Product Name: DBB Ball Valve, Three-piece
Design Standard: EEMUA 182, API 6D
Body Material: ASTM A105N
Size: Customized
Pressure: Customized
End Connection: Flanged
Double Block and Bleed (DBB) Valves ensure a double isolation function with two obturators integrated into a single body. They provide a bleed function through a bleed/vent system located between the obturators (body port and ball, gate, or needle valve). Derived from the floating ball valve design, DBB valves are available in various constructions. Double block and bleed ball valves (DBB ball valves) enable the isolation of a pipe section from both sides of the valve, preventing accidental leaks and enhancing safety—making them highly efficient for the oil and gas industry. In addition to strong security features, our valves minimize the need for additional valves, optimizing space and reducing costs.
Technical Specifications
» Size Range: NPS 1/2-2 Inch (DN15-DN50)
» Design Pressure: Class 150-2500 LB (PN10-PN420)
» Materials: Forged Carbon Steel, Stainless Steel, Duplex, or Special Alloys (ASTM A105N, A350 LF2, A182 F11, F22, F304, F304L, F316, F316L)
» Trim Materials: 13%Cr, SS 304, SS 304L, SS 316, SS 316L, and other special materials
» End Connections: Flanged x Flanged, Flanged x FNPT
» Operation: Handle, Worm Gear, Electric, Pneumatic
» Temperature Range: -46°C to 350°C
» Medium: Water, Gas, Oil
» Standards
Design and Manufacture: API 6D, BS 5351, ASME B16.34
Face-to-Face Dimensions: Manufacturer's standard
Flanged Connections: ASME B16.5
Test and Inspection: EEMUA 182, API 598
Threaded Ends: ASME B1.20.1
Fire Safety: API 607, API 6A
Product Features
» DBB integrated body with dual-type design
» Side-entry forged steel valves
» Top-entry design available upon request
» Low pressure loss through the valve
» Low actuation torque
» Full bore or reduced bore options
» Materials with anti-corrosion properties per NACE MR 0175
» Metal-sealed seat pocket area overlay, seal area overlay, or complete cladding on wetted surfaces (welded overlays in Inconel 625, Stainless Steel 316, etc., or electroless nickel plating)