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  • Users: a1987
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  1. a1987

    WESTCO PUMPS

    Dear Sirs, could anyone explain me what is a WESTCO type pump? Regards
  2. a1987

    Centrifugal pumps with backlog impeller

    thank and best regards
  3. a1987

    Centrifugal pumps with backlog impeller

    why not in compliance?
  4. a1987

    Centrifugal pumps with backlog impeller

    Backlog impeller = recessed impeller
  5. a1987

    Centrifugal pumps with backlog impeller

    Dear Sirs i would have an important question to do..Do centrifugal pumps with backlog impeller (see attached file) in compliance with API 610 11th ed.?? thx a lot and best regards
  6. a1987

    Technical Bid evaluation

    Dear DubMac before answering please read carefully. if I was not able to explain properly, let me note! i have to do a technical bid evaluation for 5 gear pumps, 5 canned and 5 reciprocating pumps. For 5 gear: what are the parameters to consider in the process of tabulation and what I have to...
  7. a1987

    Technical Bid evaluation

    Dear Sirs, i have to do several technical bid evaluation for gear, canned and reciprocating type pumps. Could you give me an excel file for example of a technical bid comparison / evaluation for those pumps type? Thanks
  8. a1987

    Inclusion in the scope of supply

    Dear sirs i have to define with process section the api plans sketch... i would have by you a confirmation referred to api plan 32. The attached file describe api plan 32 as per api 682 and is define that "Items to the left of letter "a" shall be supplied by vendor; items to the right are the...
  9. a1987

    API PLAN 32+53

    i wanna double pressurized system 'cause process client data sheet needs double pressurized system... i think 53C for slurry fluid is not indicated due its attitude to diry and clog... 53 B required low pressure alarm and operators control too..this system is not very compact..imagine 53B...
  10. a1987

    Caustic Soda percentage

    30 °C pumping temperature.. the pump are installed outdoor and temperature is -28 °C
  11. a1987

    Caustic Soda percentage

    Dear Sirs I would like to know how the percentage of caustic soda influence the choice of a pump... in particular, change anything if the percentage of caustic soda dissolved in water is 15% or 25%? in my opinion, yes it does...but i would like to have your opinion. thanks a lot
  12. a1987

    API PLAN 32+53

    api plan 32 + 53 in the system i have described is used maybe due to slurry fluid... in may opinion is better to use 53 A...53 C is not applicable and 53 B is for high temperature
  13. a1987

    API PLAN 32+53

    Dear Sirs, what do you think about matching API PLAN 32 + 53 on a OH2 pump?
  14. a1987

    Canned Motor Pump

    Dear Sirs, i have received a process data sheet for a canned motor pump.. in this document should i find the indication of containment/control system and the indication of cooling system for bearings?? i think yes, but i'm very doubtful... thanks
  15. a1987

    "Curbed area"

    Dear sirs in a pump P&ID i have found this reads "this equipment shall be installed in a curbed area".. could anyone explain me what is a curbed area? what protections and precautions should i take in account for the pumps? best regards
  16. a1987

    External downstream pressure switch

    ok, thank you... think that those pumps are moved by a VFD.. this info changes anything?
  17. a1987

    External downstream pressure switch

    Dear Sirs for several gear pumps, on process data sheet is present the indication of an external downstream pressure switch...and for those pumps is not present the indication for internal relief set.. i think internal relief valve should be provided and its set pressure too, regardless...
  18. a1987

    Magnetorestrictive Level Measurement

    Dear Sirs in a P&ID for a Gear Pump, is present this note "magnetorestrictive Level Measurement".. The instrumentation should be supplied by pump vendor or this is an instrumentation department problem??
  19. a1987

    Gear Pump

    ok thank you for the answer!! at the same time i think that the presence of internal relief valve doesn't involve the assence of PSV on the recirculation line.. in my opinion the second one is a protection for the line, infact is set in function of the line rating. do you agree?
  20. a1987

    Gear Pump

    Dear Sirs i have received some process data sheet for gear pumps. i have notice that in three of ten data sheets is not expressed at what pressure is set internal relief valve... in your opinion why is not defined set value for internal relief valve of this three pumps?? is this a value that...

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