The two-way pressure bearing spherical rotary valve is characterized in that the valve seat seal is a spherical seal. The sealing surface of the valve plate and the valve seat is an oblique cone structure, and a temperature-resistant and corrosion-resistant alloy material is deposited on the oblique cone surface of the valve plate; the spring fixed between the adjusting ring pressure plate and the adjustment bolt on the pressure plate are assembled together. This structure effectively compensates the tolerance zone between the sleeve and the valve body and the elastic deformation of the valve stem under the medium pressure. Anhui professional pneumatic vacuum baffle valve _ Chuanxuan automatic control equipment solves the valve in two-way interchangeable medium Sealing problems during transportation. The use of soft T-shaped multi-layer stainless steel sheets on both sides to form a seal ring has the dual advantages of metal hard seal and soft seal. No matter under low and high temperature conditions, Anhui professional pneumatic vacuum baffle valve _ Chuanxuan automatic control equipment has zero Leakage sealing performance.　　 test proves that when the medium flow direction is the same as the disc rotation direction, the pressure on the sealing surface is generated by the torque of the transmission device and the effect of the medium pressure on the valve plate. When the positive medium pressure increases, the tighter the squeezed conical surface of the valve plate and the sealing surface of the valve seat are pressed, the better the sealing effect. When in the reverse flow state, Anhui professional pneumatic vacuum baffle valve _ Chuanxuan automatic control equipment, the seal between the valve plate and the valve seat is pressed against the valve seat by the torque of the driving device. With the increase of the reverse medium pressure, when the unit positive pressure between the valve plate and the valve seat is less than the medium pressure, the deformation energy stored by the spring of the adjusting ring after being loaded compensates the tight pressure of the sealing surface of the valve plate and the valve seat Play the role of automatic compensation. Therefore, unlike the existing technology, the utility model does not install soft and hard multi-layer sealing rings on the valve plate, but directly installs on the valve body. Adding an adjustment ring between the pressure plate and the valve seat is an ideal two-way hard sealing method. . It will replace gate valves, globe valves and ball valves.

The GIQ type pneumatic high vacuum butterfly valve changes the direction of the gas path through the electromagnetic directional valve, and controls the execution of the cylinder to drive the butterfly valve for opening and closing movement. Used to connect or cut off the air flow in the vacuum line. The applicable medium is pure air and non-corrosive gas. Optional feedback signal device and electric valve positioner. In the past two years, nuclear valve manufacturing enterprises have jointly made progress in the research and development of some key nuclear valves with China Guangdong Nuclear Power Group and China National Nuclear Corporation and other owners. According to the current bidding for nuclear valves in Qinshan and Hongyanhe projects, combined with the existing capabilities and performance of the valve industry, the localization rate of valves in Hongyanhe Units 1 and 2 will reach about 35%; after another 1-2 years of research and Research and development, nuclear valve manufacturing will have a major breakthrough, and the localization rate of Hongyanhe Units 3 and 4 is expected to reach 60%. 　　The rapid development of high-end valve localization 1. The localization of high-end valves The previous year, Jiangnan Valve Company independently developed and merged The 5-meter ultra-large-diameter vacuum butterfly valve, which has undergone hundreds of experiments, was put into production, and the first domestic-made valve entered the large-scale national defense wind tunnel test. Provided a two-way vacuum sealed butterfly valve and a special pressure regulating valve for the test device, and made important contributions to the promotion of "Chang'e" to the moon. The company successfully developed the world's first zero-leakage "adjustable metal seal butterfly valve" in 2005, replacing gate valves and globe valves with greater energy consumption and material consumption

GD type high vacuum baffle valve, vacuum baffle valve, high vacuum baffle valve, pneumatic vacuum baffle valve, pneumatic high vacuum baffle valve, high vacuum pneumatic baffle valve, used to connect or cut off the air flow in the vacuum pipeline . The applicable medium is pure air and non-corrosive gas. High vacuum baffle valve can be divided into two types: GD-J rubber shaft seal and GD-J(b) bellows shaft seal according to the shaft seal structure. According to the conduction mode, it can be divided into GD-J as an angle through type, and GD-S as a three-way type with pre-extraction. ■Main Technical Performance Application scope: Applicability 　105～1.3×10-4Pa (shaft seal is rubber) 　105～1.3×10-5Pa (shaft seal is bellows)　 Valve leakage rate: Valve Leak Rate　≤1.3×10- 4Pa.L/S. (shaft seal is rubber) 　≤1.3×10-5Pa.L/S. (shaft seal is bellows) 　 Applicable temperature: Applicable Temperature 　-25～80℃(rubber)　-30～150℃(fluorine rubber)

GDQ type pneumatic high vacuum baffle valve, vacuum baffle valve, high vacuum baffle valve, pneumatic vacuum baffle valve, pneumatic high vacuum baffle valve, high vacuum pneumatic baffle valve, is to change the direction of the gas path by electromagnetic directional valve , Control and execute the cylinder to drive the valve for opening and closing movement. Used to connect or cut off the air flow in the vacuum line. The applicable medium is pure air and non-corrosive gas. In the past two years, nuclear valve manufacturing enterprises have jointly made progress in the research and development of some key nuclear valves with China Guangdong Nuclear Power Group and China National Nuclear Corporation and other owners. According to the current bidding for nuclear valves in Qinshan and Hongyanhe projects, combined with the existing capabilities and performance of the valve industry, the localization rate of valves in Hongyanhe Units 1 and 2 will reach about 35%; after another 1-2 years of research and Research and development, nuclear valve manufacturing will have a major breakthrough, and the localization rate of Hongyanhe Units 3 and 4 is expected to reach 60%. 　　The rapid development of high-end valve localization 1. The localization of high-end valves The previous year, Jiangnan Valve Company independently developed and merged The 5-meter ultra-large-diameter vacuum butterfly valve, which has undergone hundreds of experiments, was put into production, and the first domestic-made valve entered the large-scale national defense wind tunnel test. Provided a two-way vacuum sealed butterfly valve and a special pressure regulating valve for the test device, and made important contributions to the promotion of "Chang'e" to the moon. In 2005, the company successfully developed the world's first zero-leakage "adjustable metal-sealed butterfly valve" to replace gate valves and globe valves with greater energy consumption and material consumption.

Based on the analysis of domestic and foreign electric valve technology and the analysis of domestic and international electric valve market needs, the industrial high-tech development trends and investment directions of industrial electric valves and electric valve industries in various industries in recent years have been studied, as follows: 1. Oil and natural gas Valves for wellhead devices are mainly single or double gates complying with American API6A standards, forged steel parallel gate valves with or without diversion holes, mud valves, angle throttle valves , Parallel control valve for oil field, straight-through check valve for oil field, parallel gate valve for water injection polymer, clamp parallel gate valve, pilot safety valve and check valve. 2. Valves for oil and natural gas long-distance pipelines Valves for oil and natural gas long-distance pipelines are mainly single or double gates in accordance with the American API6D standard, flat gate valves with or without diversion holes; forged steel or cast Steel three-body, top-loaded or fully welded fixed ball valve oil-sealed or pressure balanced plug valve; rotary or butterfly check valve, ball check valve; pigging valve, etc. 3. Valves for nuclear power Electric valves for nuclear power have higher technical characteristics and requirements than conventional large-scale thermal power stations. Valves generally include gate valves, globe valves, check valves, butterfly valves, safety valves, main steam isolation valves, ball valves, diaphragm valves, pressure relief valves, and control valves.