Ministry of Chemical Industry High Pressure Petrochemical Special Ball Valve

  Product Description  Gb flange ball valve design standard:    1,Design and manufacturing standards according to: GB12237;    2,Structure length: GB12221;    3,Flange end size according to: JB/T79,GB9113,HG20592, etc.;    4,Thread end size according to: JB/T7306;    5,Size of butt welding end: JB/T12224    5,Socket size: JB/T1751    6,Inspection and test according to: JB/T 9092, GB/T13927;     Product Parameters ★ GB flange ball valve structure features:   1, manual floating ball valve switch indication The ball, stem and handle are the moving parts of the valve and are an assembly unit. The head of the stem adopts a flat square structure. It is easy to tell from the position of the handle whether the valve is in the open or closed position. When the handle or stem square is parallel to the pipe axis, the valve is in the open position; When the handle or stem square is perpendicular to the pipe axis, the valve is in the closed position.   2, national standard flange ball valve in order to prevent misoperation of the valve, Ruitong valve factory in the design of the ball valve with a lock-hole positioning plate to meet the user's process requirements, in the valve fully open or fully closed position can lock the valve.    3, national standard flanged ball valve stem anti-fly structure When the medium passes through the valve, the pressure in the body cavity may push the stem out. To prevent this from happening, a boss structure is provided at the lower part of the stem. In this way, even if the fire, the packing, the thrust bearing is burned or other reasons caused by the packing damage, the medium pressure in the valve body will make the valve stem convex and the valve body seal close contact to prevent a large number of media from the damaged packing part of the leak.    4, national standard flange ball valve anti-static device When the valve is operated, electrostatic charges are generated and accumulate in the ball line due to friction between the ball and non-metallic materials such as polytetrafluoroethylene. In order to prevent electrostatic sparks, the anti-static device is set on the valve, and the generated static electricity is exported (please contact the company's salesman for details).    5, national standard flanged ball valve fire structureRuitong Valve Co., Ltd. production of the national standard flange ball valve seat with a unique structure, when the fire, non-metal sealing surface material burned, the metal ring use the spring of the spring to push the seat and the ball seal, thereby preventing the spread of fire and media outflow. (Fire resistant structural design in accordance with API607, JB/T6899 and BS755)    6, the middle flange of the GB flange ball valve has no external leakage structure The connection between the valve body and the left body is sealed by the cushion piece. In order to prevent the leakage of the seal caused by fire, high temperature or vibration, the valve body is specially designed to contact with the metal of the left body to form a stop flange to ensure that there is no leakage.    7, national standard flange ball valve automatic pressure relief structure When the medium trapped in the valve cavity changes due to the pressure of the pipeline system or the temperature of the medium, resulting in an abnormal increase in the pressure of the cavity, the medium can rely on its own thrust to push the valve seat and automatically relieve pressure, thereby ensuring the safety of the valve.  Type DNPN1.6MPaWT(kg)LDD1D2bz-ΦdHWQ41F-16CQ41F-16P Q641F-16CQ641F-16P Q9B41F-16CQ9B41F-16P15130956545144-Ф14781403201401057555144-Ф14841604251501158565144-Ф149518053216513510078164-Ф1815025094018014511085164-Ф181503001150200160125100164-Ф181703501565220180145120184-Ф181953501980250195160135208-Ф1821540027100280215180155208-Ф1825050038125320245210185228-Ф1826560058150360280240210248-Ф18270800812004003352952652612-Ф2333080095 Type DNPN2.5MPaWT(kg)LDD1D2bz-ΦdHWQ41F-25Q41F-25P Q641F-25Q641F-25P Q9B41F-25Q9B41F-25P15130956545164-Ф141031003201401057555164-Ф141121604251501158565164-Ф1412316063216513510078184-Ф18150250104018014511085184-Ф181562501450200160125100204-Ф181723502065220180145120228-Ф181973502580250195160135228-Ф1822245030100280230190160248-Ф2325345040125320270220188288-Ф2527560065150360300250218308-Ф25286800852004003603102783412-Ф253601200100  Detailed Photos   Certifications Packaging & Shipping    Company Profile Yueqiang Valve Co., Ltd. has been committed to the development of the valve industry, is a set of control room design, research and development, manufacturing, sales and service in one of the large valve enterprises, is the national excellent pressure pipeline components manufacturing license AAA level credit enterprise, national key support high-tech enterprise implementation unit. Its production and development of gate valves. Globe valve, regulating valve, ball valve, butterfly valve, self-operated valve, vacuum valve and other products have been widely used In