Replacement issue between PN B series and ASME CLASS series
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This post was last edited by einstein1112 on 2015-10-21 at 11:08. The previous project was the CLASS series, and there are some remaining materials such as valves, fittings, and pipes that I would like to use in the new project. The new project is the PN B series. Fellow sailors, what are your thoughts on the feasibility of this? How troublesome is it? Continuing to edit: 10/21/2015. Isn’t the market situation poor these days? Everyone is trying to cut costs. The company’s manager is also in charge of finance, so they certainly don’t understand design. When I was at a large design firm, I would definitely not have considered this issue. I asked CPE Southwest again during lunch yesterday; they often do this, so I was relieved. It was mentioned upstairs that it’s possible to do so, but the standards need to be unified and everything needs to be connected to a single pipeline. Currently, that’s not the case for us – there are both American-standard valve fittings and metric-standard valve fittings on the same pipeline. Well, **there’s no mandatory standard that prohibits this approach; although it requires more work, we still have to go ahead and do it. I’m not sure if things will get chaotic during the actual construction on site in the future.
Fittings and pipes: some of the specifications match. . For example, DN80, DN200, DN250, but this does not apply to flanges and valves. .
It cannot be used universally whenever flanges, valves, or other components with flanges are involved. However, the materials from the CLASS series can still be used together if used separately. Ensure that the nominal pressure rating of the CLASS series is higher than that of the PN series.
Valves and flanges should be used in accordance with the relevant standards. Flanges and steel pipes of certain diameters can be used directly, while those of other diameters with minor deviations need to be polished. It depends on whether the construction team is willing to do it.