Modular DBB Ball Valve
We are a professional ball valve manufacturer in P. R. China.
Design Standards: API 6D, API 608, ISO 17292, BS 5351
Size Range: 1/4 - 60 Inches.
Pressure Range: Class 150 - 2500 LB, 10000 PSI (API 6A Products)
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti.
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Structures: End Entry, Top Entry (easy for online maintenance)
Body Types: 2pc split body, 3pcs split body
Body & Bonnet Connection: Bolted Bonnet, Full Welded Bonnet (for Hazardous service need longer working life with less leakage point)
Design Standards: API 6D, API 608, ISO 17292, BS 5351
Size Range: 1/4 - 60 Inches.
Pressure Range: Class 150 - 2500 LB, 10000 PSI (API 6A Products)
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti.
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Structures: End Entry, Top Entry (easy for online maintenance)
Body Types: 2pc split body, 3pcs split body
Body & Bonnet Connection: Bolted Bonnet, Full Welded Bonnet (for Hazardous service need longer working life with less leakage point)
Trunnion Mounted Ball Valve (2387)
We are one of the best professional trunnion-mounted ball valve manufacturers in China.
Design Standards: API 6D, API 608, ISO 17292, BS 5351
Size Range: 1/4 - 60 Inch
Pressure Range: Class 150-2500 LB, 10000 PSI (API 6A Products)
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Structures: End Entry, Top Entry (easy for on-line maintenance)
Body Types: 2pc split body, 3pcs split body
Body&Bonnet Connection: Bolted Bonnet, Full Welded Bonnet (for Hazardous service need longer working life with less leakage point)
Design Standards: API 6D, API 608, ISO 17292, BS 5351
Size Range: 1/4 - 60 Inch
Pressure Range: Class 150-2500 LB, 10000 PSI (API 6A Products)
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Structures: End Entry, Top Entry (easy for on-line maintenance)
Body Types: 2pc split body, 3pcs split body
Body&Bonnet Connection: Bolted Bonnet, Full Welded Bonnet (for Hazardous service need longer working life with less leakage point)
Floating Ball Valve (80)
We are a professional manufacturer of floating ball valves in China.
Design Standards: API 6D, API 608, ISO 17292, BS 5351
Size Range: 1/4 - 10 Inch
Pressure Range: Class 150-2500 LB
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Types: 1 pc body, 2pc split body, 3pcs split body
Body&Bonnet Connection: Bolted Bonnet, Threaded Bonnet
Design Standards: API 6D, API 608, ISO 17292, BS 5351
Size Range: 1/4 - 10 Inch
Pressure Range: Class 150-2500 LB
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Types: 1 pc body, 2pc split body, 3pcs split body
Body&Bonnet Connection: Bolted Bonnet, Threaded Bonnet
Modular DBB Ball Valve (131)
Specializing in modular DBB ball valve production, we have become a well-known Chinese manufacturer.
Design Standards: API 6D
Size Range: 2 - 24 Inch
Pressure Range: Class 150-2500 LB, 10000 PSI (API 6A Products)
Material Range: Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel
End Connections: Flanged (FF, RF, RTJ)-ASME B16.5 or B16.47, Butt Weld (BW)-ASME B16.25, HUB
Face to Face: Manufacturer Standard
Design Standards: API 6D
Size Range: 2 - 24 Inch
Pressure Range: Class 150-2500 LB, 10000 PSI (API 6A Products)
Material Range: Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel
End Connections: Flanged (FF, RF, RTJ)-ASME B16.5 or B16.47, Butt Weld (BW)-ASME B16.25, HUB
Face to Face: Manufacturer Standard
Why Choose Our Ball Valves
Tight Shut Off & Low Emission
Several unique design features, excellent sealing materials and a strong body make the valve an excellent choice for shut-off with Zero Leakage under pipeline pressure.
Super Fire Safe Design
Excellent material of graphite, O-ring, gasket and advanced sealing structure are applied to make the valve with reliable sealing even after the fire.
Anti Blow-out Stem&Anti-Static
An Independent stem and integral shoulder can prevent the stem from blow-out and ensure the safety of the operator. The anti-static device on the ball&stem makes the valve free from sparking.
