low water pressure
low water pressure
(OP)
I have 3 floor building. There is not enough water pressure in taps and bath rooms. the existing 2 set booster pump is GRUNDFOS CR 20-02. Water flow is 92 gallon and 72ft head. the system vet old, I wand upgrade the system with higher capacity. I got proposal with LOWARA pump, with same flow rate and 144 feet head. MODEL SV-22 04. What you think, does it work and solve the problem? Pipe size 2inch ppr.
thanks
moideen
thanks
moideen





RE: low water pressure
In theory the Lowara should do the job and give higher flow and pressure from the system.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: low water pressure
RE: low water pressure
You should check the pressure coming into the building, the pressure on the discharge of the pump, and the pressure on the 3rd floor prior to purchasing a new pump.
Yes, it should provide the same flow at a higher pressure.
RE: low water pressure
RE: low water pressure
If no other outlets are open, do you have enough pressure and flow at the taps on the top floor?
If yes, then I suspect you have too much flow going on normally and you need to add flow capacity as well as pressure.
Maybe your pump is old and not able to supply all the outlets?
Mind you what I assume is 92 US gallons per minute is 350 litres per minute. This seems quite a lot, but how many flats / units etc does it feed?
You need to work out what your demand is before you decide on the size of a new pump.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: low water pressure
RE: low water pressure
RE: low water pressure
RE: low water pressure
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: low water pressure
http://www.amwater.com/files/2012%20fix%20ct%20dat...
RE: low water pressure
RE: low water pressure
Review the upload below and you should be able to design the system.
Note that this is a webinar coming on this application:
https://vts.inxpo.com/scripts/Server.nxp?LASCmd=AI...
RE: low water pressure
RE: low water pressure
RE: low water pressure
https://www.cedengineering.com/userfiles/Potable%2...
RE: low water pressure
thanks
moideen
RE: low water pressure
RE: low water pressure
RE: low water pressure
RE: low water pressure
RE: low water pressure
RE: low water pressure
RE: low water pressure
RE: low water pressure
RE: low water pressure
The pipe velocity is normally designed to maintain a velocity of 6 ft head loss/ 100 ft to minimize piping noise.
Note that the spreadsheet values are conservative, and the water use will never exceed those values in the spreadsheet. I see that you are in the Middle East. There is more water usage here in the States than the rest of the world and the spreadsheet reflects it.
The drawing is hard to read, it would be easier if you printed it in gray scale.
RE: low water pressure