Dual Seal DBB Expanding Plug Valve

The Calvary DBB Expanding Plug Valve is designed as a high integrity double block and bleed expanding plug valve. These valves are manufactured and tested to API 6D and ANSI B16.34 specifications. This movement assures positive shut-off while reducing wear between the sealing surfaces and extending the life of the valve. The mechanical seal provides a superior valve for demanding applications; including those requiring zero-leakage in Double Block and Bleed service. The valves are designed for easy in line service to be performed through the top entry access.

Sizes:  2” thru 36”
Pressure Classes:  
150, 300, 600, 900
Operating Temperatures:    
-20F to +356F (-29C to +180C)

 Available End Connections:

  • Raised Face Flange
  • Ring Joint Flange
  • Weld End Connection
  • Flange By Weld End Connection

Features Include:

  • Double Block And Bleed Valve Body
  • Cast Steel Construction
  • NACE
  • Positive (Bubble Tight) Closure
  • Mechanical Sealing/Operation
  • Trunnion Mounted Plug
  • External Thermal Body Relief
  • Fire Safe Design
  • Field Repairable In Line
  • Extensions and Adaption for Actuation Available
  • Wide Range of Trim Options Available


Click here to download PDF for technical information.