Introduction of Fully Welded Ball ValveFully welded ball valve (soft and metal seated) base on welded valve suitable for Oil & Gas production, processing, transportation, distribution, chemical and petrochemical refining on the above ground and below ground installations. The world famous design is the Cameron T31 ball valve.Technologies of Fully Welded Ball ValveTrunnion ball valves have the obturator bounded by trunnions which do not allow axial displacements of the ball itself in the flow direction; line pressure compresses the seat onto the ball, the contact between surfaces generates the valve sealing; trunnion standard construction ensure automatic cavity relief in case of overpressure in a body cavity; these valves can be selected for a wide range of applications with no specific limits to sizes and pressures. Fully welded constructions, both flanged or with welded ends, are a preferable solution when no maintenance is required on above ground or below ground (buried) installations and allows a real “A” leakage feature.Ball valves are often subjected to extreme conditions, especially when used in pipelines.To withstand even the highest loads, RAYS ball valves are therefore welded through the entire cross-section. Thus, weakening of the construction, for example by stress corrosion cracking on the weld seams, is actively counteracted.RAYS is one of the few manufacturers that actually weld the weld seams of its fittings over the entire cross-section using a complex process.Various testing procedures are used to confirm the tightness of the entire ball valve. Furthermore, weld seams undergo visual, magnet particle, ultrasonic, and – if requested – radiographic testing.And we do not rely only on ourselves. We contract external institutions to confirm the perfection of our products. The weld seams thus comply with the legal regulations for the construction of pipelines, reservoirs, tanks, and containers.Features of RAYS Fully welded ball valveReliableWe spend a great deal of time and investment and make considerable effort to ensure that the weld seams can withstand extreme conditions. That is the reason why our fully-welded ball valves operate reliably even under high pressure. The precision design and manufacturing of all components enables safe operation at all timesResistantOur fully welded ball valves offer almost no surfaces liable to corrosion. Water, dust, and sand cannot penetrate the ball valve and can therefore not settle in any cracks. Corrosive influences from the outside are thus actively reduced and the service life of our ball valves is increased significantly.Fire-SafeFire-Safe ball valves have been specially designed for use in critical areas.Thanks to the special design and the particularly resistant materials, RAYS Fire-Safe ball valves are qualified to cover all sizes/classes base on API 607, API 6FA.EconomicalIn addition to their robust design in respect to internal and external influences, our ball valves provide considerable savings potential for transporting, installing, and servicing ball valves. Our ball valves are thus an economical solution, especially in the long term.CertifiedAll welding seams are carried out by our trained welding specialists and checked by our welding engineers. Our company is process-tested according to DIN EN ISO 3834-3729 and AD-HP 2/1 (TÜV).…

IntroductionIn this article, you will learn about the different applications of high pressure ball valve API 6D.Design pressure from 20 bar (g) to 1035 bar (g), in combination with other service conditions in hydrocarbon processes, refining, petro-chemistry, determinates ball valve construction, and material selection.The construction of the valve type includes:Cryogenic Ball Valve, LNG Ball Valve, Refining Ball Valve, Liquid Nitrogen Ball Valve, also include Control Ball Valve with Actuator motor.This application can exist in combination with other service conditions, including corrosive & dirty applications with toxic substances, flammable liquids (LNG, LPG, or NGL condensate), or generic hydrocarbon gas in high pressure or high temperature applications.Specific for API 607 Fire Safe, and API 6D qualified.Low Pressure Ball Valves applied from PN20 (ANSI 150) to PN50 (ANSI 300)Ball valves with low pressure range are suitable for topside or subsea installations with a wide range of available constructions and materials: carbon steel, stainless steel or other low alloys without any particular requirement regarding strength and resilient properties; no specific care is required to select thermoplastic inserts and elastomer seals unless specified by the customer or when combined with other service conditions. Like cryogenic ball valve, gas ball valve, trunnion ball valve, floating ball valve, electric motorized ball valve, and pneumatic actuator ball valve.Soft seated ball valves can be supplied with a thermoplastic seat insert: PTFE, RPTFE, Nylon, Devlon V and PEEK, PCTFE; elastomer seat inserts are also available upon request.PTFE and RPTFE are mostly popular for floating ball valves, trunnion ball valves, and PCTFE for cryogenic ball