usually you would be better off trying to get to the root of the problem instead of covering up or compensating for it.anyway here's a link.do you have gal. steel pipes.(i don't know how to spell galvanized)

http://www.plumbingsupply.com/boostcitywaterpressure.html

Thanks. I'll look into the link you provided.As far as I can tell there's copper and pvc piping,I just don't know where to begin checking for problems.Someone mentioned that I needed to be sure my main valve(the city valve)outside was completely open should I start there?

checking the screens on the faucets.they're called aerators.they could be plugged.

and that valve too.

If you always had low pressure then a booster pump is the answer If over a period of time you found the pressure to be decreasing it could be ferrous metal piping or mineral deposits on the inside of the piping

If you open a faucet and then have a pressure drop that is an indication that a valve or possibly mineral deposits are causing the problem because of loss of volume.

I doubt if you will need booster pumps this size

are those some kind of giant braided connectors between the pumps and the pipes to absorb vibrations?

gotta be for a high rise.

is one for back up,i see one is isolated.

i think.

Correct on most accounts

BUT it is not a high rise only 8 stories

The city was out doing work last summer so I know where the valve is in my my yard but don't you need a special key/tool to try and turn it?Is that something I need a pro for or can I manage it on my own?Also thinking of the house faucet by faucet, I had some plumbing reworked in the basement and we installed a utility sink,the pressure from that faucet is great it's the 1st & 2nd floors that suck.

thanks again for your help

The city was out doing work last summer so I know where the valve is in my my yard but don't you need a special key/tool to try and turn it?Is that something I need a pro

Yes in most area's to tamper with the outside main requires a license

I had some plumbing reworked in the basement and we installed a utility sink,the pressure from that faucet is great it's the 1st & 2nd floors that suck.

thanks again for your help

Did you check to make sure the new installation all the valves are fully open and the lines were flushed prior to being placed into service?