什么时候应该使用三件式球阀
2020年8月07
球阀的选择似乎无穷无尽。为了选择合适的球阀,你必须决定阀座的材质是什么?什么样的终端连接?满港、减港还是标准港?2路还是多端口类型?包装吗?在本文中,我们将讨论什么时候应该使用三件式球阀。什么是三件式球阀?球阀分为一体式、两件式或三件式。一体式球阀相对便宜,通常不需要维护。 A two-piece ball valve consists of two separate parts that are connected by a threaded or bolted and flanged assembly. According to this law, you may have guessed that a three-piece ball valve consists of three pieces. Yes, there are two end caps and a valve body. The end caps are either welded, threaded or flanged to the piping on either side of the valve. Why use a three-piece ball valve? For projects with a large number of valve requirements, three-piece ball valves are more convenient than one-piece or two-piece ones. When seats and seals need to be replaced periodically, three-piece valves can be easily disassembled, repaired and reassembled without major cuts to the piping. Three-piece ball valves also allow replacement of elastomers to accommodate different process conditions, temperatures, pressures and flow rates. Do you need to weld the valve in the field? Another benefit of a 3 piece ball valve is the fact that it can remove the valve body and trims while welding. Because that, the body and trims can be kept intact. What is the biggest difference between a 2 and 3 piece ball valve? The two-piece ball valve was also designed in the view of easy maintenance. The major difference between the two is that the valve body on a three-piece valve can be removed without disturbing the two end caps. Two-piece ball valves usually do not allow this, let alone one-piece ball valves. There are, of course, price differences. As mentioned earlier, one-piece valves are usually disposable. Three-piece valves tend to cost more initially, but in the long run, maintenance costs and the ability to replace the seat and seals should be kept in mind rather than replacing the valve.
查看更多