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  1. dchrist21

    Booster Pump Running Off of Curve

    I have had a chance to collect additional operating data for this pump and speak with the mechanic responsible for its maintenance. I will try to answer as many of the questions you have posed, but at this point I don't require any further assistance. I am just posting this information out of...
  2. dchrist21

    Closed Coupled motor to gearbox vs coupling types

    I just did a bit of research into this myself. I have only a small amount of experience in the pump field, but here is what I have to offer: There are two basic methods of transferring power from a motor to a pump. A for a close (not closed) coupled pump, the impeller (or gearbox, in your...
  3. dchrist21

    Booster Pump Running Off of Curve

    This is what I believe to be occurring. By "idle," I meant "not driven by the motor," and did not mean to imply stationary. There is a check valve on the discharge of the pump to prevent reverse flow, so I am confident that is not the case. Dylan Christopherson, PE www.intechen.com
  4. dchrist21

    Booster Pump Running Off of Curve

    I will get some data this morning. Might be Monday before I can post it. Thanks for the help/insight. Dylan Christopherson, PE www.intechen.com
  5. dchrist21

    Booster Pump Running Off of Curve

    DubMac: Yes, there is another pump in the system. The primary flow through the loop is provided in a separate part of the facility. This branch loop tees off of the heating supply line (into the suction of the pump) and discharges into the return line. The pressure differential between the...
  6. dchrist21

    Booster Pump Running Off of Curve

    OK, I know that a pump can never run off its curve, but I'm not sure how to address this issue. The pump is a booster that serves a branch of a facility heating loop. Suction is connected to the hot water supply, discharge pumps through a heat exchanger back to the return line. I've attached...

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