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Thank you very much for your replies. The components I design are not required to be compliant with ASME VIII Div. 1 so I am using this code just as a first guess for thickness and bolt selection of the main components. All components are then verified with FE analysis so the sloppy work in the...

Hi, According to ASME II Part D Table 3, the Maximum Allowable Stress S for a Section VIII Div. 1 bolting material is Su/5. However, the default preload stress of a flange bolt according to ASME PCC-1 is 50%Sy, well above the Allowable Stress S. Thus, if preload is applied correctly, the bolt...

@LittleInch @TugboatEng You are right, I have simplified the representation too much. The real configuration includes a bolted connection between the the halves:

@TugboatEng: thank you for your info on FFKM temperature resistance, I will investigate it. @MintJulep: thank you @LittleInch: design pressure is 32 barg @Prometheus21: It is for a ORC Link

Prometheus21, according to this website FFKM reaches almost 320 °C. Link Thank you for your suggestions but I need to find a cheap solution (if really exists)

@Prometheus21: we usually rely on Perfluoroelastomer(FFKM) o-rings for these applications. @TugboatEng: I will check for more info on Copaltite, thank you.

Zeusfaber thank you for you reply. The casing in the middle has to be split in order to carry stator stages. A split-in split carrier is an option that complicates the assembly phase too much, but it might be the only option in this case...

Hi all, I have a problem when trying to seal the pressurized casing in the image below. Initially, I have thought about 2 axial o-rings and 2 longitudinal o-rings (as shown), but I don't know how to avoid possible leakage at the o-ring interfaces. The fluid is cyclopentane at 260 °C. Do you...