Gravity Fed Water Pressure?

[growclean]

We ran a cold water line into our room, and plan on using an RO filter into a 45 - 55 gallon container, raised above the ground. If we then just hooked up a standard faucet outlet and hose to the bottom of this barrel, would we have significant water pressure? I can't find a formula that is useful for this small of a project. Any ideas?

Thanks!

 

[rty007]

if what you are asking is: would a dripping system survive that pressure, than yes it would.

 

[Me2]

You could use a bladder type accumulator tank which will maintain a reasonable pressure, an open topped barrel will simply overflow
To calculate pressure from head of water, 27"= 1psi, so a typical barrel will have 1.4psi at the most when its full. 1 bar (14.7psi) = 33ft head.

 

[growclean]

Well, what I am asking is that if I have an approximately 50 gallon tank, sitting on a platform about 4' above the ground, would that be ENOUGH pressure just to water from a hose. How would the bladder type tank work? Do you have any links? I would put a bladder type shutoff in the tank so that it did not overflow by the way.

All I am trying to do is get my watering done without pumping. Seems silly to waste electricity by pumping water if a little ingenuity can accomplish the same.

Thanks!

 

[Me2]

You`ll be fine with gravity feed, as long as the end of the hose is below the minimum water level in the barrel it`ll keep flowing.
As you mentioned "significant" pressure i assumed you needed something like mains water pressure

 

[Lazyman]

It depends on the length and diameter of the hose, as well as the height of the head (mentioned earlier.) For watering by hand it might be a pain, but put a float valve on your RO filter "good" water line inside your res (with a full time overflow valve plumbed in too) and it should remain full. Also check out the tropf blumat auto-waterers, they will eliminate hand-watering and utilize a gravity-fed reservoir like you're planning.

 

[growclean]

Thanks to both!