Double block and bleed ball valve manufacturers in India
Speciality Valve is a well-known Double Block and Bleed Ball Valve manufacturers in India that offers premium-quality valves for rigorous applications in petrochemical, oil & gas, and process industries. Our valves are particularly designed to provide safe isolation, enhanced safety, and zero leakage even in severe pressure conditions.
Why Required?
Double block and bleed ball valves are required in situations where there is an absolute shutoff required to shut off critical equipment. They help in maintenance, prevent product contamination, and facilitate safe pressure or fluid drainage from the line while saving space and connection points.
Key Components of Double Block and Bleed Ball Valve:
Two independent ball valves: Offer double isolation
Bleed valve: Removes captured fluid or pressure
Body: Typically forged or cast steel
Seats and seals: Provide tight shutoff
Actuator or handle: Manual, pneumatic, or electric operation
Working of Double Block and Bleed Ball Valve:
The DBB ball valve features two seating surfaces and a bleed port between them. When the two isolation valves are closed and the bleed valve is open, any fluid or pressure trapped between the valves can be vented safely. This configuration offers double isolation in reality, reducing leakage downstream.
Advantages of Double Block and Bleed Ball Valve:
Compact design replaces complex multi-valve systems
Increases safety and reliability
Enables inline maintenance and calibration
Reduces possible paths of leaks
Saves installation space and time
Functions of Double Block and Bleed Ball Valve:
Provides isolation and venting
Allows release of pressure in critical systems
Prevents product contamination or product mixing
Assists safe maintenance practice
Types of Double Block and Bleed Ball Valve:
Floating DBB ball valve
Trunnion-mounted DBB ball valve
Manual or actuated DBB valves
Industries:
Oil & gas
Refining
Petrochemical
Power generation
Offshore platforms
Chemical processing
Being one of the top Double block and bleed ball valve manufacturers in India, Speciality Valve complies with global standards such as API 6D, ASME, and ISO. Our valves are subject to strict testing of performance, strength, and safety to fulfil stringent industrial demands.