Product Name: One Piece DBB Ball Valve
Design Standard: API 6D
Body Material: ASTM A105N
Size: 1/2 Inch, DN15
Pressure: Class 900 LB, PN150
End Connection: RTJ
Operation: Lever
Double Block and Bleed (DBB) Valves provide a double isolation function with two obturators inserted into a single body. They feature a bleed/vent system between the obturators (body port and ball, gate, or needle valve), allowing for effective fluid venting. DBB ball valves are designed to shut down a pipe section from both sides of the valve, ensuring safety by preventing accidental leaks that could pose hazards. This design is especially valuable in the oil and gas industry, where it enhances safety while minimizing the need for additional valves, saving both space and 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
» Optional Top-Entry Design (upon request)
» Low Pressure Loss Through the Valve
» Low Actuation Torque
» Available in Full Bore or Reduced Bore
» Materials with Anti-Corrosion Properties According to 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)