Double Block&Bleed Ball Valve (DBB)
Specification:Size: 1" ~ 10" (DN25 ~ DN250)
Double block and bleed ball vlaves are designed in order to replace the multiple valves connection complex forms in traditional pipeline,reduce the leakage in system to achieve quickly bleed,close function.double block and bleed ball valves maximum save installation space and simplified installation program.cut down the pressure in piping system,convenient instrument cleaning maintenance and reduce the costs.
The valves are widely used in electric power,petrodeum chemical industry,metallurgy,marine,oil,natural gas,coal gas,phameceutical and other industries hydraulic system pipeline
Design Standard: ANSI/ASME B16.34
Fire Safe: API 607/BS6755
End Connection: ASME B16.5
Inspection and Test: API 6D, API 598
Size: 2" ~ 24" (DN15 ~ DN300)
Rating: ANSI 150lb, 300lb, 600lb,900lb,1500lb,2500lb
Body Materials: Cast Steel,Stainess Stell,Alloy Steel,etc
Ball&Stem: A105, F304, F316,F304L,F316L,F51,Monel
Operation: Lever, Gear,
Two piece body design-minimize leakage paths.
Bubble tight shutoff
floating ball principal with dynamic response seats featuring inherent self relife
Anti blowout stem
Integral compression ends availably eliminating taper threads and thread sealants
Low torque operation
Connector thread environmentally sealed
Anti static design as standard.
Firesafe designed to meet BS 6755 part2/API607(optional)