Specialityvalve is the Leading Double Block and Bleed Ball Valve Manufacturer in India. Double Block and Bleed (DBB) ball valves are a type of industrial valve that are used for the isolation and control of fluid or gas flow. They are called "double block and bleed" because they are designed with two seals or shutoff points, one at the inlet and another at the outlet of the valve, along with a bleed port in between the two seals.
The purpose of the bleed port is to allow any residual pressure trapped between the two seals to be relieved, thus ensuring that the valve is in the fully closed position. This design is particularly useful in applications where it is important to isolate and shut off the flow of dangerous or toxic substances, as it provides a high degree of confidence that the flow has been fully stopped.

Specialityvalve is a Well-Known Double Block and Bleed Ball Valve Manufacturer in India which gives long service and provides reliable sealing over the life span even if the valve is not used for a long time. The ball Valve is used for fluid shutoff upstream of oil and gas production facilities. It used in fuel gas systems feeding furnaces.

Advantages of double block and bleed ball valve:
o Compact design
o It provides sealing against pressure from both upstream and downstream.
o Prevent product contamination.
o Remove equipment from service for cleaning or repair.
o High reduction of leak paths


Applications of Double Block and Bleed Ball Valve
• Oil & Gas, Chemical, and Petrochemical industries.
• Meter calibration
• Instrument drain connections
• Liquid pipelines
• Refined production transmission lines


Available Materials: F51, ASTM A105, WC6, CF8, CF8M, SS304, SS316, WCB, WCC, LCB, LCC, WC6
Size: 2 to 48
Class: 150 to 2500
Nominal Pressure: PN25 to PN450
Operations: Gear Operated, Pneumatic Actuated, Electric Actuated
Ends: Flanged, Buttweld, Socketweld

https://www.specialityvalve.com/product-category/double-block-and-bleed-ball-valve/