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  1. rattyo

    Control sets

    Thx for that. A former colleague reckoned that you couldnt get the bolts in but Ive noticed in the models at this job im on all the control sets have a weldneck attached to a tee..then a globe valve straight to that...ok....
  2. rattyo

    Control sets

    With a bypass its normally the same size or smaller than the control valve? But can the ball valve be directly attached to the tee. I thought it was not possible to get the bolts in if the flange was directled attached to the tee.
  3. rattyo

    FC Orifice on the Discarge line

    I asked the question to the process engineer again why not have the orifice in the minimum flow line and he came back with this answer ....... Yes, the orifice is there to open the valve in the min flow line. That's why it's also necessary to have the orifice in the main line, else the orifice...
  4. rattyo

    FC Orifice on the Discarge line

    Also there are 2 check valves after the minimum flowline and then a block valve. Is this over the top? I don't know?
  5. rattyo

    FC Orifice on the Discarge line

    Thankyou for replying... Yes there is a minimum flow line which is routing into the Vacuum tower. A 3" line. It's before the check valve and block valve. Sorry I forgot to mention that. Also between the check and block valve they have a 2" closed drain coneection arrangement aswell. Why they...
  6. rattyo

    FC Orifice on the Discarge line

    I'm designing the piping on 2 barrel pumps. They are 8" suction and 6" discarge. My first concern is the suction line because on the P&ID the nozzel is 8" . no reduction at the nozzel. I've spoke to the inexperienced process engineer and he reckons his done the calcs and the will be only a...

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