DBB Ball Valves
QDV's DBB valves are widely used in gas process or transportation industry for conventional on-off, emergency shut off and quick opening and controlling the flow. Top flange is designed per ISO5211 for easy amount various type of actuator.
*Design standard:ASME B16.34
*Length of structure:ASME B16.10
*Flange connecting end:ASME B16.5
*Butt welding connecting end:ASME B16.25
*Wall thickness:ASME B16.34
*Fireproof test:API 607/BS6755
*Inspection and test:API 598
*Pressure and temperature rating:ASME B16.34
*Product scope:NPS 1/4’’~3’’,CL150~CL600
*Main body material:A105,LF2,F51,F304,F316,Monel Alloy 400
*Drive device:Lever, Worm wheel, Electric, Pneumatic etc.
*Two piece body design-minimize leakage paths
*Designed to comply with requirements of ANSI/ASME B16.34
*Ball seats choice of seat materials:PTFE(virgin or filled)PVDF,Nylon or PEEK
*Bubble tight shutoff
*Floating ball principal with dynamic response seats featuring inherent self relief.
*Anti blowout stem
*Integral compression ends available eliminating taper threads and thread sealants
*Low torque operation
*Connector thread environmentally sealed.
*Anti static design as standard
*Firesafe designed to meet BS6755 Part2/API 607
- Packing: WOODEN CASE
- Shipping: FOB
- Standard: API6D
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