Small Cabin

Small Cabin Forum
 - Forums - Register/Sign Up - Reply - Search - Statistics -

Small Cabin Forum / Off-Grid Living / Water storage tank
Author Message
Rickkrus
Member
# Posted: 26 Aug 2019 18:38
Reply 


I'm planning on storing water in a 270 gallon tank running into a 20 gallon pressure tank then through the cabin. Does my main tank need some type of bleeder valve to equalize air pressure as water is drawn out?

darz5150
Member
# Posted: 26 Aug 2019 18:58
Reply 


I would think so. If it is air tight. You might get vapor locked.

Atlincabin
Member
# Posted: 26 Aug 2019 21:14
Reply 


Or you might collapse the big tank. Most of the big plastic water-specific holding tanks have a pressure relief valve built into the top. I'm presuming you are not pressurizing the big tank.

ICC
Member
# Posted: 26 Aug 2019 21:23
Reply 


The big storage tank needs a vent to both allow air to exit when you fill it and to let air in when water is removed. Sure if filling involves removing a cap and sticking a hose in that opening allows venting. However, a couple of my cisterns have the inlet and exit piping configured in a more or less closed system with valves and or pumps between them. If liquid is added to or removed from a tank provision must be made for air flow. I use a rule of thumb that says the vent line should be no less than one half the diameter of the water inlet or drain pipe. Works for me.

Aklogcabin
Member
# Posted: 27 Aug 2019 09:44
Reply 


I believe it is called a sniffer valve.

KelVarnsen
Member
# Posted: 27 Aug 2019 09:52
Reply 


Not exactly answering your question, but somewhat related...I've been following this couple's off grid construction on YouTube for a bit and they just did a nice job installing a pressure tank. Might find something useful on their channel: Wild Wonderful Off-Grid.

Your reply
Bold Style  Italic Style  Underlined Style  Thumbnail Image Link  Large Image Link  URL Link           :) ;) :-( :confused: More smilies...

» Username  » Password 
Only registered users can post here. Please enter your login/password details before posting a message, or register here first.