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  1. ValveEngineer123

    B16.5, ASTM SA-193 and SA-194

    B16.5 gives guidance as to acceptable bolting materials to be used for flange bolting. In Table 1B, different grades of SA-193 are categorized as either high, intermediate or low strength. In addition, the notes to this table include statements such as 'nuts may be machined from the same...
  2. ValveEngineer123

    Swivel Type Flange (Collar) Nuts

    Does anyone know if collar nuts with a swivel washer are acceptable to use for B16.5 flange bolting applications? I have an application where a blind flange is bolted on and off a mating flange several times per day and the blind flange is starting to wear at the nut bearing surface. I want to...
  3. ValveEngineer123

    Pallet Racking and Workbench Design

    I am a mechanical engineer (thermo/fluids, process system, component design) that has been assigned some additional duties. I was wondering if any structural or industrial engineers could point me towards some good resources regarding the following topics: 1) Pallet Rack Design: Specifically...
  4. ValveEngineer123

    Pallet Racking and Workbench Design

    I am a mechanical engineer (thermo/fluids, process system, component design) that has been assigned some additional duties. I was wondering if any structural engineers could point me towards some good resources regarding the following topics: 1) Pallet Rack Design: Specifically interested in...
  5. ValveEngineer123

    Minimum Wall Thickness and Taper Threads

    The ASME B&PV code gives an eq'n to calculate minimum required pipe wall thickness for given pipe dimensions (OD,ID), design pressure and allowable stress on the pipe material. The eq'n also includes an 'A' factor, which is to account for additional thickness required for, say, material removed...
  6. ValveEngineer123

    Bolt Preload and Sect. VIII - App. 2 Flange Stress

    I am designing a flanged connection to the rules of Sect. VIII - App. 2 (actually Sect.III, App. XI, but its the same procedure). I am using a corrugated stainless steel gasket at the connection, for which app. 2 gives a minimum seating stress of 7600 psi. Using this gasket stress, I calculate...
  7. ValveEngineer123

    RV sizing for regulator failure case

    I am sizing an RV for a regulator failure scenario. All the literature I can find basically states that to determine the required capacity of the RV, one must calculate the flow rate through the wide open regulator and size the RV to relieve that flow rate. It seems as if the physical...

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