Fully Customizable Design
Trunnion/Floating, DBB/DIB, Soft/Metal and different materials are available. The valve design is fully customizable to meet customers' project specifications.
Trunnion Mounted Ball Valve
Design Standards: API 6D, API 608, ISO 17292, BS 5351
Size Range: 1/4 - 60 Inch
Pressure Range: Class 150-2500 LB, 10000 PSI (API 6A Products)
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Structures: End Entry, Top Entry (easy for online maintenance)
Body Types: 2pc split body, 3pcs split body
Body&Bonnet Connection: Bolted Bonnet, Full Welded Bonnet (for Hazardous service need longer working life with less leakage point)
Request a quoteSize Range: 1/4 - 60 Inch
Pressure Range: Class 150-2500 LB, 10000 PSI (API 6A Products)
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Structures: End Entry, Top Entry (easy for online maintenance)
Body Types: 2pc split body, 3pcs split body
Body&Bonnet Connection: Bolted Bonnet, Full Welded Bonnet (for Hazardous service need longer working life with less leakage point)
Floating Ball Valve
Design Standards: API 6D, API 608, ISO 17292, BS 5351
Size Range: 1/4 - 10 Inch
Pressure Range: Class 150-2500 LB
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Types: 1 pc body, 2pc split body, 3pcs split body
Body&Bonnet Connection: Bolted Bonnet, Threaded Bonnet
Request a quoteSize Range: 1/4 - 10 Inch
Pressure Range: Class 150-2500 LB
Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti
End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB
Body Types: 1 pc body, 2pc split body, 3pcs split body
Body&Bonnet Connection: Bolted Bonnet, Threaded Bonnet
Modular Double Block and Bleed Ball Valve (Double Ball)
Design Standards: API 6D
Size Range: 2 - 24 Inch
Pressure Range: Class 150-2500 LB, 10000 PSI (API 6A Products)
Material Range: Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel
End Connections:
Flanged (FF, RF, RTJ): ASME B16.5 or ASME B16.47
Butt Weld (BW): ASME B16.25
HUB
Face to Face: Manufacturer Standard
Request a quoteSize Range: 2 - 24 Inch
Pressure Range: Class 150-2500 LB, 10000 PSI (API 6A Products)
Material Range: Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel
End Connections:
Flanged (FF, RF, RTJ): ASME B16.5 or ASME B16.47
Butt Weld (BW): ASME B16.25
HUB
Face to Face: Manufacturer Standard
Seat Structures
DBB-Double Block and Bleed: Single valve with two seating surfaces that, in the closed position, provides a seal against pressure from both ends of the valve with a means of venting/bleeding the cavity between the seating surfaces. The single piston effect is the standard design for trunnion-mounted ball valves. Pressure from both the upstream and downstream sides pushes the seat rings against the ball. If the force created by the body cavity pressure is greater than the preloaded spring force plus the force created by the pressure from the upstream or downstream side, the seats are pushed away from the ball. Thus, any overpressure in the body cavity is released automatically in the valves' fully open or fully closed position.
DIB-Double Insolation and bleed: Single valve with two seating surfaces, each of which, in the closed position, provides a seal against pressure from a single source, with a means of venting/bleeding the cavity between the seating surfaces. Double piston effect seats are pressure energized in both directions. So the seat rings are always pushed against the ball by the pressure from upstream/downstream or from the cavity. If the upstream seat fails, the downstream seat can still ensure a tight seal.
DIB-Double Insolation and bleed: Single valve with two seating surfaces, each of which, in the closed position, provides a seal against pressure from a single source, with a means of venting/bleeding the cavity between the seating surfaces. Double piston effect seats are pressure energized in both directions. So the seat rings are always pushed against the ball by the pressure from upstream/downstream or from the cavity. If the upstream seat fails, the downstream seat can still ensure a tight seal.
Fire Safe: Internal leakage prevention
Fire Safe Standards: API 607, API 6FA, ISO 10497
Fire-safe design for soft seat ball valves.
Fire-safe design for soft seat ball valves.
