Valve size
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The valve I saw was marked with WCB 300 4. I would like to ask: is WCB the material, 300 the pressure rating, and does 4 refer to the size? How can the numbers 1, 2, 3, 4 be converted into dimensions?
It should be 4 inches; 1 inch is 2.54 centimeters
Your valve should be a US standard valve; 4 refers to NPS 4”, which is equivalent to DN100, 300 denotes the pressure class of Class 300Lb, and WCB is the material used
4 is a nominal diameter of 4" (DN100)
How can the numbers 1, 2, 3, 4 be converted into dimensions? You can refer to the ASME B36.10M standard: 1 = DN25 = outer diameter of 33.4 mm ； 2=DN50=60.3mm outer diameter ； 3=DN80=88.9mm outer diameter ； 4=DN100=114.3mm outer diameter ； 1=1*25=DN25=33.4mm outer diameter ； 1=1*25=DN25=33.4mm outer diameter ； 1=1*25=DN25=33.4mm outer diameter ；