A quick question about stop valves
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I encountered external threaded globe valve specifications denoted as PN2.5 DN10/Φ14 and PN2.5 DN10 Φ14/Φ14. I’m not sure if these two notations are equivalent; how should I understand them? I’d like to ask the experts for advice.
It should be consistent; the latter part merely indicates a change in diameter
So how does this diameter change?
There should be a difference: DN10/Φ14 refers to threaded valves, while Φ14/Φ14 refers to welded valves. Theoretically, DN10/Φ14 represents a reduced diameter design; however, these terms are rarely used these days
Is the Φ14/Φ14 mentioned upstairs a welded valve? In our data sheet, it specifies threaded connections; for both of the above specifications, an outer sleeve nut fitting is required.
External threads are also an option; it mainly depends on the pressure rating.
From your writing, there are no thread specifications such as G3/8 or NPT, but DN10 is indicated, which refers to the engineering diameter or the metric thread G3/8; there is a slight difference between metric and imperial standards
I think the two are the same; it’s just that individual writing styles differ. Of course, the latter one is more standardized. Φ14/Φ14 indicates that the outer diameters of the nut fittings at both ends of the valve are 14 mm each. If there is a change in diameter, it’s necessary to specify both values, don’t you think?
What was said upstairs is correct: Φ14/Φ14 indicates that the outer diameters of the nuts on both ends of the valve are both 14 mm; writing just Φ14 also means that the outer diameters of the nuts on both ends of the valve are 14 mm.