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  • Users: garry77
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  1. garry77

    Valve designation

    I am new to valves and their designation . eg . 1" threaded Ball valve with locking device and nace trim will be 1"BCN1.LN I understand all the letters except for the number 1 in the middle . Sometime I see 1"BCN2.LN . So what does 1 and 2 means and how to determine that when designating a...
  2. garry77

    valve designation

    Hello , I am a new project Engineer working in gas compression . Seeing a lot of 1/2" or 1" ball valves used as drains and vents . Common designation is 1"BCN1.LN , where B=ball C= Carbon N= NPT 1? L= locking N=Nace So the questions are 1. What does 1 stands for . Sometimes I have seen 2 or...

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