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HJ,

so, sounds when high flows are going through is no problem?
thanks

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...

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

my problem is as I said, lower water prssure and not enough water supply.

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...

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)...

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...

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?
...

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

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...

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...

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

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

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...

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...

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...

Do you mean less expensive one is better?

which pump is better? berkkeley or goulds

Can Float Valve in the water tank shut off in-coming water line of 40psi city line? thanks

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

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??)

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

yes, 2 phase, 230V

Then, which type of check valve is least pressure drop? thanks

Is there any head loss ( pressure drop/loss) when water runs through a check valve(back-flow preventor)? thanks

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")...