DBB Ball Valve Manufacturer, Double Block & Bleed Ball Valves China

DBB Ball Valve

Double block and bleed (DBB) ball valves are single valve with two seating surfaces, each of which, in the closed position, provides a seal against pressure from a single source. Double block and bleed ball valve works as an alternative to the in-line installation of two valves, have the result in reducing costs.
 
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