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China Suppliers Factory: Class 2500 / 6000 PSI Forged DBB Trunnion-Mounted Ball Valve for Maximum Safety and Durability
Key Features
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
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What does Double-Block-and-Bleed (DBB) mean, and why is it important?
Double-Block-and-Bleed (DBB) refers to a valve configuration that provides two separate seating surfaces that, when closed, isolate the valve cavity from both upstream and downstream pressure. A bleed port is then used to vent or monitor the trapped cavity. This design is critical for maintenance safety, pipeline isolation, and preventing leaks in high-pressure oil & gas and petrochemical systems.
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What pressure and temperature ranges can these trunnion-mounted ball valves handle?
The trunnion-mounted forged ball valves are designed to operate reliably under pressures up to Class 2500 / 6000 PSI and across a wide temperature range from -196℃ to 450℃, depending on the selected body material. This makes them suitable for cryogenic, ambient, and high-temperature process environments.
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What actuation options are available for these ball valves?
These valves support a wide range of actuation methods including manual handle operation, worm gear for larger sizes, electric actuators, and pneumatic actuators. Optional ISO 5211 direct mounting pads allow for seamless actuator integration, making them highly adaptable for automated process control systems.
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What materials are available for the valve body, and which is best for corrosive environments?
Available body materials include A694F52, A694F60, A694F65, A182F6A, A182F316, A182F347, 17-4PH, A182F44, A182 F51, A182 F53, Inconel 625, Incoloy 800, Hastelloy C, and more. For highly corrosive environments — such as those with H₂S, chlorides, or aggressive chemicals — Inconel 625, Hastelloy C, or duplex stainless steel grades (F51/F53) are generally recommended due to their superior corrosion and sulfide stress cracking resistance.
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What is the difference between Full Bore and Reduced Bore ball valves?
A Full Bore (Full Port) ball valve has an internal diameter equal to the pipe bore, allowing unrestricted flow with minimal pressure drop — ideal for applications where flow efficiency and pigging capability are critical. A Reduced Bore (Standard Port) valve has a smaller internal diameter, which results in a slight pressure drop but allows for a more compact and cost-effective design where maximum flow is not the primary requirement.
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Which industries are these valves certified and commonly used in?
These trunnion-mounted forged ball valves are Fire-Safe certified to API 607 and API 6FA standards and are widely used across Oil & Gas upstream/downstream, Chemical & Petrochemical, Power Generation, Offshore & Deepwater platforms, Aerospace & Military, Water Treatment, and Metallurgical industries. They are engineered to meet stringent international standards for critical high-pressure service applications worldwide.