DBB Twin-seal Plug Valve, expanding plug valve, also named as General Valve offer double port seals in both directions as well as a sealed isolation of the chamber below the plug and the areas around the plug at 90° to the port openings. A single valve can isolate either upstream or downstream, thus eliminating the need for the traditional two double block valves — a definite reduction in cost and maintenance, especially in processes involving large diameter lines.

MANUFACTURING CAPABILITIES
» Sizes Ranges from 2” thru 24”
» Pressure Ratings: ASME #125, 150, PN10 or PN16.
» Ends Connections in Flanged R.F, F.F or Grooved
» Operations in Manual, Electric or Pneumatic Actuators

STANDARDS COMPLIANCE
» Design & Manufactured to API 6D, API 599, ASME B16.34 or DIN3202
» P.T Ratings to ASME B16.34
» Face to Face dimensions to ASME B16.10
» Flanged Ends to ASME B16.5
» Butt-weld Ends to ASME B16.25
» Threaded Ends to ASME B1.20.1
» Socket-weld Ends to ASME B16.11
» Valves Marking to MSS SP-25
» Inspect & Tested to API 6D, API 598

To achieve the Double Block and Bleed combination, a drainage connection into the plug cavity is added by drilling and tapping through the bottom of the valve body