?
A DBB ball valve provides two independent seating surfaces that both seal against pressure simultaneously, with a bleed port between them to verify isolation or vent trapped pressure. This design is critical in oil & gas and chemical applications where zero leakage and positive isolation are required for safety and maintenance.
QWhat pressure and temperature ranges can trunnion-mounted ball valves handle?
Trunnion-mounted forged ball valves can operate under pressures up to Class 2500 / 6000 PSI and across a temperature range of -196℃ to 450℃, depending on the body material selected. Cryogenic-grade materials extend performance to the lowest end of this range.
QWhat body materials are available for corrosive or high-temperature environments?
A broad selection of materials is offered, including A694F52/F60/F65, A182F6A, A182F316, A182F347, 17-4PH, A182F44, A182 F51, A182 F53, Inconel 625, Incoloy 800, and Hastelloy C. These alloys provide resistance to sulfide stress cracking, high-temperature oxidation, and aggressive chemical media.
QWhat actuation options are compatible with these ball valves?
The valves support manual handwheel, worm gear, electric actuator, and pneumatic actuator configurations. ISO 5211 direct mounting pads are available as an option, making it straightforward to retrofit or specify automation without additional adapters.
QWhat is the difference between Full Bore and Reduced Bore designs?
A Full Bore valve has a ball port diameter equal to the pipe inner diameter, resulting in minimal flow restriction and pressure drop — preferred for pigging operations or flow-critical services. A Reduced Bore valve uses a smaller ball port to reduce valve size and weight, which can lower cost while still meeting most standard flow requirements.
QWhich industry standards do these valves comply with?
These valves are designed and tested in accordance with API 607 and API 6FA for fire-safe performance, as well as relevant ASME, NACE MR0175, and ISO standards. Compliance documentation and third-party test certificates are available upon request to support project qualification requirements.