DBB Ball Valves
A compact, heavy-duty double block-and-bleed (DBB) ball valve designed for surface oil, gas, and pipeline applications, providing dual isolation and a bleed port in a single robust body.
The ATV Surface DBB Ball Valve is a trunnion-mounted ball valve engineered to provide reliable bidirectional shutoff and safe cavity venting in a compact, efficient design. Built with either a forged or cast body and closure, the valve delivers double block-and-bleed functionality, offering two independent isolation barriers and a bleed port for pressurization checks or safe venting.
Available in both full-bore and reduced-bore configurations, it features redundant static and dynamic sealing options to maintain performance under extreme pressures and temperatures. The valve supports a wide selection of materials, end connections, and actuation systems, making it suitable for critical service in surface facilities, platforms, pipelines, and isolation systems. Optional metal seating, special coatings, extended bonnets, and full qualification to international standards allow customization for demanding industrial requirements.
Main Features
- Side Entry Design
- Forged or Cast Body and Closure
- Trunnion Mounted design
- Bi-Directional Sealing
- Full or Reduced Bore
- Spring Loaded Self-relieving
- Double Block and Bleed (DBB)
- Soft Seated
- Multiple redundant sealing configuration
- Static Sealing: Elastomeric, Thermoplastic or Metallic
- Dynamic Sealing: Elastomeric or Thermoplastic
- Anti static Device
- Anti blow‐out stem
- Fire Safe Design (API 607, API 6FA, ISO 10497)
- Bleed valve according to Customer needs
Options
- Customized size and design pressure according to Project requirements
- Top Entry Design
- Floating design available for lower pressure class and small dimensions
- Metal Seated
- Electroless Nickel Plating on Stainless Steel (standard feature on Carbon Steel or LT Carbon Steel Material) on pressure controlling parts
- Emergency Grease Injection points
- Extended Stem
- Extended Bonnet
- Available Design Validation: API 6A PR2F, ISO 15848-1, API 6D
- Client specific Type Approval or Design Validation test
- PED
- ATEX
- Overlay Cladding on Sealing Areas or all wetted parts
- Flushing ports / devices for cavity and sealing area
- Seat debris contamination preventers and/or dedicated scraper rings for bearing sliding areas
- Welded Pups / Transition pieces
- Painting according to Customer Specification
Benefit
- Compact envelope and weight
- Reduce Leak Path
Technical Data
API 6D, API 6A, ISO 14313, ISO 10423
API 6D:
2”- 24”
Class: # 150-2500
API 6A:
1 13/16” – 13 5/8”
From RWP Form 13.8 MPa (2.000PSI) to RWP 103.5 MPa (15.000PSI)
QSL 2, QSL3/3G, QSL4/4G
PSL-1, PSL-2, PSL-3, PSL-4
Main Components:
- Carbon steel
- Low temperature carbon steel
- Stainless austenitic steel and super-austenitic steel
- Stainless duplex and super-duplex
- Nickel superalloys (such as Monel, Inconel 625, Hastelloy)
- Titanium
NACE material available upon request
Norsok material available upon request
Hard Facing (Metal Seated):
- Tungsten Carbide Coating
- Chrome Carbide Coating
Seat insert (Soft Seated):
- Devlon
- Peek
- RPTFE
- PCTFE
- Nylon
- Handwheel/ Lever/ Manual gear
- Electric
- Hydraulic actuator (FAI, FC, FO)
- Pneumatic actuator (FAI, FC, FO)