What are the basic properties of the welded ball valve pipe conveying system in natural gas, coal, oil, water, chemical solvents and other transportation occupies the important position of fluid, it is said that more than 90% of the country's transportation of pipeline system for natural gas is used, the valve control is an important part of a piping system, then, what are the basic performance welded ball valve need? To introduce the below. One, zero order seal welded ball valve, place the order, butterfly valve, cut-off valve sealing requirements must be zero level, so as to ensure effective truncation of downstream piping. If the delivery with metal particles in liquid medium, may affect the valve seal, valve seal and the difference between primary and secondary seal, the former is metal to metal seal, the latter is the metal to rubber or PTFE material. In the event of seal failure in transmission medium, medium leakage, shall be emergency seal loss will affect the control to a minimum. Second, the fire retardant anti-static fire retardant anti-static design of welded ball valve also to do the best, otherwise once the fire caused the leakage and leakage, damage is the second, if it is pipeline system problems of natural gas, chemical plants, there are a lot of potential safety problems. When welding ball valve ball part is non-metallic friction clamping, prone to static electricity, so the sphere conduction must be connected to the valve body. If it is transport corrosive chemical fluid medium, then choose made of anti-corrosion materials welded ball valve. In addition, poor welding ball valve and heat resistance, pressure, the basic properties such as wear resistance, the quality of the welding ball valve performance and its production is directly related to the material and production technology, so at the time of purchase welded ball valve must be looking for a reliable manufacturer is top priority. This article by all standing Industrial Valves ( News) Editing and publishing
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