Middleeast Valve is the greatest Double Block and Bleed Ball Valve Supplier in Saudi Arabia. It is a specialized type of valve that provides an extra layer of safety and isolation in certain critical applications. It is designed to offer two separate sealing mechanisms to block the flow, as well as a vent or bleed valve for verification and release of pressure trapped between the two block valves.
The term "Double Block and Bleed" refers to the valve's ability to create two independent barriers (blocks) to isolate the fluid flow and a third valve to vent or bleed the cavity between the two blocks. This configuration allows for positive isolation of the fluid in the pipeline, making it ideal for applications where safety and leakage prevention are paramount.
The valve consists of a ball with a through-hole (bore) in the center. When the valve is open, the bore aligns with the pipeline, allowing fluid to flow freely. When the valve is closed, the ball rotates, positioning the bore perpendicular to the pipeline, effectively blocking the flow.
To achieve the double block functionality, the valve is equipped with two independent seats or sealing surfaces on either side of the ball. When the valve is in the closed position, both seats seal against the ball, preventing fluid from passing through.
The bleed valve, typically located between the two block valves, is used to vent or bleed any fluid trapped in the cavity between the seals. This is crucial for verifying the isolation and releasing any pressure that might accumulate due to thermal expansion or other factors.
Middleeast Valve is the foremost Double Block and Bleed Ball Valve Supplier in Saudi Arabia and provides a redundant and reliable means of isolating a section of pipeline or equipment from the rest of the system. It prevents the flow of fluid by using two separate sealing mechanisms (double block) and allows for the release of trapped pressure between the seals through a vent or bleed valve.
Advantages:
Enhanced safety
Space and cost saving
Simplified maintenance
Industries:
Oil and gas production, refining, and transportation
Petrochemical and chemical processing plants
Power generation
Water treatment and distribution
Aerospace and aviation fuel systems
Description:
Materials: Cast iron, Cast steel (WCB, WCC, WC6, WC9, LCB, LCC), Ductile iron, SS304, SS316
Class: PN10 to PN 450; 150 to 2500
Ends: Buttweld, Flanged, Socket weld, Threaded
Size: 1/2’’to 24’’
Operations: Electric Actuated, Pneumatic Actuated, Gear Operated, Handwheel Operated
https://www.middleeastvalve.com/product-category/double-block-and-bleed-ball-valve/
