Plug Valves
Dual Seal Plug Valve DB&B API 6D
Dual Seal Plug Valve DB&B API 6D
Chemoil Advance Technology supplies Dual Seal Plug Valves with Double Block and Bleed (DBB) configuration from recognized manufacturers for reliable isolation in pipeline and process applications. These valves are designed for applications where dependable isolation and the ability to separate sections of a process system are important.
The double block and bleed arrangement provides two independent sealing barriers with a bleed or venting provision between the sealing points, depending on the valve design. This configuration can help support safe isolation and verification of the isolated section during maintenance and process operations.
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Key Features
- ✔️ Designed in accordance with API 6D
- ✔️ True Double Block & Bleed (DBB) functionality
- ✔️ Dual independent sealing system
- ✔️ Quarter-turn operation
- ✔️ Bubble-tight shut-off
- ✔️ Bi-directional sealing
- ✔️ Blowout-proof stem
- ✔️ Fire-safe design available
- ✔️ Anti-static device
- ✔️ Self-relieving cavity (Optional)
- ✔️ Full Port and Reduced Port options
- ✔️ Low operating torque
- ✔️ Compact and space-saving design
- ✔️ Automation-ready construction
Technical Specifications
| Parameter | Details |
|---|---|
| Size Range | 1/2″ - 16″ (DN15 - DN400) |
| Pressure Class | ASME Class 150# - 600# (PN10 - PN100) |
| Temperature Range | -29°C to +204°C |
| Body Materials | Stainless Steel (CF8M, CF8, CF3M), Carbon Steel (WCB), Alloy 20, Monel |
| Plug Materials | Stainless Steel (CF8M, CF3M), Hastelloy, Monel |
| Sleeve Material | Virgin PTFE, RTFE (Reinforced PTFE) |
| End Connections | Flanged (ASME B16.5), Threaded (NPT), Socket Weld |
| Operation | Lever / Wrench, Gear, Pneumatic or Electric Actuator |
| Design Standards | API 599, ASME B16.34, API 607 (Fire Safe) |
| Testing Standards | API 598 (Seat Leakage) |
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