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Our High Pressure DBB Ball Valve (Double Block and Bleed Ball Valve) is a high-performance industrial flow control valve purpose-engineered for high-pressure, harsh working conditions across critical industrial sectors. Manufactured in strict accordance with API 608 design standards, this valve integrates dual block and bleed functionality, enabling independent control of two separate fluid streams through its dual connection ports, solving the pain points of traditional single-seat ball valves that cannot achieve simultaneous dual isolation, online testing and pressure relief. It is compatible with global flange standards including ASME B16.5, JIS B2220 and DIN2633, with face-to-face dimensions conforming to ASME B16.10, JIS B2002 and BS EN558-1, and all products pass rigorous inspection and testing in line with API598 specifications. Available in sizes from 4” to 16”, with pressure ratings covering 150LB to 600LB and an operating temperature range of -20℃ to 200℃, this stainless steel DBB valve features a full-bore design and ISO5211 mounting pad, compatible with various manual and automated actuators, delivering safe, precise and reliable flow control for high-pressure industrial systems.
Our High Pressure DBB Ball Valve is widely used in high-demand industrial sectors, with core applications including oil and gas upstream, midstream and downstream operations (for isolation and control in gathering pipelines, pump stations, storage tanks and refining systems), petrochemical and chemical manufacturing process pipelines, power generation plant steam and water systems, large industrial HVAC and refrigeration systems, and high-pressure water treatment and desalination plants. It is the preferred flow control solution for petrochemical enterprise operators, power plant engineering teams, oil and gas project contractors and industrial automation integrators that demand high safety, precision control and long-term reliability in high-pressure working conditions.
46 | Needle Valve | 316S.S. |
45 | Rivet | 316S.S. |
44 | Nameplate | 316S.S. |
43 | Nut | 8 |
42 | Bolt | B8 |
41 | Pin | 410 |
40 | Gear | Assembly |
39 | Antistatic Ball | 316S.S. |
38 | Antistatic Spring | 316S.S. |
37 | Antistatic Spring | 316S.S. |
36 | Seat Spring | Inconel X-750 |
35 | Plug | 316S.S. |
34 | Vent Valve | 316S.S. |
31 | In Jection Fitting | 316S.S. |
30 | Pin | 410 |
29 | Key | 410 |
28 | Bearing | S.S+PTFE |
27 | Bearing | S.S+PTFE |
26 | Thrust Washer | PTFE |
25 | Thrust Washer | PTFE |
24 | Gasket | PTFE |
23 | Gasket | PTFE |
22 | Gasket | PTFE |
21 | Gasket | PTFE |
20 | Gasket | PTFE |
19 | O-ring | VITON |
18 | O-ring | VITON |
17 | O-ring | VITON |
16 | O-ring | VITON |
15 | O-ring | VITON |
14 | Screw | B8 |
13 | Screw | B8 |
12 | Screw | B8 |
11 | Nut | 8 |
10 | Bolt | B8 |
9 | Mounting Plate | F304 |
8 | Bonnet | F304 |
7 | Trunnion | F51 |
6 | Steam | F51 |
5 | Seat Insert | PTFE |
4 | Seat Retainer | F316 |
3 | Ball | F316 |
2 | Apapter | F304 |
1 | Body | F304 |
NO. | Part Name | Material |
ASME 150LB | ||||||||
NPS | D | L | G | J | T | F | M | N |
4" | 102 | 420 | 229 | 190.5 | 22.4 | 1.5 | 8 | 19 |
6" | 152 | 720 | 279 | 241.3 | 26 | 1.5 | 8 | 22 |
8" | 203 | 830 | 343 | 298.4 | 29 | 1.5 | 8 | 22 |
10" | 254 | 945 | 406 | 362 | 31 | 1.5 | 12 | 25 |
12" | 305 | 1090 | 483 | 431.8 | 30.2 | 1.5 | 12 | 25 |
14" | 337 | 1210 | 533 | 476.2 | 33.3 | 1.5 | 12 | 29 |
16" | 387 | 1350 | 597 | 539.8 | 35.1 | 1.5 | 16 | 29 |
The core advantage of our Double Block and Bleed Ball Valve lies in its innovative dual block and bleed structure, which achieves upstream and downstream dual isolation through two independent valve seats, with a venting port in the middle cavity for online sealing performance testing and medium pressure relief. This design greatly reduces the risk of medium leakage in high-pressure working conditions, especially for flammable, explosive and toxic media, providing maximum protection for on-site operators and the entire pipeline system, and meeting the strict safety requirements of high-risk industrial projects.
