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["A escolha da pressão nominal dos conectores deve ser superior em uma classe à pressão de projeto do tubo?"

2020-07-11View Original

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"Deve a pressão nominal ser superior em uma classe à pressão de projeto do tubo? Qual padrão especifica isso?"
Reply #22020-07-11
"Não precisa de um padrão! Se for inferior, não poderá ser usada?"
Reply #32020-07-12
"A pressão de projeto não tem classes, A pressão nominal cobre a pressão de projeto."
Reply #42020-07-13
"A pressão de projeto de 114MPa certamente requer uma válvula de 116MPa. Com "11 16MPa, geralmente se "111 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " pérdida pérdida
Reply #52020-07-14
要说依据是哪个标准还真不没注意。一般考虑都是为了安全起见,当然也不必设计2.0Mpa,不选择25公斤的阀门,非得用40公斤的。

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