Integral DBB Ball Valve
Integral DBB Ball Valve is selected for compact process or pipeline isolation where two blocks and a bleed are integrated into one pressure-containing body. An integral DBB ball valve combines the isolation and bleed functions into a single valve body. The design can reduce installed length, flange joints and piping components compared with a conventional arrangement of separate block and bleed valves. Bore, seat direction and bleed connection are defined by the project.
Integral DBB Ball Valve for industrial valve projects.
An integral DBB ball valve combines the isolation and bleed functions into a single valve body. The design can reduce installed length, flange joints and piping components compared with a conventional arrangement of separate block and bleed valves. Bore, seat direction and bleed connection are defined by the project.
When to select this design
Compact process or pipeline isolation where two blocks and a bleed are integrated into one pressure-containing body.
Choose integral DBB when space, weight and reduction of external joints are the primary objectives.
Typical applications
- Metering skids
- Process isolation
- Pipeline stations
- Compact modular piping
Integral DBB Ball Valve: design points to confirm.
This is a specific valve construction. Final size, class, material and seat combinations depend on the approved datasheet and design calculation.
| Body construction | Two isolation functions and a bleed connection are integrated into one compact pressure-containing body. The arrangement is intended to replace multiple valves and fittings where space and leak-path reduction are important. |
|---|---|
| Seat & sealing | Seat direction and cavity communication must match the intended DBB philosophy. The designer should define whether both blocks seal from the same side, how cavity pressure is relieved and how the bleed port is arranged. |
| End connection | Flanged, butt-weld or compact connections can be used depending on size and service. Face-to-face and bleed outlet orientation are important layout inputs. |
| Engineering focus | Confirm the isolation philosophy before selecting a compact DBB. A small face-to-face is useful only if drain/bleed access, actuator clearance and maintenance remain practical. |
| Material selection | Body and trim materials follow the process piping class. Compact construction can make internal material selection and sealing details more critical because multiple functions share one body. |
| Testing & inspection | Define how each block seat and the bleed cavity will be pressure tested and witnessed. Fire-safe/emission, NDE/PMI and documentation requirements should be written into the ITP. |
Engineering considerations for Integral DBB Ball Valve.
Construction and maintenance
Two isolation functions and a bleed connection are integrated into one compact pressure-containing body. The arrangement is intended to replace multiple valves and fittings where space and leak-path reduction are important.
Seat, sealing and torque
Seat direction and cavity communication must match the intended DBB philosophy. The designer should define whether both blocks seal from the same side, how cavity pressure is relieved and how the bleed port is arranged.
Piping and installation
Flanged, butt-weld or compact connections can be used depending on size and service. Face-to-face and bleed outlet orientation are important layout inputs.
What to verify before approving the technical offer.
Engineering risk
Confirm the isolation philosophy before selecting a compact DBB. A small face-to-face is useful only if drain/bleed access, actuator clearance and maintenance remain practical.
Materials and traceability
Body and trim materials follow the process piping class. Compact construction can make internal material selection and sealing details more critical because multiple functions share one body.
Inspection and testing
Define how each block seat and the bleed cavity will be pressure tested and witnessed. Fire-safe/emission, NDE/PMI and documentation requirements should be written into the ITP.
Send the valve datasheet together with the piping class and project valve, material, testing and coating specifications. Missing design inputs should be clarified rather than assumed.
Other Double Block & Bleed Valves configurations.
Compare related designs by construction, pressure class, temperature range and service conditions.
Choose double-ball DBB when the isolation philosophy specifically calls for two separate ball closure elements.
Compare Double Ball DBB Valve →Choose trunnion DBB when size or pressure requires trunnion support and the project also requires double isolation and bleed.
Compare Trunnion DBB Ball Valve →Choose instrument DBB when the isolation duty is for small-bore instrument connections rather than the main pipeline.
Compare Instrument DBB Valve →Return to the Double Block & Bleed Valves range to compare all configurations.
Back to Double Block & Bleed Valves Range →Continue the technical selection.
Use these pages to check pressure class, material, standard and end-connection requirements against this valve design.
Integral DBB Ball Valve FAQ
What is a integral DBB ball valve?
An integral DBB ball valve combines the isolation and bleed functions into a single valve body. The design can reduce installed length, flange joints and piping components compared with a conventional arrangement of separate block and bleed valves. Bore, seat direction and bleed connection are defined by the project.
Where is a integral DBB ball valve commonly used?
Typical applications include Metering skids, Process isolation, Pipeline stations, Compact modular piping. Final suitability depends on the actual service medium, pressure, temperature and project specification.
What information is needed to quote a integral DBB ball valve?
Provide size, quantity, pressure class, body and trim materials, seat material, end connection, design pressure and temperature, media, operation, design standard, fire-safe/emission requirements, testing, coating and documentation scope.
How is a integral DBB ball valve different from other double block and bleed valve designs?
Choose integral DBB when space, weight and reduction of external joints are the primary objectives.
Technical documents for project review.
For technical evaluation, request the applicable product documents and inspection records for the offered valve configuration.
Product Photos
Additional finished-valve, nameplate and component photos are available for the selected valve configuration.
GA Drawing / Datasheet
GA drawings and datasheets are prepared for the selected size, pressure class and valve configuration.
Testing & Inspection Records
Inspection documentation can include pressure testing, dimensional inspection, PMI, NDE/NDT and coating records as required by the project.