This high pressure ball valve is constructed with premium F304/F316 stainless steel for the main body and bonnet, F51 duplex stainless steel for the stem and trunnion, PTFE and VITON for sealing elements, and Inconel X-750 for seat springs. This material combination delivers exceptional corrosion resistance, wear resistance and high-temperature stability, adapting to harsh chemical media and extreme high-pressure working conditions. It effectively reduces maintenance frequency and replacement costs, extending the continuous operation time of equipment and improving the overall operational efficiency of industrial facilities.
Featuring a full-bore structure, our full bore DBB ball valve minimizes flow resistance and fluid pressure loss, improving medium transmission efficiency and reducing long-term energy consumption for industrial operators. The 90-degree rotary opening and closing operation is simple and efficient, enabling precise flow regulation, while the ISO5211 mounting pad allows quick and easy installation of electric and pneumatic actuators, perfectly adapting to industrial automation control systems and meeting the precise regulation needs of complex process pipelines.
This valve is equipped with a full set of industry-leading safety features, including a blowout-proof stem design, anti-static device, and locking device to prevent misoperation. All designs strictly comply with international industrial safety specifications, ensuring stable and reliable operation even under continuous high-pressure working conditions, and reducing unplanned downtime for petrochemical plants, power generation facilities and oil and gas operators.

The DBB Ball Valve is widely used in a range of industries, offering versatility in fluid control. From oil and gas pipelines to power plants, HVAC systems, and water treatment facilities, the DBB Ball Valve is designed to handle a variety of media, including water, oil, steam, and gases. Its adaptability allows it to meet the diverse needs of different industrial sectors, making it an essential component in maintaining efficient and safe operations.
Safety is paramount in any industrial operation, and the DBB Ball Valve addresses this with advanced safety features such as blow-out prevention and double isolation. These mechanisms reduce the likelihood of leakage or accidental discharge, ensuring the protection of both the system and the surrounding environment. This makes the DBB Ball Valve particularly reliable for critical applications where safety is a top priority, such as in chemical processing plants or energy production facilities.
Thanks to its design, the DBB Ball Valve helps improve energy efficiency by ensuring optimal fluid flow and pressure control. This results in better system performance and reduced energy consumption, leading to cost savings. The ability to regulate flow efficiently is especially important in energy-intensive industries like power plants and HVAC systems, where minimizing operational costs while maintaining reliable performance is key to staying competitive.
The DBB Ball Valve combines durability, precision, and safety, making it an essential tool in industries that demand high performance and reliability. Its ability to handle different media, provide safe operation, and ensure long-lasting performance makes it a top choice for critical applications across various sectors.
Our High Pressure DBB Ball Valve is designed and manufactured in strict accordance with API 608 and API 6D international industrial valve standards, with end flanges conforming to ASME B16.5, JIS B2220 and DIN2633 specifications, face-to-face dimensions meeting ASME B16.10, JIS B2002 and BS EN558-1 requirements, and all products undergo rigorous performance and sealing tests in line with API598 standards, ensuring compliance with the access requirements of high-end industrial projects worldwide.
Compared with traditional single-seat ball valves, our Double Block and Bleed Ball Valve integrates dual seat isolation and middle cavity venting functions, achieving simultaneous upstream and downstream dual isolation, online sealing testing and medium pressure relief, which greatly improves operational safety in high-pressure conditions. Its full-bore design reduces flow resistance and supports pigging operations, while the ISO5211 mounting pad enables quick actuator adaptation, reducing the number of valves required in the pipeline system and lowering overall project investment and maintenance costs.
This high pressure ball valve is available in a full size range from 4” to 16”, with pressure ratings covering 150LB to 600LB, and an operating temperature range of -20℃ to 200℃. It can stably handle a wide range of media including water, oil, gas, steam and corrosive chemical media. Customized material, pressure rating and actuator matching solutions are available to meet the personalized needs of different industrial projects.