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Double Block and Bleed Lever Operated/Trunnion Dbb Ball Valve1
Valve, Dbb Valve, SBB Valve
Goole Valve technology Co., Ltd.
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Product Description Double Block and Bleed Lever Operated/Trunnion Dbb Ball ValveProduct DescriptionDouble Block & Bleed Flanged Ball Valve Product Description name of commodity: DBB Double Block & Bleed Floating Ball Valve (DBBQ41F) Floating Ball ValveNominal diameter:1/2"-12"Nominal pressure:150Lb-600Lb , 10K-40KApplicable temperature: -196~250oC, 250~425oCAvailable material: CS, SS, FS,304,316,316 L, CF8, CF8M , chrome molybdenum steel , Low temperature steel.Driving type :Electric, Pneumatic, Worm wheel, manual, hydraulic .(Note: Pictures of products for worm gear drive)Applicable medium: water, gas, oil product, Food, medicines, chemicals natural gas and corrosive medium as acid, alkali, etc.SpecificationDouble Block & Bleed Flanged Ball Valve SpecificationDesign standard: ANSI B16.34 GB/T12237Physical dimension: ANSI B16.10 GB/T12221Flanges dimension: ANSIB16.10 GB/T15188.1Test and inspection: API598 GB/T909 Double Block & Bleed Flanged Ball Valve structure characteristics1. The double block and bleed valve have evolved to replace and add the process of bolting together individual valves to make the valves in one body .it saved a lot of space and material.2. Special designs including injecting quills ,sample probes ,double block and single block, in-built check valves and seat wipers.3. Dual isolation is necessary requirement when maintenance is taking place down stream of the first isolation valve. Cavity venting is provided by either a ball or globe OS&Y vent valve so that trapped pressure between the two isolation valves is safely vented.4. These valves have also evolved to encompass the function of chemical injection (using a suitable quill) and sample points .In-built check valves are often integrated in these valves.5. Fire Safe according to BS6755/API 6FA/API 607, since each sealing point is provided by a secondary fire-safe seal in graphite. Valve soft seats also are provided with secondary metal-to metal seal in case of fire.6. Valve design can be either Trunnion or floating type ,anti blow -out stem and typically SPE seat design .Drain port is normally provide with a floating ball valve ,to be fitted with final user drain line .valve seats can be soft or metal to metal hard-faced. Double Block & Bleed Flanged Ball Valve Standards compliance: Design and Manufacture: API 608, API 6D Face to face(end to end): ANSI B16.10, API 6D Flanged connection: ANSI B16.5 Fire-safe: API 607,API 6FA Butt welded end: ANSI B16.25 Test and inspection: API 598,API 6DOur AdvantagesDouble Block & Bleed Flanged Ball Valve Advantage:1. The fluid resistance is small, its resistance coefficient with section of equal length.2. Simple structure, small volume, light weight.3. Compact and reliable, the widespread use of plastic ball valve sealing surface of materials, good sealing, also has been widely used in the vacuum system.4. Easy to operate, open and close quickly5. Easy maintenance, simple structure of ball valve, sealing ring, which generally remove replacement is more convenient.6. In the fully open or fully closed, the ball and seat sealing surface and the dielectric isolation, medium through, can not cause the valve sealing surface erosion.7. Applicable scope is wide, size from small to several millimeters, big to a few meters, from high vacuum to high pressure can be applied.Product ParametersDouble Block & Bleed Flanged Ball Valve dimensions DimensionsClass 150Sizeinch1/23/411-1/222-1/23468L-RFmm108117127165178191203229394457L1-BWmm140152165190216241283305457521L2-RTJmm--140178191203216241406470Bmm13192538516476102152203Hmm65708095110135145170235275Kmm150155160180200225325350500600WT.Kg34581221264380155 DimensionsClass 300Sizeinch1/23/411-1/222-1/23468L-RFmm140152165190216241283305403502L1-BWmm140152165191216241283305457521L2-RTJmm151165178203232257298321419518Bmm13192538516476102152203Hmm708590105120145160195250290Kmm155160180200225325350500600700WT.Kg357131528325510517Product DetailsDouble Block & Bleed Flanged Ball Valve materialsMaterialsNO.Part nameMaterial13HandleCarbon steel12Lock nutCarbon steel11Gland nutCarbon steel10Thrust washerPTEF/NYLON09Gland bushStainless steel08StemStainless steel NO.Part nameWCBLCB07Stud and nutA193 Gr B7/A194 Gr 2HA320 Gr L7/A194 Gr 406PackingGraphite/ptfeGraphite/ptfe05Ball seatPTFE/RPTFE/NYLONSPTFE/RPTFE/NYLON04GasketGraphite/spiral woundGraphite /spiral wound03BallA182 F6aA182 F30402R-bodyA216 Gr WCBA352 Gr LCB01L-bodyA216 Gr WCBA352 Gr LCB NO.Part nameCF8CF8M07Stud and nutA193 Gr B16/A194 Gr 4/7A193 Gr B7/A194 Gr 2H06PackingGraphite/ptfeGraphite/ptfe05Ball seatPTFE/RPTFE/NYLONPTFE/RPTFE/NYLON04GasketGraphite /spiral woundGraphite /spiral wound03BallA182 F304A182 F31602R-bodyA351 Gr CF8A351 Gr CF8M01L-bodyA351 Gr CF8A351 Gr CF8MThank you for visiting our website, if you have any doubts you can feel free to contact us ,we will try our best to provide you with quality service.View of the factory
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