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  1. sandriver

    General Pump Overhaul Specifications

    I have an assignment from the power plant manager to put together a general pump overhaul specification which will be used in conjuction with a generated PO to have the plant's spare pumps overhauled at the vendor's shop. I is planned to reference this overhaul specification as pumps are sent...
  2. sandriver

    Flow Through a Circular Annulus

    Does any body have a way to calculate the flow through a smooth concentric circular annulus (assumming water at STP)? Also would like to know if there is a way to calculate the flow through an concentric circular annulus which has (what looks like) square threads? I believe that this is some...
  3. sandriver

    Changes in Pump Performance with Adjustments in Pump Lift.

    I accounted for thermal growth, thrust, and shaft stretch in my calculations, increasing the insertion of the wear ring increased the annulus depth, and should lead to less internal recirculation. My question is; is there a correlation between the wear ring area depth and the change in...
  4. sandriver

    Changes in Pump Performance with Adjustments in Pump Lift.

    I have a one stage mixed flow deep well pump which uses a closed impeller. In our last performance test, we were 0.10 of a pound low from our acceptable limit. I instructed the that the pump lift be adjusted from 5/8" to 3/16". Past performance tests have shown that an icrease of 0.75 lb has...
  5. sandriver

    Can I weld a SS cplg to a CF8M volute?

    Have you looked at the seal configuration? closly? What type of fluid are you using for you seal injection? What type of seal are you using for what model pump? Seal problems usualy have to do with application, conifguration or installation. Malcolm

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