How to know if you have 25 psi

[joevan]

I probably do as the pressure gets the water up to the 3rd floor with no problems. Center city Philadelphia. I guess it is ok. How about this Gerber, worth trying?

[RicodJour]

Why do you need pressure-assist if you have adequate pressure? The noise from some pressure-assisted toilets is quite loud.

Toto has probably the best toilet reputation. I find even their low volume tank toilets work just fine.

R

[larry moe 'n curly]

Not unless you're referring to those $3,000 computerized toilets that are common in Japan.

Here's Consumer Reports' 8/2009 evaluation:

Out of 19 single-flush units tested, the best Toto ranked #9 (great for flushing solids, average for liquids), the other Toto, #15 (great for solids, awful for liquids).

The top 8 flushed both solids and liquids great:

American Standard Champion 4 2002.014 Kohler The Complete Solution Cimarr=F3n K-n456 Kohler Highline Comfort Height K-3493 Gerber Avalanche 21-817 Gerber Ultra Flush 21-318 American Standard Flowise Cadet 3 2403.128 Gerber Ultra Flush 21-302 8 American Standard Cadet 2366.100

Also the #13 ranked toilet flushed just as well as the best, and like its #6 cousin it used only 1.28 gallons per flush:

American Standard FloWise Cadet 3 2835.128

However both of those American Standard FloWise Cadet 3 toilets were only average at cleaning the bowl, while all the others mentioned above, including the Totos, were above average in that respect.

[Tony Hwang]

25PSI? In our city every house has water meter, pressure gauge and regulator. Our house has static 60PSI typical.

[joevan]

Hi,

Thanks, makes sense.

[HeyBub]

Look around the neighborhood for the water tower supplying your street. Most water distribution systems depends on gravity for the resulting pressure. The formula is 0.433 x height of tower = p.s.i. A tape measure, angle deducer, and trigonometry will easily give up the height of the tower.

So a water tank of 115 feet will yield a water pressure of 50 psi at street level. Assuming you have such a tower in your neighborhood, on the third floor, you'll have to subtract 25' of head (2.5 stories x 10' each). That yields:

(115 - 25) x 0.433 = 39 psi.

Alternatively, for the third floor, subtract about 11 psi from the street level pressure (25 x 0.433).

[Harry K]

Or trot down to a hardware store and get a cheap pressure gauge with a rubber nose that you hold on a faucet.

Harry K

[HeyBub]

That will certainly avoid the math (Maths is hard), but lacking sufficient skills in trigonometry, how's he going to count his change at the hardware store?