Pumps & Motors - Water Pump, Single Phase Pumps :: V-Guard

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Pumps & Motors comprising of Water Pump and Single Phase Pumps from V-Guard adds high power using energy saving technology that are dependable by homes and industry.

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Pumps & Motors - Water Pump, Single Phase Pumps :: V-Guard

  1. 1. Tips For Buying Centrifugal Pumps www.vguard.in
  2. 2. <ul><li>Here are some important tips while buying a centrifugal pump. </li></ul><ul><li>Pump Selection </li></ul><ul><li>Avoid over sizing of your pumps as this results in uneconomical operation of the pump. It also narrows the safe operation range of capacities of the pump. Avoid pumps with a really low NPSH (Net Positive Suction Head) and remember not to falsify the actual NPSH. Resorting to this leads to choosing of pumps with excessively high suction speeds and high minimum flows. Evaluating the advantage of variable speed operation will be useful as it is efficient and results in longer pump life. Be careful not use a mechanical seal when packing is more than adequate for the intended use. </li></ul>
  3. 3. <ul><li>Installation </li></ul><ul><li>Ensure adequate submergence over intake piping to prevent formation of vortex. Suction elbows should always be placed over the in the plane perpendicular to the shaft and not parallel. Pump casing should not be used as an anchor for the pump. All expansion joints and supports should be anchored independently. Providing adequate flow, pressure and temperature instrumentation for the pump are imperative. Pump and driver alignment have to be rechecked under normal operating conditions. </li></ul>
  4. 4. <ul><li>Operation </li></ul><ul><li>Ensure you do not operate pumps below the recommended minimum flow or when suction valve is closed. Ensure you do not run two pumps parallel when one pump can carry the load. Make sure that air is kept out of the pump, pumps are made to carry liquids only. Stop the pump immediately is any excessive noise or vibration occurs. Run spare pumps once in a while to check their efficacy. </li></ul>
  5. 5. <ul><li>Maintenance </li></ul><ul><li>Running performance test at frequent intervals will help you to follow increased internal clearances. Avoid opening of pumps unless any evidence proves it necessary. Lubricating or greasing of lubricated bearings are not necessary, avoid doing that. Packing stuffing boxes needs experienced hands, leaving it to inexperienced hands will prove detrimental. Avoid tightening stuffing box glands too much. Leakage needs to flow smoothly to cool and lubricate properly. Always use original spares excepting in an emergency. Examine and recondition your pump regularly. Look out for corrosion in your pumps. Always new gaskets in your pumps when overhauling them. </li></ul><ul><li>Follow these steps and your centrifugal pump will serve you well for years. </li></ul>
  6. 6. Contact Us <ul><li>www.vguard.in </li></ul>

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