valve service.Seals are mostly made by O-ring elastomers in FKM, HNBR, EPDM, FFKM, and FEPM, without the request of AED (Anti-explosion design) general, and lip seal is available for cryogenic ball valve.Low pressure ball valves can be manufactured according to API 6D, API 6DSS, ASME B16.34, ASME B31.3, ASME B31.4, ASME B31.8, section V, Section VIII Div. 1 and 2 Section IX, ISO 14313, ISO 17292, EN 1092-1 or equivalent standards.The low pressure application normally used for manual operatora)Lever operatorLever operation ball valve less than NPS 6, like floating ball valve, and trunnion ball valve.Also small size cryogenic ball valve with lip seal.b)Gear operatorGear operation ball valve no less than NP 2, with a big torque force.Like high temperature ball valve with the extended bonnet, Cryogenic ball valve with bigger size with high torque. And also severe service ball valve.Middle Pressure Ball Valves applied PN100 (ANSI 600)Ball valves with middle pressure range are suitable for topside or subsea installations with a large range of available constructions with few requirements regarding material selection: carbon steel, stainless steel or other low alloys can still be used, however, it is recommended a careful selection for stem materials which should be limited to good strength and resilient materials for gear operated or actuated ball valves unless specified by the customer or when combined with other service conditions. Like ESDV, SDV with actuator and general manual operator specific include cryogenic ball valve no less than NPS 2, floating ball valve and trunnion ball valve, also high temperature ball valve with extended bonnet.Soft seated ball valves can be supplied with a thermoplastic seat insert: PTFE, RPTFE, Nylon, Devlon V and PEEK, PCTFE; elastomer seat inserts are also available upon request.NYLON and PEEK become popular for middle pressure ball valves, cause of the material strength performance for different applications.Seals are mostly made by O-ring elastomers, FKM ED, HNBR ED, FFKM and FEPM, with explosive decompression resistance in high pressure gas services, while it is not strictly required if liquids are present.With the request of AED (Anti-explosion design) for elastic molecular safety, PTFE lip seals can be used. Medium pressure ball valves cryogenic ball valve service, floating ball valve, and trunnion ball valve, all can be manufactured according to API 6D, API 6DSS, ASME B16.34, ASME B31.3, ASME B31.4, ASME B31.8, section V, Section VIII Div. 1 and 2 Section IX, ISO 14313, ISO 17292, EN 1092-1 or equivalent standards.The middle pressure ball valves widely used for ESDV, SDVa)ESDV Ball Valve:Used for emergency shut down less than 3 seconds with the pneumatic actuator to keep the pipeline safe.Can be used for Cryogenic Ball Valve, Severe Service Ball Valve, High Temperature Ball Valveb)SDV Ball Valve:Used for Shut down service with general cycle stroke time base on the model and site supply on the actuator.The recommended design includes Cryogenic Ball Valve with pneumatic actuator, LNG ball valve with electric actuator, liquid nitrogen ball valve with the manual operator, and motorized ball valve.High Pressure Ball Valves applied from PN150 (ANSI 900) to PN420 (ANSI 2500)Ball valves with high pressure range are suitable for topside or subsea installations with a restricted range of available constructions and materials. A careful selection is required in this case: carbon steel, stainless steel, or other low alloys can be used, however duplex or high strength materials with good or excellent resilient properties should be used for ball, seat rings, and stem, both for manual or actuated ball valves, in order to withstand pressure ratings and actuators maximum allowable stem torque (MAST), unless specified by the customer or when combined with other service conditions.Soft seated ball valves can be supplied with a thermoplastic seat insert with good wear resistance and low friction coefficient: Nylon, Devlon V, and PEEK should be selected, PEEK has widely used for long range temperature applications on -100℃~+250℃.We selected PEEK for mostly high pressure ball valve, also floating ball valve and trunnion ball valve. Cryogenic ball valve didn’t in this range, cause the pressure is so high.The elastomer seat inserts are also available upon request. Seals are mostly made by O-ring elastomers, FKM ED, HNBR ED and FFKM, anti-explosive decompression requirement is mandatory. Alternatively, PTFE lip seals can be used. High pressure ball valves can be manufactured according to API 6D, API 6DSS, ASME B16.34, ASME B31.3, ASME B31.4, ASME B31.8, section V, Section VIII Div. 1 and 2 Section IX, ISO 14313, ISO 17292, EN 1092-1 or equivalent standards.Very High Pressure Ball Valves applied from PN720 (ANSI 4500) to PN1035 (API 15000)Ball valves with this extreme design pressure range, are suitable for topside or subsea installations with a restricted range of available constructions and materials. A careful selection is required in this case: duplex or high strength materials with excellent resilient properties should be used. Soft seated ball valves can be supplied with a thermoplastic seat insert with excellent wear resistance and low friction coefficient: Devlon V and PEEK should be selected;The elastomer seat inserts are also available upon request. Seals are mostly made by O-ring elastomers, FKM ED, and HNBR ED, anti-explosive decompression requirement is mandatory. Alternatively, PTFE lip seals can be used unless specified by the customer or when combined with other service conditions. Very high pressure all valves can be manufactured according to ASME B16.34, ISO 17292, API 6A, API 17D, ISO 14723, or equivalent standards.…

