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    Forged DBB Trunnion-Mounted Ball Valve.jpg

    Class 2500 / 6000 PSI Forged DBB Trunnion-Mounted Ball Valve

    ● Maximum Safety with Double-Block-and-Bleed (DBB) and Emergency Sealing Device

    ● Extreme Pressure Stability with Trunnion-Mounted Forged Design

    ● Leak-Free Performance with Reliable Seat Sealing under High Pressure

    ● Superior Protection with Anti-Static, Fire-Safe (API 607), and Anti-Blowout Stem

    ● Sour Service Reliability with NACE-Compliant Materials

    ● Unmatched Durability with Corrosion Resistance and ISO 5211 Direct Mounting

    ● Tailored for Your Project: Materials, Sizes, Connections, Actuation, and Sealing Options

      Contact us

      Product Parameters

      Size 2" to 30" (DN50–DN750)
      Pressure Class 2500 (2500 LB / PN 420 /6000 PSI)
      Operating Temperature -196℃ to 450℃(Material Dependent) 
      Ball Type Trunnion-mounted, 2-3 Piece Body
      Assembly Method Side Entry / Top Entry
      Sealing Design Double-Block-and-Bleed (DBB)
      End Connection Flanged (RF / RTJ)
      Operation Types Handle, Worm Gear, Electric, Pneumatic
      Mounting ISO 5211 direct mounting available
      Body Materials ASTM A694 F52 / F60 / F65, ASTM A182 F6A, F316, F347, 17-4PH, ASTM A182 F44 / F51 / F53, Inconel 625, Incoloy 800, Hastelloy C, etc.
      Seat Materials PEEK, PCTFE (KEL-F), Devlon V-API, Hard-seat
      Design & Manufacturing Standards API 6D, BS 5351, MESC SPET 7/200, ASME B16.34
      Fire-Safe Design Designed in accordance with API 607 / API 6FA
      Application Field Oil & Gas, Chemical & Petrochemical, Power Generation, Offshore & Deepwater, Aerospace & Military, Water Treatment & Supply, Metallurgical & Mining
      Brand SLVCN
      Key Features
      Product Description
      Parts List
      Technical Specifications

      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.

      Product Details

      Designed for demanding high-pressure applications, the SLVCN Class 2500 / 6000 PSI forged trunnion-mounted ball valve features a Double-Block-and-Bleed (DBB) design with an emergency sealing device for maximum safety and leak prevention. Built from robust materials—including stainless steels, nickel alloys, and high-performance seats—it ensures reliable performance in sour service and harsh environments.

      The valve supports manual, worm gear, electric, and pneumatic actuation, with ISO 5211 direct mounting for seamless automation. Available in various sizes, body materials, and end connections, it can be tailored to meet your project-specific requirements. Suitable for Oil & Gas, Chemical, Power Generation, Offshore, Aerospace, Water Treatment, and Metallurgical applications.

      Engineered and manufactured to API 6D, BS 5351, MESC SPET 7/200, and ASME B16.34 standards, with fire-safe construction designed per API 607 / API 6FA.

      Ball Valve

      Parts List

      Parts List
      1 Right Body 11 Lip Seal 21 Stud 31 Thrust Washer
      2 Nut 12 Bolt 22 Gland 32 Stem Bearing
      3 Pin 13 Seat Pressure Ring 23 Packing Ring 33 Thrust Bearing
      4 Gasket 14 Seat 24 Packing 34 Stem Bearing
      5 Spring 15 Ball 25 Packing pad 35 Trunnion Support
      6 Stud 16 Worm-Gear 26 Drip Tray 36 Body
      7 Thrust Washer 17 Key 27 Packing Box 37 Drain Valve
      8 Lip Seal 18 Bolt 28 Nut
      9 Lip Seal 19 Stud 29 Stud
      10 Seat Retainer 20 Nut 30 Stem

      Parts List

      Technical Specifications

      Dimensions: Class 2500 - Full Port

      Size Bore Side Entry Top Entry
      Face to Face D in/mm D1 in/mm Weight Face to Face D2 in/mm Weight
      NPS/DN B1 in/mm B2 in/mm RF in/mm RTJ in/mm BWE in/mm Model FF lb/kg Model FW lb/kg RF in/mm RTJ in/mm BWE in/mm Model FT lb/kg
      2" 1.69 1.69 17.75 17.88 17.75 9.3 AOR 234 AOR 17.75 17.88 17.75 9.3 276
      50 42 42 451 454 451 236 AOR 106 AOR 451 454 451 235 125
      3" 2.44 2.44 22.75 23 22.75 12 AOR 525 AOR 22.75 23 22.75 12.6 573
      80 62 62 578 584 578 306 AOR 238 AOR 578 584 578 319 260
      4" 3.44 3.44 26.5 26.88 26.5 14 AOR 844 AOR 26.5 26.88 26.5 14.3 1058
      100 87 87 673 683 673 356 AOR 383 AOR 673 683 673 364 480
      6 5.19 5.19 36 36.5 36 20.9 AOR 2381 AOR 36 36.5 36 19.1 2425
      150 131 131 914 927 914 530 AOR 1080 AOR 914 927 914 486 1100
      8" 7.06 7.06 40.25 40.88 40.25 26.8 AOR 3885 AOR 40.25 40.88 40.25 21.7 3527
      200 179 179 1022 1038 1022 680 AOR 1762 AOR 1022 1038 1022 550 1600
      10" 8.81 8.81 50 50.88 50 31.1 AOR 6808 AOR 50 50.88 50 26.6 6173
      250 223 223 1270 1292 1270 790 AOR 3088 AOR 1270 1292 1270 675 2800
      12" 10.44 10.44 56 56.88 56 34.6 AOR 9864 AOR 56 56.88 56 30.1 9921
      300 265 265 1422 1445 1422 880 AOR 4474 AOR 1422 1445 1422 765 4500

