[Albern]

Hello there, I have a question regarding booster pump (2hp, 50 Hz). Let say I install it after the water meter, would it do any harm to neighbor? Would I rob the water from main supply to the other neighbor house? I'm thinking of installing the pump after a 60 gallon tank which the tank would be install after the water meter. Would it be wise?

[ma0641]

Is your pressure low? What # does it measure at a regulated tap? In regards to your answer, no it won't affect your neighbor or main. It increases pressure and your piping basically limits the flow. Plus, you probably have a back flow preventer in the line. 50 hertz? Where are you located?

[Albern]

We have 4 story building where the 2nd floor is the bakery area, at certain time when all the tap were being used, we're having a low pressure at some tap. When I measured, it was about 10 psi.. The building is at city area, in Sarawak, Borneo. I have not much experience dealing with water pressure and it would great if I can dig some info.

[mygirlsdad77]

Booster pump should solve your problem. Just make sure to install a check valve on the inlet side of the pump so pressure doesn't feed back into main, and the pressure tank needs to be on the discharge side of pump. Or, Google Grundfos MQ series pumps. These pumps are nice because they require no extra pressure tank or switch, and the check valve is also built into the pump. They are a bit pricey, but we have installed a couple dozen of them with excellent results. However, if you do use this pump, I suggest installing a pressure reducing valve on the discharge side of pump to regulate pressure, otherwise, these bad boys will put out 100+ psi. And adding a thermal expansion tank near the inlet of the water heater is a good idea too.

[jlisenbe]

How much pressure do you have when all taps are closed but one? If the pressure is already high, say at 60#, then pressure is not your problem and a booster pump might not be the answer. Opening several taps at the same time can reveal a volume problem as much as a pressure problem. Trying to run several taps off a 3/4" line is going to be a problem when several are open, booster pump or no booster pump.

If your pressure is indeed low, then a booster pump might be the answer. However, it just seems to me that I would put the tank AFTER the pump, not before it. That would give you some reserve volume and would keep the pump from having to cut on every time there is some demand.