Introduction:Heating to boiling points, catalytic and hydro-treatments are some of the refining processes necessary to separate crude oil into storable fractions like marketable oils and condensate; most of these processes at high temperature, from 121C to 1100C (249,8C to 2012F), the High Temperature Ball Valve Metal Seated will be a better solution.RAYS can provide the metal seated ball valves engineered to withstand and exceed high temperature applications, with specific constructions and duly selected materials also suitable for geothermal applications.Especially where the direct use of steam, hot water, with abrasive and highly corrosive chemicals and minerals could foul, erode, and damage standard equipment.Offering unique features that make them an excellent choice for hot water (geothermal brine) and similar services from high temperature ball valve metal seated.This application can exist in combination with other service conditions.Including corrosive & dirty applications with toxic substances, flammable liquids (LNG, LPG or NGL condensate) or generic hydrocarbon gas in high pressure or cryogenic applications. Especially in metal seated for the high temperature severe service.Features and BenefitsThe RAYS type high-temperature metal-seated ball valve is well suited for a variety of demanding services where high-temperature and abrasive solids are present.a) Unique, the metal seated high temperature ball valve with patented single-seat ball valve design. It has a flat spring set acting through a hard-faced bearing against the bottom ball shaft which provides sufficient initial ball-seat load for valve tightness, even at low delta P.b) The metal seated high temperature ball valve design provides freedom for thermal expansion of the ball without jamming, even at extremely high temperatures.c) RAYS metal seated ball valve proven in qualification tests and field operation to be solids–proof, even for the toughest applications on slurry service with solids particles.d) Tightness rates: Allowable leakage rate at full Delta P: ASME/ FCI 70-2 Class VI/V. Tighter shutoff available upon request.RAYS high temperature ball valve metal seated leakage rate also can be customization from end-user requeste) The high temperature ball valve metal seated with standard extension bonnet/stem, whose design base on the different temperature range.Ball Valve in Design Temperature 121-200C (249,8-392F)RAYS Ball valves for this temperature range can have soft seated construction with thermoplastic inserts (Devlon V, Nylon, RPTFE, PEEK) and elastomer seals O-ring (FKM, FFKM, HNBR, EPDM, FEPM).Material construction does not require any particular care: carbon steel and stainless steel bodies and closures are acceptable, if suitable to other service conditions and pressure ratings.To prevent galling of the substrate, the PMSS (Primary Metal Secondary Soft) is a possible construction. It is provided by ENP or metal seated coating on the ball to maintain a differential hardness between the ball itself and the seat ring.Ball Valve in Design Temperature 201-350C (393,8-662F)RAYS Metal Seated Ball valves for this high temperature range should have metal seated construction with Tungsten or Chrome Carbide coating (from 150µm to 400µm) on the ball and seats sealing surfaces with graphite packing and suitable stem extension.The use of thermoplastic and elastomer compounds like PEEK and FFKM should be limited to the temperature below 250C and low pressures.Carbon steel and stainless steel materials, specific for high temperature conditions, should be selected for pressure containing and controlling parts;In case of combination with other service conditions like high pressure and corrosive & dirty applications, the materials with good strength properties are recommended, like 17-4PH and XM19. In some cases, Inconel 625 and 718 are used for ball, seat rings and stem.RAYS can provide the Tungsten Carbide coating no less than 1200HV hardness which is our standard request for high temperature metal seated ball valve.Witness sample of the metal seated ball valve’s ball and seat with Tungsten Carbide coating can be provided for inspection of the coating quality.Ball Valve in Design Temperature 351-550C (663,8-1022F)RAYS Metal Seated Ball valves for this high temperature range must have metal seated construction with Chrome Carbide coating (from 150µm to 400µm) or Stellite coating on ball and seats sealing surfaces with graphite packing and