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  1. V

    Estimating preload reduction in a joint between two threaded parts with a gasket for sealing.

    Since there's no sealing at threads, pressure will be communicated upto the gasket.
  2. V

    Estimating preload reduction in a joint between two threaded parts with a gasket for sealing.

    For calculating fluid separation load, we need to take circular area where pressure acts which is usually taken as area bound by gasket mean diameter. I am more interested in knowing its effect on the preload. Should I subtract the entirety of fluid separation load or only a fraction. If...
  3. V

    Estimating preload reduction in a joint between two threaded parts with a gasket for sealing.

    The design is made compact because of space constraints. I want to know if there is any industry accepted number to estimate preload reduction. For example, if fluid separation load is Ff. I have to reduce (K)*Ff from initial preload. So what would be the value of K in general? I have seen it...
  4. V

    Estimating preload reduction in a joint between two threaded parts with a gasket for sealing.

    It's a cryogenic joint. So O-ring cannot be used. Design is already frozen. I am merely analyzing it. Specifically, I am analyzing if the factor of safety on torque being given. To do that I should know how much of the fluid separation load shall be subtracted from initial preload. Hope the...
  5. V

    Estimating preload reduction in a joint between two threaded parts with a gasket for sealing.

    Thank you for your reply. The joint between two parts is threaded one! I could not show it properly because I couldn't use AutoCAD to draw it. Pressure will act on an area equivalent to seal area which is bound by diameter of gasket in this case. The separation load will reduce compression in...
  6. V

    Estimating preload reduction in a joint between two threaded parts with a gasket for sealing.

    Here I have a threaded joint between a plate and a fluid adaptor. The joint has a gasket for sealing. I am trying to calculate the reduction in initial preload when fluid pressure is introduced. Specifically I want to know if I shall subtract the fluid separation load as a whole or some fraction...

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