Recently, a batch of high-performance top entry ball valves with DN150-DN500 and PN100-PN180 have been successfully produced and passed various tests in our RAYS factory. All the valves have been delivered to our foreign customers at the end of September 2020 and will be put into use for a large natural gas project.The valve body for this order is forged by integrated forging. Compared to casting, the mechanical property is more stable and reliable under the working condition of gas medium at minus 60 degrees. All of the workpiece was machined by CNC lathe and machining center, which ensures the shape, position tolerance, and accuracy of the workpiece. In addition, the ball and valve seat products adopt: cemented carbide spraying technology, the sealing surface hardness is high, wear-resisting, high temperature resistance, erosion resistance, and other excellent characteristics.The finished product test after assembly simulated the gas working condition of the user. After nitrogen high-pressure gas test, the hard contact sealing surface reached the standard of zero leakage.Structure and characteristics of top entry ball valveTop entry ball valve is used mainly in pipeline and industrial systems which can utilize inline maintenance. Its main features are: simple structure design, low flow drop, compact size, light weight, reliable sealing, and quick open/close. The operation methods can be: manual, gear, pneumatic, electric, gas-over-oil, electro-hydraulic, and others.Top entry one-piece bodyTop entry ball valves differ from other standard ball valves is that it can be maintained online without removing from the line. It reduces maintenance costs and extends service life. The welded end structure is installed on the pipe, which is not affected by the pipe stress and objectively reduces the leakage point while ensuring the sealing reliability.Seat sealing designSeat sealing include: seat, seat insert, and other components. Seat inserts can float independently in the axial position and seal the seat at zero pressure/low pressure by preloading the spring. This design is used to realize the ability to turn off the quality under working pressure and high pressure conditions. On the outside of the seat insert, we insert the O-ring and the elastic ring to ensure the seal between the seat and body. The expanded graphite also retains the seal in case of field fire to ensure the reliability of the valve seat against fire.Emergency rescue and valve lubricationWhen the valve seat and stem seal are damaged, leak occurs. The sealing grease injected by the grease valve can achieve the function of emergency sealing. Under the normal working condition of the valve, the valve stem and sphere can be lubricated by injecting grease through the grease valve, making the valve more flexible and portable.Extended stemFor buried valves, the valve stem can be extended according to the installation and operation needs. The size of the extension stem will be according to customer requirements. All blowdown pipes, vent pipes and emergency injection devices shall be extended accordingly. Other related pipes shall be attached to the extended part of the valve to connect the: blowdown valve, vent valve, and injection valve to the ground for installation in order to facilitate the regular maintenance of the main valve.Anti-static designThe upper and lower stems (trunnion) are designed against static according to API 6D and IS0 17292.DBB/DIB-1/DIB-2 Design diversityWhile the upstream uses the single piston seat, the downstream uses the double piston seat which has the double blocking function and can cut off from the upstream/downstream media at the same time. With automatic directional pressure relief function, the valve seat can automatically relieve pressure (discharge to the upstream side) when abnormal pressure boost occurs due to temperature increase of the medium trapped in the valve chamber.Low torque valueThe top entry ball valve is a trunnion mounted type where the surface of the ball is: grinded, polished, and hardened. A sliding bearing is fitted between the ball & stem to minimize friction and operating torque.Operation typeConnection flanges between valves & actuators comply with ISO 5211 to make them more adaptable and interchangeable. Conventional operation methods include: manual, pneumatic, electric, gas-over-oil, electro-hydraulic, and so on.…

Recently, a batch of high-pressure pipeline ball valves of DN250-DN400 PN63-PN320 have been successfully completed in our RAYS factory. DN250 PN320 and DN300 PN320 passed the high-pressure nitrogen test of 32MPa for three cycles to meet the requirements in harsh working conditions. The DN400 PN63 metal seated ball valve passed the high-pressure nitrogen test of 6.3MPa for three cycles, and all products meet the Grade A zero leakage requirement in harsh working conditions. This batch of products will be delivered to Russia in upcoming days at an ambient temperature of minus 60 degrees Celsius YAMAL project put into use.Product introductionSpecial purpose metal seated ball valves and high-pressure pipeline ball valves are suitable for Class150 ~ Class2500, PN16 ~ PN420 various pipelines, used to cut off or connect the medium in pipelines. Through the choice of: carbon steel, stainless steel, alloy steel and other valve material – special purpose metal seated ball valve and high-pressure pipeline ball valve can be applied to water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media. Manual, worm drive, pneumatic or electric operations are available according to customer needs.The high-pressure pipeline ball valve is designed and manufactured by: absorbing foreign high-pressure pipeline ball valves technology, adopting special sealing structure, using reliable sealing performance, realizing zero leakage truly, and passing the high-pressure gas zero leakage test requirements. Special purpose metal seated ball valve is designed and manufactured with our special structure, which can realize zero leakage. The ball and seat of the metal seated ball valve for special purpose have good shearing self-cleaning function, which eliminates the phenomenon of stuck resistance caused by dust particles sticking to the valve seal, and keeps the appearance of the conventional metal seated ball valve. The seal of this metal seated ball valve produced by RAYS is processed by supersonic flame spraying tungsten carbide superwear-resistant alloy technology. It has the properties of high hardness and ultra-normal wear resistance where the hardness is up to HRC65~80. Its service life is far longer than the traditional hard sealed ball valve, which is suitable for: organosilicon, polysilicon project, and other special working condition systems.Structural featuresRAYS developed and produced a special use metal seated ball valve with: the advanced supersonic spraying, nickel-based flame spray ball, and seat hardening technology. This is to prevent the valve at high temperatures rise to death, scraper device, such as patent structure, good sealing performance, completely fireproof structure design, natural anti-static structure design, the function of blocking and discharge etc., solved the hard particle medium under harsh conditions for sphere wear-resisting coating wear easily, fall off, medium coking, valve stuck, short service life, to ensure that the metal seated ball valve wear-resisting reliable seal under various temperature and pressure.Quality assuranceQA from the design of ball valves to the procurement, processing, assembly, testing, subsequent surface treatment, packaging, and shipping. This is not only to meet the company’s quality system requirements, but also for the third-party agencies/customer end-users to witness at the same time. Also, this is to ensure that every valve can meet all quality requirements when leaving the factory.Applicable standard specificationsDesign and manufacturing standards: API 6D, API 608, BS 5351, GB/T 21385Structural length standard: ASME B 16.10, GB/T 12221, GOST 28908Connecting flange standard: ASME B 16.5, GOST 33259, GB, JB, HG, SH, BS, DIN, JIS, etc.Test standard: API6D, API 598, GB/T 13927, GB/T 26480, JB/T9092, ISO 5208 GOST 9544…

