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  1. Thread: water meter

    by mak123
    Replies
    5
    Views
    830

    HJ, so, sounds when high flows are going...

    HJ,

    so, sounds when high flows are going through is no problem?
    thanks
  2. Thread: water meter

    by mak123
    Replies
    5
    Views
    830

    not for my house, it's in my commercial store. I...

    not for my house, it's in my commercial store.
    I have two meters, one managed by city and the other by me, both 2", the city meter located in horizental line, and no noise, but mine connected in...
  3. Thread: water meter

    by mak123
    Replies
    5
    Views
    830

    water meter

    my water meter(2") is in vertical line, and some noises from it when water running, is this OK? or something wrong?
  4. Replies
    10
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    1,932

    my problem is as I said, lower water prssure and...

    my problem is as I said, lower water prssure and not enough water supply.
  5. Replies
    10
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    1,932

    the city water folks came and told me the old...

    the city water folks came and told me the old abandoned city meter located in man-hole could cause this restirction problem, so he will schedule to take it out, this work can be done night and need...
  6. Replies
    10
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    1,932

    city pressure measured in frire-hydrant is 52psi,...

    city pressure measured in frire-hydrant is 52psi, but entrance point in the building 2inch pipe, the pressure is 40psi, there is 2inch underground copper pipe runs between outside city main(16inch)...
  7. Replies
    10
    Views
    1,932

    city water pressure

    I have a small store and the water pressure is normally 40psi, my question is is this city water supply pressure suppose to sustain 40psi continulously?
    or it could be fructulated depending on water...
  8. Replies
    6
    Views
    684

    The reason for second tank is one tank is not...

    The reason for second tank is one tank is not enough volume of water so I wanted to connect two tanks...

    How many pressure tank I need? one or two? where to put it...after pump or before pump?
    ...
  9. Replies
    3
    Views
    674

    so, connection runs from electricity panel to (1)...

    so, connection runs from electricity panel to (1) float switch ==> (2) serial connection to pressure switch==> (3) then to pump, right? thanks
  10. Replies
    3
    Views
    674

    float and pressure switches

    Like below drawing, pump connects to tank and I need to control pump like this: (1) pump starts when pressure in pipe drop under 30psi, pump stops when pressure reachs 70 psi, and (2) pump stops when...
  11. Replies
    6
    Views
    684

    controlling pump

    Like below drawing, pump connects to tank and I need to control pump like this: (1) pump starts when pressure in pipe drop under 30psi, pump stops when pressure reachs 70 psi, and (2) pump stops when...
  12. Thread: 14feet height

    by mak123
    Replies
    6
    Views
    864

    14feet height

    if 2000G of water tank is located on the roof and the height is 14feet,then what is the water pressure in 2' pipe down from tank to floor? thanks
  13. Thread: pressure

    by mak123
    Replies
    1
    Views
    539

    pressure

    if 2000G of water tank is located on the roof and the height is 14feet,then what is the water pressure in 2' pipe down from tank to floor? thanks
  14. Replies
    8
    Views
    1,079

    which one is better

    which one is better?

    1) put water storage poly tank(2,000) G on the roof and use natural pressure generated from the elevation of tank, which is around 25ft height

    2) put the water tank on the...
  15. Thread: auto stop

    by mak123
    Replies
    2
    Views
    644

    auto stop

    How to stop pump automatically(not mannualy) when connected water storage tank near empty?
    I understand dry running of pump is not good, so I need to shut-off pump when the storage tank almost...
  16. Replies
    1
    Views
    673

    tank and pump; how to stop pump

    How to stop pump automatically(not mannualy) when connected water storage tank near empty?
    I understand dry running of pump is not good, so I need to shut-off pump when the storage tank almost...
  17. Thread: Float valve

    by mak123
    Replies
    4
    Views
    753

    Do you mean less expensive one is better?

    Do you mean less expensive one is better?
  18. Thread: Float valve

    by mak123
    Replies
    4
    Views
    753

    which pump is better? berkkeley or goulds

    which pump is better? berkkeley or goulds
  19. Thread: Float valve

    by mak123
    Replies
    4
    Views
    753

    Float valve

    Can Float Valve in the water tank shut off in-coming water line of 40psi city line? thanks
  20. Thread: 7HP pump

    by mak123
    Replies
    1
    Views
    476

    7HP pump

    Can someone recommend 7HP jet and cetrifugal pump which has 3" connector? what's the pro and con between jet and cetifugal pump? Thanks
  21. Replies
    2
    Views
    619

    what kind of valve

    In storage water tank, what kind of valve we can use to shut-off water in-let when tank is full? ( maybe dead rock valave??)
  22. Thread: pump size

    by mak123
    Replies
    19
    Views
    1,360

    calm mean I don't want noisy, I need smooth and...

    calm mean I don't want noisy, I need smooth and not making too much sound...

    yes, 2 phase, 230V
  23. Thread: check valve

    by mak123
    Replies
    4
    Views
    1,320

    Then, which type of check valve is least pressure...

    Then, which type of check valve is least pressure drop? thanks
  24. Thread: check valve

    by mak123
    Replies
    4
    Views
    1,320

    check valve

    Is there any head loss ( pressure drop/loss) when water runs through a check valve(back-flow preventor)? thanks
  25. Thread: pump size

    by mak123
    Replies
    19
    Views
    1,360

    Gary, If I use 3" or 4" pipe, then it's OK? I...

    Gary,

    If I use 3" or 4" pipe, then it's OK?
    I don't want to use submersible, I want to use jet or centrifugal, but which is good?
    what HP pump do I need to generate 100GPM through 3"(or 4")...
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