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  1. nkotari

    Compressor and Receiver Pressure issue

    All our gauges are regularly calibrated. There is no chance of instrument error. There is no DCS and each compressor is controlled by its own OEM inbuilt PLC and HMI. Each compressors transmitters have to be verified, this point is noted. Refer the sketch. Set points: Compressors numbered from...
  2. nkotari

    Compressor and Receiver Pressure issue

    Hi, We have 4 screw compressors of approximately 1200 SCFM, one compressor on VFD. We have continuous variable demand downstream of receivers from 5000 SCFM to 1500 SCFM. When we start the compressors with variable setpoints for all compressors 7 bar max pressure for one of the compressor, all...
  3. nkotari

    Tapped Holes in Valve Body instead of Flanges

    A Vendor is supplying Tapped Holes in the body instead of flanges and Tapped holes are threaded to fit Bolts instead of Studs. Is this acceptable? If this is acceptable, if Yes 1) what should be the length of thread / insertion length of bolt 2) Bolt diameter and number of bolts is identical...
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