WENZHOU AEA VALVE CO., LTD.  

Product Name: Fire Safe Design Forged Stainless Steel Integrated Body Screw Vent Flanged Double Block and Bleed Floating & Trunnion Mounted Dbb Twin Ball Valve Model NO.: Q47 Application: Industrial Usage, Water Industrial Usage, Household Usage Standard: API 6D Temperature: Low Temperature Function: Blow-Down Valve, Relief Valve, Atmospheric Valve, Bypass-Valve Type: Fixed Ball Valve Structure: Fixed Ball Valve Channel: Straight Through Type Nominal Pressure: 150-2500lbs Driving Mode: Manual Connection Form: Flange Material: Stainless Steel Media: Gas Body: Split Body or Integral Body Ball: Enp,Chrome Plating,Tungsten Carbide,Chrome Carbide Stem: Blowout-Proof Stem Seat Ring: Single Piston Effect or Double Piston Effect Seat Seat Insert: PTFE,Rptfe, Nylon, Devlon, Peek,Molon O Ring: Aed O Ring Fire Safe: External Leakage Prevention, Internal Leakage Prev Sealing: Double Block and Bleed Cryogenic Services: Extended Bonnet for Cryogenic Services Special: Nace Mr-0175 Trademark: O. E. M or AEA Brand Transport Package: Plastic+Wooden Case Specification: 1500*1500*2000mm Origin: China HS Code: 848180 Product Description DOUBLE BLOCK AND BLEEDFLOATING & TRUNNION MOUNTED BALL VALVEAEADouble block and bleed Ball Valve require two isolation in one line and a bleed function. It is appliedto control the flow between the two 'ball valves' cavity in order to block the downstream pipeline in a safety way. The double block is playing the role of venting the pressure safety during maintenance by avalve stead of two bolted valvesStandards of complianceFactory certificationISO 9001-2008Quality management systemValve design & testsANSI B16.34, API 608, API 6D / ISO 14313, ISO 17292Valve designANSI B1.20.1NPT - National Pipe Taper threadDIN 3852BSPPANSI B16.11, EN 12760Socket weld end connectionANSI B16.25, EN12627-4Buttweld end connection (schedule 5, 10, 40, 80)ANSI B16.5, EN 1092 Pt 1&2Flange dimensionsNACE MR-0175, ISO 15156-1/2/3Materials for use in H2S-containing environments in oil and gas productionEN 12266-1, API 598Testing of metallic valves - pressure tests, test procedures and acceptance criteria.API 607, ISO 10497Testing of valves - fire type-testing requirementsISO 15848-1Industrial valves - measurement, test and qualification procedures for fugitive emissionsCertificationsPED 2014/68/EU Module HPressure equipment directiveATEX 2014/34/EUequipment and protective systems intended for use in potentially explosive atmospheres (optional for actuated unit only)IEC 61508-2 SIL 2/3Safety integrity level - functional safety of electrical/electronic/ programmable electronic safety-related systems (optional for actuated unit only)documentationEN 10204 2.2 / 3.1 / 3.2metallic materials - types of inspection documentsStandard DesignAEA Double Block and Bleed Valves comply with ASME, ANSI and API standards. The advanced features incorporated onto our range of floating and trunnion ball valves are also designed into these double block and bleed valves. These features are requirements by end users such as Petrobras, Aramco, BP and Pemex - which includes ISO 15848-1,2 fugitive emission tests.AEA carry out NDT tests on sample castings per batch to ensure high quality castings for our "right first time" production philosophy.Product Design Features-Ball - Floating Ball or Trunnion Mounted. Choice of bleed valve.-Gate Type - Stelited Seats. Choice of bleed valve.-Sealing options including additional graphite, O-rings and/or lip seals.-Seating options including PTFE, PEEK and metal seated.-Seating options including Devlon, Nylon, PTFE, PEEK, PCTFE and TCC metal seated.Production Range-1-1/2" to 8"-150lb to 2500lb-Full and Reduced bore-Manual and Actuated-Ball Needle Ball-Gate Needle GateMaterial Scope-Statoil approved QTR qualified to NORSOK M650 edition IV.-Carbon and Low Temperature Carbon Steel-Austenitic and Super Austenitic Stainless Steels-Duplex and Super Duplex-Nickel alloys and Super alloys eg 6Mo, Hastelloy, Inconel and Monel.All from high quality forgings & castings. Other material combinations available against specific requirements.Option-metal Seated Ball valves with Tungsten Carbide Coating (TCC) on the seat and ball-Inconel overlay seat pockets-Hot Dipped Galvanised Bolting (HDG)Features & Benefit-BenefitOur DBB valve design can be effectively used in critical applications like instrument take-offs, sampling systems, chemical injection and severe applications like sour service where the material compliance to NACE MR-0175 is assured.- Body DesignAEA design is built to be suitable as standard for most customer specifications in terms of corrosion allowance requirement.- Body Sealing DesignBody seal design is modular. Therefore, we are able to meet our customers body sealing specifications including lip seals and other sealing options. Body seals feature O-ring plus graphite as standard rather than O-ring or graphite only.Design Feature-Design Option Our DBB valve can be manufactured in different variations. Whilst maintaining the main blockage device as a ball, the bleed device can be designed to suit customer requirement with needle, gate, and globe options available.-Design StandardThe DBB valve can be manufactured in both Floating and Trunnion types, exotic materials and any combination of end connections.-Engineered SeatCompensate for wear and pressures to prolong sealing life. Seat is thicker and seated deeper in the valve.-Self Relieving SeatWith double block and bleed.-Sealant InjectionOptional sealant injection system.-Stem DesignStronger stem, meaning a higher MAST value, with no impact on break torques. The stem slot into ball is deeper and slightly curved which gives better control of ball and reduced risk of shearing. Our stem design incorporates a tamper proof antistatic device and is blowout proof.-Stem Sealing DesignThe stem O-ring is located in the body which reduces the friction on the sealing area and so improves performance and provides a long cycle life as demonstrated by our Fugitive Emissions Testing. The stem seal design also features live loaded packing.-Actuation Ready DesignLarge ISO plate and plate design reduces the time and cost of actuation. Uniform torques provide prolonged cyclic life.-Locking DeviceStandard on lever and gear operated valves.-TestAEA test to API 6D, API 598/EN 12266-1. Fugitive Emission Testing to ISO-15848-1,2. Fire safe to API 607/EN ISO 10497. All tested in-house.