Water preasure

[Pat]

If a filter is placed upstream of your accumulator tank it will not restrict pressure of the delivered water to the house until after the water has run for a while like a long shower or filling a Jacuzzi tub or other uses which would require protracted pump run times.. Filling a cooking pot, washing hands, and other low volume uses will all enjoy good pressure and flow rates. A larger (or additional accumulator tank in parallel with the first) will give longer water use times at high pressure and high flows before too much loss of pressure is noticed.

If you have a low flow (energy conservation type) shower nozzle then even long showers might not give low pressures. Might consider more pumping power in the well pump. I should think 3/4 or 1 HP should be sufficient.

Note to GaryM: Think of filters as resistors and accumulator tanks as capacitors.

[img]/forums/images/icons/smile.gif[/img] [img]/forums/images/icons/smile.gif[/img] Pat [img]/forums/images/icons/smile.gif[/img] [img]/forums/images/icons/smile.gif[/img]

[egon]

Pat:

Think of filters as resistors and accumulator tanks as capacitors.

Brings back bad memories of all those non understood decay equations and matrixes.

Egon

[Pat]

HUH? What has this to do with dentistry or Keanu Reeves movies?

[img]/forums/images/icons/smile.gif[/img] Pat [img]/forums/images/icons/smile.gif[/img]

P.S. e ** -tRC to you buddy!

[turnkey4099]

There have been so many different questions here it was hard to figure where to butt in.

On any well system with problems. Start with the basics - the pump and pressure tank. Get that working right and then proceed.

On the subject of air in tanks and pressure:

The standard setting of residential systems is one of three
20-40
30-50
40-60

Note that it is always 20psi from pump cut-in/cut-out. Get your pressure set adjusted to one of them. 20-40 is not very satisfactory. 30-50 will not give a needle shower at the 30 psi.
40-60 is max recommended for residential as over that causes undue wear on fixtures.

How much air in the tank (the pre-charge)? Always approximately 2 psi below the cut-in.

Important to understanding pressure tank systems:
The Pre-charge ONLY controls how often the pump cuts in/out. It has absolutely no effect on delivered pressure. Thus if you have a low pressure problem it will NOT be due to the precharge.

To illustrate:

Switch at 30/50:
Pre-charge 28: Water is exiting tank at 30 psi at the point pump starts.

Pre-charge 15: Water still exits tank at 30 psi at pump start.

There will be less drawdown and more pump starts at any pre-charge setting other than the optimum (2psi below cut-in)

The pre-charge is only a spring that is compressed by the pump.

With the tank/pump operating correctly any pressure problems will be in plumbing downstream of the tank, plugged up filters is the prime suspect.

Harry K