DBB Valve

Double Block & Bleed Valve is a compact valve assembly designed to provide positive isolation by using two sealing (block) valves with an intermediate bleed valve. This configuration allows safe isolation of process media and enables pressure release or venting from the cavity between the two block valves. DBB valves are widely used in critical applications where leakage prevention, safety, and maintenance efficiency are essential.

Manufactured from high-quality materials such as SS 316, SS 304, carbon steel, or alloy steel, DBB valves are engineered for high-pressure and high-temperature service. Their integrated design reduces the need for multiple fittings and connections, minimizing potential leak paths and saving installation space. These valves are commonly used in instrumentation lines, pipelines, and process systems requiring reliable isolation and venting.

Technical Details:

• Product Type: Double Block & Bleed Valve
• Material: SS 316 / SS 304 / Carbon Steel / Alloy Steel
• Configuration: 2 Block Valves + 1 Bleed Valve
• Connection Type: Flanged / Threaded / Tube Ends
• Thread Type: BSP / NPT / BSPT
• Size Range: 1/4 to 2 (instrumentation type) / up to larger sizes for pipeline DBB
• Pressure Rating: Up to 6000 PSI (instrumentation type)
• Temperature Range: -40C to 400C
• Operation: Lever / Handwheel
• Standards: API / ASME / ANSI / ISO