We have a 3-story (including ground floor) house. We have 2 bathrooms.We need to invest in a water pump to deliver water from ground floor to all floors + 2 reservoir tanks (one located on first floor, and the second tank located on the second floor).Which water pump do you recommend among these:(1) Valco 261PL or Valco 261PT(2) Davey HS50-05TI'd be MOST grateful if you could kindly advice me on any reliable brand that you know (apart the ones that I mentioned). We're basically looking for a very reliable pump up to around $700 (preferably less).BTW, according to you, what's the typical horsepower we should be looking for? Will 1hp suffice??Thank you very much!
I've never heard of those brands, but your TDH is going to be approximately 25 feet (ground to middle of the 3rd floor) plus 92' for pressure (40 psi). Ad at least 5' clearance head and that's 122' TDH. That's also 53 psi, meaning you'll want a pump that with an on-off of 40-60 psi. A centrifugal pump will do that. You'll probably want a minimum of 5-6 gpm. See if you can find a pump curve for the pumps in question and follow the vertical and horizontal lines on the chart and see if it will produce 6 gpm (or whatever volume you want) @ 60psi. Keep in mind that you can compensate for a pump that's a bit shy in volume with a larger pressure tank. Chances are most 3/4hp pumps will do what you need. If you don't have a pressure tank already or don't want to plumb a separate tank to the pump, look for a pump/tank combo. Then all you will have to do is plumb an intake and outlet line. A very good and very reliable American made pump like a Meyers should be way less than $700. The pump itself will probably be half that and a separate pressure tank approximately $175. Steer clear of Chinese made pumps. They may be ok, but finding parts like seals can be nearly impossible. Spending a couple of hundred extra dollars for an American pump will be money well spent when it's still running trouble free 10-25 years later.
I was looking for the similar answers.
If I were you, I would be consulting several local plumbers to see what they recommend. They can give you much better information than any of us can.
Nobody can accurately answer this question until you give more information. To size a pump, you need to know the flow rate you are trying to acheive (gallons per minute) and the total head (feet) you are trying to acheive. GPM is based off the max flow rate of the fixtures you are using at any given time. Fixtures such as toilets and sinks have typical flow rates. Head is calculated by taking your incoming water pressure (psi) and subtracting pressure losses from pipes and fittings (psi) and working pressure of your furthest fixture. For a small building, like a house, you can probably estimate your head to be the height of your building (incoming water pipe to ceiling of top floor). If that distance is 30 feet, you'll want a pump to acheive 30 feet of head at about 5 gpm. 5 gpm will allow for a shower and a sink to run at the same time. Toilets are low gpm unless you are using flush valves instead of flush tanks. I've never heard of Valco or Davey. In commercial applications, I've always used Bell and Gossett, but that may be overkill. Just make sure the pump you are getting is a pressure booster pump and not another kind of pump.