suitable stem extension.The difference between the hardness of the seat and the ball is necessary to avoid galling.Stainless steel (specific for high temperature conditions) for body and closures and Inconel 625 or Inconel 718 as trim or at least as stem material are strictly recommended for suitable valve construction.RAYS can provide the Stellite coating with no less than 37HRC ~ 47HRC hardness which is our standard request for high temperature metal seated ball valve.Witness sample of the metal seated ball valve’s ball and seat with Stellite coating can be provided for inspection of the coating quality.Product DescriptionHigh Temperature Ball Valve, Metal SeatedSize: DN15~DN1200, 1/2″ ~ 48″Rate: PN16~PN420, 150LB~2500LBLeakage: V / VIDesign: API 6D, ANSI B16.34…

IntroductionIn order to improve the control of volatile organic compounds (VOCs Control), RAYS has launched a full range of Fugitive Emission low-leakage Gate valves, Ball valves, Globe valves, and Butterfly valves that meet API 624 and API 641 standards, also can be ISO 15848, TA-LUFT, MESC SPEC 77-312.Fugitive Emission Low Leakage ValvesFugitive emissions are gas or vapor emissions from pressurized equipment that result from faulty equipment, leakage or other unforeseen events.The majority of these emissions come from industrial settings such as factories, power plants, oil refineries and chemical plants.Due to a large number of potential leak sources in these facilities and the difficulty in detecting and repairing them, these fugitive emissions can have significant consequences, including:Economic costs related to lost commodities.Environmental damage such as air pollution and the greenhouse effect.Long-term health risks to workers and local communities in close civic proximity of industrial facilities as a result of exposure to hazardous materials and volatile organic compounds (VOCs) such as benzene.Higher risk of fire and explosion in explosive environments where large amounts of flammable materials are contained under pressure.RAYS is focusing on two main standards that measure the emission levels of valves and packing products – API 641 and ISO 158481-1:2015 – and describing how RAYS valves are tested and certified to meet these standards, like Trunnion Ball Valve, Double Block and Bleed Ball Valve, Cryogenic Ball Valve, and Orbit Ball Valve, API 600 Gate Valve.API 641‘Type Testing of Quarter-Turn Valves for Fugitive Emissions’The API 641 standard is specifically relevant for quarter-turn valves. This standard applies to all stem seal materials, defines a stringent maximum allowable leakage of 100 parts per million by volume (ppmv), and utilizes methane as a testing medium and EPI Method 21 to measure emissions. It’s important to note that the U.S. Environmental Protection Agency (EPA) only recognizes API 641 emission testing.This standard calls for 610 mechanical cycles and 4 thermal cycles to evaluate the emission performance over an expected five-year lifespan of a valve. Under the Group A testing standard, the temperature is alternated between ambient temperatures and 260 C (500 F), and under the constant pressure of 600 psig. A static emissions measurement is taken before the cycling begins and this is followed by 14 static leakage measurements and seven dynamic leakage measurements during the testing procedure.The Quarter Turns Valves base on the stem with a quarter turn to open and close, such as DBB Ball Valve, DBB Plug Valve, Triple Offset Butterfly Valve, Cryogenic Ball Valve, and so on.ISO 15848-1:2015‘Industrial Valves – Measurement, Test and Qualification Procedures for Fugitive Emissions’Part 1 of the ISO 15841 standard outlines the testing and qualification procedures for the measuring of leakage from stem/shaft seals and body joints of isolation and control valves intended for application in environments containing volatile air pollutants or hazardous fluids.According to this standard, a valve must be cycled from 40% open to 60% open, and according to specific ratings for tightness class, endurance class, and temperature class:Tightness class – measured using either helium or methane as the test fluid, and defines standards for the maximum allowable leakage at each class rating.Endurance class ratings – the number of cycles that a valve has completed while successfully meeting at least the minimum tightness class for allowable leakage.Temperature class ratings – for different temperature ranges.The Industrial Valves include all kinds of valves, such as API 600 Gate Valve, BS 1873 Globe Valve, BS 1868 Check Valve, and API 594 Check Valve, and so on.And also include the quarter turns valves like Ball Valve and Butterfly ValveWhat RAYS can do?Through sophisticated processing equipment and testing instruments, RAYS strictly controls the surface roughness of the valve stem with a value of 0.4~0.8μm., and the surface roughness of the packing box with a value of 1.6~3.2μm. The selected graphite packing comes from suppliers and product models that have passed API 622 certification.Each valve is tested by a helium mass spectrometer in the laboratory of