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  1. m2609

    How Fill Mechanical Data Sheet for a Pump covering 2 different operation condition?!!!!!

    Ops, Trim the impellars!
  2. m2609

    How Fill Mechanical Data Sheet for a Pump covering 2 different operation condition?!!!!!

    I assume this is a centrif pump, API 610? You should specify the worst’s case condition, i.e. highest head and flow, once you receive the pump curves from the pump supplier you should check that any other operating conditions the pump may need to work in fall within the limits of the curve, i.e...
  3. m2609

    Safety Relief Valve Lifting

    Sorry 'JPiii' but i must be reading your posts wrong? You last post stated "If pressure is held, Air Valves #1 and 2 are opened and full transfer occurs". So does this mean you are hydrotesting the line with the process fluid, in this case an acid! The point of doing a hydrotest is to check the...
  4. m2609

    LPG Pump for Low NPSH duty

    hi TD2K, Yeah, thought about that already, but typically canned pumps are for quite high flow rates (or high compared to this duty!). I think I’m going to have to go back to our process department and find out if the pressure in the vessel can be increased as there doesn’t seem to be anything...
  5. m2609

    LPG Pump for Low NPSH duty

    Thanks for the responses, i have emailed both suppliers and waiting on a response. I’m not holding out much hope, based on the info on the websites my duty flow rate is too low. Also the pump will be located in a Zone 1 hazardous area, again based on the websites neither of these supplier have...
  6. m2609

    LPG Pump for Low NPSH duty

    I'm trying to find a pump suitable for the below application but having no joy, pump will be offshore and unfortunately it’s on the lowest level of the platform so no chance to increase the NPSHa. Unfortunately we cannot increase the low low level in the vessel so the static head is fixed. Pump...

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