      Weight and dimensions for larger valve sizes up to 30" available on request

      Dimensions: Class 2500 - Reduced Port

      Size Bore Side Entry Top Entry
      Face to Face D in/mm D1 in/mm Weight Face to Face D2 in/mm Weight
      NPS/DN B1 in/mm B2 in/mm RF in/mm RTJ in/mm BWE in/mm Model FF lb/kg Model FW lb/kg RF in/mm RTJ in/mm BWE in/mm Model FT lb/kg
      2" 1.69 1.69 17.75 17.88 17.75 9.3 AOR 234 AOR 17.75 17.88 17.75 9.3 276
      50 42 42 451 454 451 236 AOR 106 AOR 451 454 451 235 125
      3" 2.44 2.44 22.75 23 22.75 12 AOR 525 AOR 22.75 23 22.75 12.6 573
      80 62 62 578 584 578 306 AOR 238 AOR 578 584 578 319 260
      4" 3.44 3.44 26.5 26.88 26.5 14 AOR 844 AOR 26.5 26.88 26.5 14.3 1058
      100 87 87 673 683 673 356 AOR 383 AOR 673 683 673 364 480
      6 5.19 5.19 36 36.5 36 20.9 AOR 2381 AOR 36 36.5 36 19.1 2425
      150 131 131 914 927 914 530 AOR 1080 AOR 914 927 914 486 1100
      8" 7.06 7.06 40.25 40.88 40.25 26.8 AOR 3885 AOR 40.25 40.88 40.25 21.7 3527
      200 179 179 1022 1038 1022 680 AOR 1762 AOR 1022 1038 1022 550 1600
      10" 8.81 8.81 50 50.88 50 31.1 AOR 6808 AOR 50 50.88 50 26.6 6173
      250 223 223 1270 1292 1270 790 AOR 3088 AOR 1270 1292 1270 675 2800
      12" 10.44 10.44 56 56.88 56 34.6 AOR 9864 AOR 56 56.88 56 30.1 9921
      300 265 265 1422 1445 1422 880 AOR 4474 AOR 1422 1445 1422 765 4500

      Weight and dimensions for larger valve sizes up to 30" available on request

      Read-more

      If you want to obtain the complete size, please contact us

      Contact us

      Why Choose Us

      advantage-1-1

      Decades of Expertise

      30+ years specializing in DBB, trunnion-mounted, forged & fully welded valves for high-temperature, high-pressure, and cryogenic service, trusted by projects worldwide.
      advantage-2
      advantage-1-1

      Tailored Solutions

      Custom-designed valves based on process conditions and project specifications, ensuring reliable performance under demanding operating conditions.
      advantage-2
      advantage-1-1

      Rigorous Quality Control

      ISO 9001-managed design, manufacturing, and testing in accordance with API 6D, ASME B16.34, and fire-safe standards.
      advantage-2
      advantage-1-1

      Proven Reliability

      Every valve is fully tested and inspected, delivering zero-leakage, project-ready valves you can trust.
      advantage-2

      How We Ensure Quality & Reliability?

      Quality is built into every stage - from raw material to final testing.

      Material Verification
      01

      Material Verification
      Dimensional Inspection
      02

      Dimensional Inspection
      Ultrasonic Flaw Detector
      03

      Ultrasonic Flaw Detection
      Hydrostatic Pressure Testing
      04

      Hydrostatic Pressure Testing
      CNC Machining Centers
      05

      CNC Machining Centers
      Fully Automated Welding Equipment-new
      06

      Fully Automated Welding Equipment
      Cryogenic Testing Area
      07

      Cryogenic Testing Area
      Pressure Testing Equipment
      08

      Pressure Testing Equipment

      Certificate Display

      SLVCN operates under an ISO 9001 quality management system. Products are supplied with CE conformity, Mill Test Certificates (MTC), and Certificates of Origin as required.

      Valves are designed, manufactured, and tested in accordance with API 6D, ASME B16.34, API 607, and ISO 10497 fire-safe standards, ensuring reliable performance in high-pressure and extreme service conditions.

      CE-New

      CE Certificate

      ISO9001-New(1)

      ISO9001 Certificate

      certificate 2

      Certificate for Credit for Quality Service

      certificate 3

      Certificate of Observing Contract and Keeping Promise

      certificate-New

      Trademark Certificate

      0102030405

      Applications

      Typical Media: Natural Gas, Crude Oil, Steam, Water, Chemical Fluids.

      Oil & Gas

      Oil & Gas

      Crude oil transmission, natural gas pipelines, upstream & downstream facilities, compressor stations.

      Chemical & Petrochemical

      Chemical & Petrochemical

      Corrosive media control, chemical processing lines, solvent and hydrocarbon transmission.

      Power Generation

      Power Generation

      Cooling water systems, steam auxiliary systems, fuel gas pipelines.

      Water Treatment & Supply

      Water Treatment & Supply

      Municipal water networks, RO systems, desalination plants, industrial water distribution.

      Refining & Processing Plants

      Refining & Processing Plants

      Hydrocarbon processing units, distillation systems, process isolation lines.

      Pipeline & Midstream Systems

      Pipeline & Midstream Systems

      Long-distance oil & gas transmission lines, valve stations, terminal facilities.

      Marine & Offshore

      Marine & Offshore

      Offshore platforms, FPSO systems, marine pipeline networks.

      General Industrial Pipeline Systems

      General Industrial Pipeline Systems

      Manufacturing plants, utility pipelines, general fluid control systems.  

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