DBB has various meanings in the Valve category. Discover the full forms, definitions, and usage contexts of DBB in Valve.
Two successive plugs, each capable of holding maximum pressure, with a vent between them capable of bleeding off all pressure between the plugs. Also a valve with two seating surfaces which, in the closed position, blocks flow from both valve ends when the cavity between the seating surfaces is vented through a bleed connection on the body cavity.
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