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  1. b1

    Vibration at pump recirculation minimum orifice outlet line

    Thank you checman and Pumpkin for the information! Regarding what kind of orifice, we are currently using a single stage, plate type of orifice (Flange). Thickness is 1/4 inch as per calculation and recommendation of pump vendor. Regards, b1
  2. b1

    Vibration at pump recirculation minimum orifice outlet line

    We have a recirculating line at pump outlet equipped with a minimum orfice. However, we experienced a vibration at the outlet of the minimum orifice going to the dearator tank (2.7 barg). Pump discharge pressure is at 24 barg. Feed water flow is at 17.5 m3/h. Is the vibration caused by too...
  3. b1

    NG leakage for threaded fittings

    Is the probability of a gas leakage is high if in case fittings for pipings and valves would apply threaded joints for small bore piping (2 inches and below). We would like to justify that threaded fittings / valves for this services would also be safe aside from ease of maintenance.
  4. b1

    Safety Valve relieving capacity

    A pleasant day, I was working on a safety valve relieving capacity and I would like to confirm my situation; we have a boiler with a superheater and there are two safety valves on each. The relieving capacity of the boiler is >75% (ASME sec. 1 , 67.1) of the total capacity while for the...
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