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  • Users: TransMech
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  1. TransMech

    DIB-1 ball valve pressure relief device

    Dear Senior, I have a question regarding to DIB-1 ball valve external pressure relief device, due to thermal pressure expansion we have to install external pressure relief device for DPE ball valve in liquid service. The code of ASME B 31.3 section 322.6 which defines that the pressure relief...
  2. TransMech

    TOVs experiences

    Hello, I am wondering anyone has experiences to use TOV (Triple offset valve)on terminal isolation. How the performance of the TOVs? any leaking issues is found through stem or disk. Thanks
  3. TransMech

    Body cavity thermal expansion calculation

    Hi guys, Does someone know how to calculate body cavity thermal expansion pressure? For example, 30inch ball valve, full port, #600class, how much degree increasing of temperture could cause pressure expansion from 1000psig to 1440 psig. Very appreciate.
  4. TransMech

    I ENP and 3 ENP different

    Hi, Who is the expert aware with what's the different between 1Enp and 3ENP on trim, the pipeline operational TEAM and pressure rate will be 149C and ANSI 600. Thanks
  5. TransMech

    SPExSPE

    Hi all, Does somebody has such experiences which is requested SPExSPE seats? Thanks.
  6. TransMech

    Body cavity presure relieving

    Hi all, I'm looking for some instruction or idea regarding body cavity pressure relieving in ball valve. what kind condition is requested body pressure relieving? If the valve is buried, be below ground, whether it is necessary to apply relieving body cavity pressure in liquid service? Thanks.

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