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  1. Erfan z

    Fire Pump Motor

    @cdafd Yes it is threaded there is no accessory with the electro-motor or standard requirements to mount an accessory!
  2. Erfan z

    Fire Pump Motor

    @LCREP manufacturer of electro-motor doesn't reply to my emails! if you have Marathon Electrics technical support email, please share it with me. thanks a lot.
  3. Erfan z

    Fire Pump Motor

    Hi, fellas one of our client's inspectors engineer insists that the screw(shown with a yellow circle in the attached picture) is missing and don't accept use in the project. so is there any technical explanation for why this screw is not exist there? also that the other side of the motor has...
  4. Erfan z

    main and reserve pump turn on sequence

    hi fellows; as per client demand, in one of our projects, we have 3 line pump assembly 1 jockey pump and 2 main pumps we arranged the pump turn-on sequence as explained below: 1) after a minor pressure drop, the jockey pump came online and started to raise the pressure 2) if the pressure drop...
  5. Erfan z

    UL listed Fire Pump

    Hi fellows I have a question about these two photos what exactly these appendages are in the pump suction inlet? are they for defusing water flow and helping with the laminar flow or to bear the rotation shaft?
  6. Erfan z

    single pump use for fire pump set

    hi guys; I have some issues with one of my clients. they insist fire pump set must have 3 pumps including 1) the main listed fire pump [UL listed] 2) the supply or emergency listed fire pump and 3) the pressure maintaining pump(jockey pump) these 3 pumps must be assembled as one operating unit...

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