阀门是PN64,法兰是PN63，为什么？

icasqs · 发表于 2020-11-27 16:47:06

阀门Z41W-64R,配套的管法兰是PN63的压力等级，按照对阀门型号的解读，应该是64公斤压力的，但为什么不是配套64公斤的法兰呢？查了一下HG20592，GB9113，GB9131,都没发现有PN64的法兰，那么，这个PN64的阀门怎么来的？有人了解过这些来历吗？另外，现场的PN63法兰确实能配上PN64的阀门。

lsslss6338 · 发表于 2020-11-27 16:47:59

阀门压力命名或者选取一般比相应的管道压力等级持平或者稍高，只要阀门配对的法兰与管法兰对的上就没问题。

maureen · 发表于 2020-11-27 16:53:39

两种习惯，一种是PN64，一种是PN63，以前用64的多，现在一般用63，没什么问题的，公称压力仅是一种概念性的东西，不要纠结于这类问题。

meidian88 · 发表于 2020-11-27 17:01:13

绝压和表压差别命名造成，其实是一个等级标准。

icasqs · 发表于 2020-11-27 17:02:02

maureen 发表于 2020-11-27 16:53
两种习惯，一种是PN64，一种是PN63，以前用64的多，现在一般用63，没什么问题的，公称压力仅是一种概念性的 ...

谢谢楼主的回答，问了一下，说PN64是很早就出现的一个等级，PN63是后来才出现的，估计是替代PN64的，因有些标准是沿用了PN64没有改过来，所以造成了现有两个等级并用的现象，但后面化工出的标准都统一为PN63了，所以查不到。可以说，PN64和PN63是同一个压力等级。

phyllis · 发表于 2020-11-27 17:02:42

没办法较真的事，你要把PN64的阀门上到PN16的法兰上才遇鬼了呢！
公称压力命名的差别！各有各习惯！

YANMUTANSD · 发表于 2020-11-27 17:03:18

应该就是同一个标准，都按照64压力的来

yue_Moon · 发表于 2020-11-27 17:03:39

一样的我之前替换以前老阀门也发现PN64的铭牌开始一脸懵逼现在都是PN63了

daihai123 · 发表于 2021-1-8 18:11:15

阀门公称压力和法兰公称压力均来自 GB/T 1048

kakak · 发表于 2021-4-13 09:00:08

鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊鞍山市所所所所所所所所所所所所所所所阿萨啊v