Industrial Dbb plug valve Lift plug valve China factory supplier Manufacturer
What is Dbb plug valve ?
Non-lubricated metal seated Dbb plug valve were developed over 80 years ago to solve problems with existing valves in catalyst cracking service. As the valves preformed so well in this service it was also recommended for use in other hash applications in the chemical & petrochemical industry.As the valves preformed so well in this service it was also recommended for use in other hash applications in the chemical & petrochemical industry. To explain why the valve has been so successful we below stated the design features of the valve to provide more insides in its strengths.
PRINCIPLE OF OPENING AND CLOSING OF THE Dbb plug valve
Closing of the valve:
- 1)turn the handle lever by 90 degree to make the channel of plug vertical to the channel of valve body
- 2)then turn the hand wheel to descend the plug,so that the valve is closed.
Main features of Dbb plug valve
Features and benefits of Lift Plug Valve.
- *The product has reasonable structure, reliable sealing, excellent performance and beautiful appearance.
- *Able to be used in service conditions up to 650°C .
- *Double mechanical barrier, double Block & Bleed options.
- *Metal-to-metal seat, long seat life-time, seats protected from direct flow in open and closed position.
- *Hard-faced (stellite) seat surfaces options for extra performance.
- *No lubrication! No contamination of process medium.
- *The materials of the parts and sizes of flanges can be reasonably configured according the actual operation condition of the requirements of the customers,so as to meet the various needs of engineering.
Technical specifications of Dbb plug valve
| Design & manufacturer | API599, API6D |
| Nominal diameter | 1/2'' ~ 16''( 15mm ~ 400mm) |
| Pressure class | Class 150 ~ Class 1500 |
| Length of face to face | ASME B16.10 |
| Flange end | ASME B16.5 |
| Test & inspection | API598, API6D |
| Operation model | Handle wheel, worm gear, pneumatic and electric actuated |
Note: the size of serial valve connecting flange can be designed according to customers’ requirement.
Applications of Dbb plug valve
Dbb plug valve is widely used in severe working conditions,
- *chemical / petrochemical products (cracking applications)
- *crystallizing fluids
- *fluid with solids
- *cryogenic fluids
- *acids / basis / aggressive mediums
- *gases with solids