the RAYS factor. The external leakage of the valve is less than 100PPMv, and a special nameplate is hung before it can be allowed to leave the factory.RAYS can also design and customize products according to different fugitive emission standards such as ISO 15848, TA-LUFT, MESC SPEC 77-312 and other standards.We also welcome third-party inspection companies to the RAYS factory for acceptance. In order to provide protection for the user’s safe & reliable usage, the RAYS factory will issue a quality assurance certificate, a material certificate EN 10204.3.1, a fugitive emission test report, and a calibration certificate of the test instrument to the userProduct DescriptionName: Fugitive Emission low-leakage valveType: API 600 Gate Valve, API 6D Ball Valve, API 607 Ball Valve, Trunnion Ball Valve, Motorized Ball Valve, Triple Offset Butterfly Valve, Cryogenic Ball Valve, Extended Bonnet Ball Valve, Liquid Nitrogen Ball Valve, and etc.Specific Type: Double Block and bleed ball valve, Double Isolation and bleed ball valve, DBB ball valve, Rising Stem Ball Valve – Orbit Type DesignValve Standard: API 6D, API 608, API 607, API 6FA, ASME B16.34, GOST and EN / DIN.Material: Austenitic Stainless Steel, Forged Steel, and Cast Steel.ApplicationAll kinds of applications, specific in VOCs control. Also, The cryogenic ball valve is applicable.For any more information and inquiries, feel free to contact RAYS FLOW CONTROL.…

Do you want to know what the cryogenic ball valve with extended bonnet is and the tips of material choice and inspection? After reading this article, I believe that you will have a huge gain in the field of cryogenic ball valve design.When Natural Gas has to be separated into fractions or treated to protect equipment from contaminants (acids), sweetening and acid removal at -51 to -196C (-59,8 to -320,8F), are the final stage to do that, starting from liquefaction to sub-cooling stages, with pure or mixed refrigerants (methane, nitrogen) as cooling elements.RAYS FLOW CONTROL is the manufacturer of cryogenic ball valves with an extended bonnet design.The cryogenic ball valve specific in LNG valve application.Our production program offers special valve solutions engineered to suit cryogenic processes with specific constructions and duly selected materials.Base on the cryogenic service, RAYS design base on API 6D and API 607 Fire Safe with extended bonnet ball valve and complete tested refer BS 6364 standard.Product DescriptionName: Cryogenic Ball ValveOther names: API 6D Ball, API 607 Ball Valve, Trunnion Ball Valve, Motorized Ball ValveStandard: API 6D, API 608, ASME B16.34, GOST and EN / DINMaterial: Austenitic Stainless Steel, Forged Steel, and Cast SteelApplicationThe cryogenic ball valve is applicable to the different pipelines of Class 150~Class1500, PN16~PN100, JIS10K~JIS20K. By adopting different materials, it is applicable to different working temperatures and mediums. The minimum temperature for the ball valve is -196℃. The operation of the ball valve can be manually operated, gear operated, pneumatically operated, and motor operated. The end connection usually is flanged ends. However, the welded ends are also optional.Product rangeThe cryogenic ball valve design has two types: Floating ball valve and trunnion mounted ball valve. For their range, face to face dimension, and flange dimension, please refer to the corresponding data of common floating ball valve and trunnion mounted ball valve. For valves with the working temperature above -50℃, a long neck design is seldom adopted. For valves with working temperature below-50℃, the neck length T shall be 250mm or shall be decided as per our own design and calculation.The cryogenic ball valve is used for low-temperature working conditions, especially for some hazardous media, such as liquidized natural gas. Our company has been experienced in the design, manufacturing, inspection, and test of the cryogenic ball valve.Choose for materialCommon steels are brittle in the cryogenic condition. So, the key point for the design and production of the cryogenic ball is to select proper body material according to the minimum working temperature. To ensure the material suitability under the low-temperature condition, the material adopted shall be impact tested according to the standard requirement. The packing, gasket, bolt, and nut shall also adopt the materials suitable for low-temperature conditions.Inspection and TestingThe RAYS Cryogenic Ball Valve can be base on a floating cryogenic ball valve and trunnion cryogenic ball valve, also top entry cryogenic ball valve.All of the types are based on fire safe API 607 design, and cryogenic testing & inspection are based on BS 6364.The cryogenic ball valve should be cleaning process without oil grease, and valve shell/body testing by high-pressure air (nitrogen) on design class.The Cryogenic ball valve can be a motorized ball valve, electric ball valve, actuated ball valve, and also suitable for high-pressure ball valve. If you want to find a reliable cryogenic ball vale manufacturer or supplier, welcome to visit RAYS FLOW CONTROL.…