RAYS Pneumatic Globe Valves, the body materials have been specially tested for HIC resistance to hydrogen cracking, which can ensure the service life of the site.…

Recently, RAYS have successfully completed a DN150-DN1000 PN63 Gas-Over-Oil actuated ball valves project which have passed various tests. After debugging, these 17 pcs of ball valves and actuators have been delivered to our foreign customer in March of 2020 which will be placed in a large-scale booster compressor station project.Due to the recent epidemic situation in China, under the advice of the local epidemic prevention team during early March, RAYS management and personnel department properly arranged the enterprise to resume work and production. RAYS have tried their best to shorten the impact of the delivery date for customers.All the ball valves delivered this time adopted safety Gas-Over-Oil actuator with hydraulic manual and pneumatic functions, which are featured with remote control and ESD emergency shutdown functions. The customer only needs to provide 220V AC power supply on-site. In addition, the challenging characteristics of the products in this order were: large diameter, high pressure, high height of the whole setup, the largest single piece of the DN1000 ball valve weighed about 15 tons, production equipment, lifting equipment, debugging equipment, and personnel safety production. In the early stage of order production RAYS held: production seminars, process seminars, safety production training sessions for personnel, debugging training sessions for executing agencies, and other ways to ensure the smooth progress of the order. Also, RAYS held reasonable time planning and procurement of the corresponding supporting equipment to ensure the production efficiency of the order and the stringent testing requirements of the valves.The products of this order have two different designs of ball valves: bolted body connection and fully welded body. Before installation of the actuator, in order to ensure that the torque of the ball valve is within the theoretical calculation range, there is a need to detect the torque value of the ball valve before the actuator debugging. Fortunately, RAYS is also equipped with a special automated computer torque detector for situations such as this.The excellent quality and high-performance stability of the fully welded ball valve is not achieved by the normal ball valve. Therefore, the service life of the fully welded ball valve far exceeds the normal ball valve. In this instance, it is used very widely in various fields such as: urban gas, urban heating, petrochemical, ship-building, steel, pressure control station, power plant, and other types of pipeline equipment. Fully welded ball valves can be: long-term, stable operation, easy installation, lower cost of the expenditure, etc. In the foreseeable future, the fully welding process will become a trend in valve manufacturing.For more information, please visit http://old.raysvalve.com/, or send an email to info@raysvalve.com…

Recently, RAYS have successfully completed 14 pcs of fully-welded ball valves with specifications of DN1200 PN16 which have passed various tests. They will be delivered to an international customer and put into use within a large-scale natural gas project. Such a large sized valve can be called a “giant valve”. Valve companies rarely produce such large sized full welded ball valves. Therefore, this was also the first time for us, here at RAYS, to manufacture such a large size. We used a serious and rigorous attitude into each process which we invested 100 percent of the effort, and the final product resulted in our favor - RAYS extra-large sized fully welded ball valves finished for delivery successfully. Technical features of fully welded ball valves:Due to the ball valve adopting a fully-welded structure, the overall leakage point is very little which greatly reduces the risk of leakage.Compact structure & easy for installation.Special flux is used in welding with fine granularity and good slag removal which can meet the high strength & toughness of weld metal performance.With fire-safe & anti-static device which are safer and more reliable.The buried type ball valves can be directly buried into the ground, no need to build a tall valve well, only set up small shallow well on the ground, and greatly saves construction costs and engineering time.Body length and stem height can be adjusted according to pipe construction & design requirements.The machining precision of the sphere is very precise and easy to operate.With our customer’s request, the driving device includes: lever, worm gear, electric, pneumatic, pneumatic-hydraulic, electro-hydraulic, etc. The excellent quality and high-performance stability of the fully welded ball valve is not achieved by the normal ball valve. Therefore, the service life of the fully welded ball valve far exceeds the normal ball valve, so it is used very widely in various fields such as: urban gas, urban heating, petrochemical, shipbuilding, steel, pressure control station, power plant, and other types of pipeline equipment. Fully welded ball valves can be: long-term, stable operation, easy installation, lower cost of the expenditure, etc. In the foreseeable future, the fully welding process will become a trend in valve manufacturing. For more information, please visit http://www.raysvalve.cn/, or send an email to info@raysvalve.com, or call +86-577-66999000…