Fire Safe: External leakage prevention
Before Fire & After Fire
Metal-to-metal contact
Seat fire-safe packing
With seat springs and O-rings
Metal-to-metal contact
Seat fire-safe packing
With seat springs and O-rings
Anti-blowout Stem& Anti-static Device
The stem is made separately from the ball. The lower end of the stem is designed with an integral shoulder to be blowout-proof.
The electrical continuity of the ball, stem, and body is ensured by the device(spring and ball) to avoid dangerous sparking during the operation.
The electrical continuity of the ball, stem, and body is ensured by the device(spring and ball) to avoid dangerous sparking during the operation.
Emergency Sealant Injection System
In an emergency case, when the sealing materials(soft seat or the stem o-ring) fail to work, the seat and stem leakage can be prevented by injecting sealant into these injection fittings, it will be installed on the stem and seat according to the ball valve sizes.
Related Tables and Parameter Information
Mechanical Properties of Soft Seat Materials
For more information, please check the contents below.
Request a quotePressure/Temperature Rating of Soft Seat Materials
For more information, please check the contents below.
Request a quoteMOST QUALITY Ball Valves FOR YOU
A ball valve is mainly used in the pipeline for shut-off and control applications. It is one kind of quarter-turn valve, it's open when the ball's hole is in line with the flow inlet and closed when it is 90 degrees rotated by the valve handle, blocking the flow. And can usually be lockable at a different position to control the fluid. It's durable, easy operation/repair and has good sealing performance even after a long disuse. All these advantages make it with extensive industrial use like oil&gas, chemicals, pipelines, water treatment, and mining. The ball valve is versatile as there are many different choices of ball valve types available to select according to the working condition.
If you need any support with our Ball Valves, pls contact us!
Request a quoteIf you need any support with our Ball Valves, pls contact us!
Related Products
Floating Ball Valve
API 608 Floating Ball Valve, 1 Inch, 800 LB, SW + NPT, A105
Trunnion Mounted Ball Valve
API 6D Trunnion Ball Valve, 6 Inch, 2500 LB, A105N, RTJ
Bore Types:
Full Bore: The hole of the ball is the same size as the pipe
Reduced Bore: The hole of the ball is with smaller size than the pipe
Port Types: T port, V port, 2-way, 3-way T type and 3-way L type
Seat types: Soft Seat, Metal Seat
Sealing Types: O-ring, Lip Seal
Lipseal is the spring-energized seal including Elgiloy or Inconel spring and
PTFE jacket. It’s effective in a wide range of applications, such as high
resistance to corrosive chemical media, high sour gas, low temperature or cryogenic service.
Full Bore: The hole of the ball is the same size as the pipe
Reduced Bore: The hole of the ball is with smaller size than the pipe
Port Types: T port, V port, 2-way, 3-way T type and 3-way L type
Seat types: Soft Seat, Metal Seat
Sealing Types: O-ring, Lip Seal
Lipseal is the spring-energized seal including Elgiloy or Inconel spring and
PTFE jacket. It’s effective in a wide range of applications, such as high
resistance to corrosive chemical media, high sour gas, low temperature or cryogenic service.
 | End Connections: Flanged (FF, RF, RTJ), Socket Weld (SW), Threaded (NPT, BSP), Butt Weld (BW), HUB Size Range: 1/4”~60” Pressure Range: 150LB~2500LB, 10000PSI (API 6A Products) Material Range: Cast Steel, Forged Steel, Carbon Steel, Stainless Steel, Alloy Steel, Bronze, Ti |
| Mechanical Properties of Soft Seat Materials | Pressure/Temperature Rating of Soft Seat Materials |
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About Us
Founded in 2013, Bosseal is a professional industrial valve manufacturer based in Suzhou, China. We specialize in the design and production of Ball Valves, Gate Valves, Globe Valves, Check Valves, Butterfly Valves, Plug Valves, and Piping Strainers. All our products are manufactured in strict compliance with international standards, including API, ASME, ISO, DIN, BS, and EN. With a strong focus on quality control and engineering capability, we are committed to providing reliable and high-performance valve solutions for global industrial applications.
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Building 2, NO.59, Songshan Road, SND, Suzhou, China