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  1. Chonwe

    Torispherical head calculations ASME VIII div. 1

    In appendix 1,1-4 there is an equation for different knuckle radius and inside crown radius ratio, in terms of M. However, in the notes of table 1-4.2, says that L can’t be greater that the outside diameter. It seems that U-2(g) should be applied, so I must make a FEA based on ASME VIII div2?
  2. Chonwe

    Torispherical head calculations ASME VIII div. 1

    Hello, I am working on calculating a pressure vessel head using ASME VIII div. 1 code. The torispherical head has the following dimensions: Do=1170, t=10, L=2100, r=50 (mm). The ratio t/L=0.004, which is greater than 0.002, so equations from UG-32 (d) shall be used. The main issue is that...
  3. Chonwe

    Low pressure PSV selection

    You are correct. I was used to PSVs set at 2 to 6 bar. The cost of those is approximately 1/10th of the price of this 21 mbar PSV, which is why I'm concerned (For obvious reasons, the mechanics of these PSVs are different). The only thing that makes me doubt is that these low-pressure PSVs are...
  4. Chonwe

    Low pressure PSV selection

    Hello everyone, can you help me with this question? Is there a PSV for low-pressure and small flow requirements? I need a PSV to be set to 20 mbar with a flow based on API 2000 of 1.3 Nm3/h of air. As you can infer, it's for the ventilation of a small tank. For your information, the tank is...

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