J41TC ceramics ceramic high temperature and pressure shut-off valve shut-off valve is successfully developed by our company has the international advanced level products, due to the high temperature ceramics with good mechanical stability, creep resistance, chemical resistance, abrasion, erosion resistance, hardness characteristics, be regarded as "third generation" New Sealing Materials International today. As the ceramic and metal in connection method of thermal expansion coefficient of the metal case, is this product unique characteristics. The product not only solve the problem of the coefficients of expansion, but also to solve the problem fixed two kinds of materials, and give full play to the ceramic at high temperature and pressure resistance, erosion, abrasion resistance, excellent performance cavitation, anti-oxidation, is the current domestic and international metal Seal the lack of a stable sealing performance. Life is several times the metal. Cut-off valve works: As of valve opening and closing parts of the plug-shaped valve, flat or cone, appear before the valve seal along the centerline of the fluid in a straight line. Stem form of exercise with lifting rod (stem down, the hand wheel does not lift), but also lift rotating rod (hand wheel and stem rotation movements, nut located in the body). Valve is only suitable for fully open and fully closed, not allowed to be adjusted and the throttle. Shanghai Valve Manufacturing Co. Kerry on the cut-off valve is mandatory sealed valve, so when the valve is closed, pressure must be applied to the valve to force the sealing surface does not leak. When six o'clock the media from below the valve into the valve, the operating force required to overcome the resistance, is the stem and packing friction thrust by the pressure generated by the media, close the valve of the force is greater than the force to open the valve, so the valve The larger the diameter of the rod, or stem benders failures occur. In recent years, from the emergence of self-sealing valve, the medium flow shut-off valve on the change into the valve chamber from above the valve, then at medium pressure, a small off valve force, and force open the valve, the valve stem diameter can be reduced accordingly. Meanwhile, in the role of the media, this form of valve is also relatively tight. China's valve "three to" has been provided, closing the flow valve, should be top-down. Closing the valve opening, valve opening height for nominal 25% to 30% of the diameter, the flow has reached the maximum, indicating that the valve has reached the fully open position. So off fully open position of the valve, the valve stroke should be determined. Kind of cut-off valve stem threads are divided by location external thread type, thread type. According to the flow of media points, straight-through, DC type and angle type. Cut-off valve according to the sealing form points, shut-off valve packing and bellows sealed stop valves. The valve flap and valve sealing surface precision ground, assembled 100% pressure test, all to achieve zero leakage. As a secondary seal, above the bellows still retains the stuffing, but also increases the reliability and security. High-pressure valve metal bellows are multi-layer structure by hydroforming, can guarantee the maximum pressure at 10,000 times the whole trip on / off life. Suitable for conducting oil, toxic, flammable, strong permeability, environmental pollution, radioactive fluid medium pipeline make shut-off valve can also be used to adjust, creating no leak factory quality products. The valve is used in all castings precision casting. Shut-off valve is closed parts (valve) moves along the centerline of the valve seat. According to this mobile form of valve and valve seat port change is associated with the valve stroke is proportional. As such the valve stem to open or close the relatively short trip, but also have very reliable cutting function, but also because the trip is proportional change in the seat and the valve port valve is very suitable for flow regulation. Therefore, this type of valve is suitable for cut or regulation and throttle use. Closing performance of the valve, cutting off the main line media play a role. Compared with the valve, adjustment better performance, opening height is small, the closing time is short, manufacturing and easy maintenance, sealing surface easy to wear, abrasion better sealing performance, long life; cutoff valve body structure design of more twists and turns, Therefore, flow resistance, energy consumption; suitable for steam, oil and other media, not for high viscosity, with particles, easy to coke, easy precipitation media. The high pressure valve, large diameter cut-off valve can be balanced structure, extending the product off valve - throttle by changing the flow channel cross section of media pressure and flow control, in addition to opening and closing parts adopt streamlined cone, the other big parts are identical with the shut-off valve. Bellows sealed globe valve, its key components - metal bellows, the lower end of the stem assembly automatic roll welding, the upper end of the connecting plate automatic roll welding, between the fluid medium and the atmosphere to form a metal barrier, to ensure that the stem zero leakage. (Shanghai Kerry on Valve Manufacturing Co., Ltd. sincerely welcome all friends to visit and negotiate business, willing to work with you hand in hand for a better tomorrow) Ordering :( national standards) a, A: product name, model number, nominal diameter B: media and temperature and pressure range C: Are there attachments, delivery, special requirements so that we can correct for your selection. Second, if the company has been selected by the design of the valve type, please directly contact our sales center to order according to the valve parameters. Third, when you use the occasion is very important or the environment is more complicated, please provide design drawings and detailed parameters, our engineers specialists will concentrate on your review and analysis. Thank you for visiting our Kerry on Shanghai Valve Manufacturing Co., Ltd. [http: // www www.shsjvm.com.cn.] If you have any questions, you can call us and we will try our best to provide you with the most professional. the best quality service. "Marie Claire" valve, we will give full play to their advantages, personnel development as the guide, based on technological innovation, and constantly improve the management level, the application of new technologies, new processes, new materials, and actively develop new products. Further explore the international and domestic market, to provide quality products and excellent service. And strive to become China's valve industry leading enterprises. We sincerely welcome all friends to visit and negotiate business, willing to work with you hand in hand for a better tomorrow. This article Source: Shanghai Kerry on Valve Manufacturing Co.