Loss of Pressure in Water Main
Loss of Pressure in Water Main
(OP)
Will an air pressure relieve valve work to restore water pressure in a water main?
A service line running from the main going to a bathroom at a campground, keeps going offline at peak usage on the weekends. The bathmroom is most likely a high point in the water system elevation.
Should placement the air valve be in a vault, so it can't be tampered with?
A service line running from the main going to a bathroom at a campground, keeps going offline at peak usage on the weekends. The bathmroom is most likely a high point in the water system elevation.
Should placement the air valve be in a vault, so it can't be tampered with?





RE: Loss of Pressure in Water Main
(At a youth camp put everything in a vault.)
http://virtualpipeline.spaces.msn.com
RE: Loss of Pressure in Water Main
Protecting the equipment from vandalism should be considered, but placing the valve in a vault may create a potential cross connection. Ensure that the discharge point for the valve will not become submerged if the vault were to fill with water.
RE: Loss of Pressure in Water Main
What size is the service line? What is the length of the service line?
RE: Loss of Pressure in Water Main
At peak pressure you must at least have enough input pressure to overcome the height difference (1 bar for each 10 meters (1 bar plus for friction, plus for further downgoing inlet pressure because of added usage to already existing overuse)).
Air will only be sucked into your system if it is empty of water (not enough water pressure to feed the line, or drained at will) or under vacuum (not enough water pressure to feed the line to the top (main acting as a vacuum pump??)).
Air will splutter out together with the water at the tap as you open up the system with a tap if you have positive water pressure to reach the height of the outtake.
Note: Your concern for air as damping or stopping a system would be more valid for a waterborn heating system with radiators with very slow 'natural' circulation, totally closed, with top of radiators as 'air gatherers' when you start the system. But here also you will force out the air pockets if you locate the correct tap for air outlet at the local highpoints. This system is more sensitive for air as water pressure is very low, and local pockets and highpoints many.
RE: Loss of Pressure in Water Main
"keeps going offline at peak usage"
Are you trying to say that the water pressure drops?
RE: Loss of Pressure in Water Main
RE: Loss of Pressure in Water Main
http://virtualpipeline.spaces.msn.com
RE: Loss of Pressure in Water Main
The main water pipe which the 2" PVC connects to is a 6" Asbestos Cement Pipe. The 6" Asbestos Cement pipe is due to be replaced this fall, because it has supposed leaks.
So supply pressure is the issue compounded by numerous leaks which causes the pressure drop at the bathroom.
We are planning on installing a pressure gauge in the branch of the water main.
Thanks for input to all.
RE: Loss of Pressure in Water Main
http://virtualpipeline.spaces.msn.com
RE: Loss of Pressure in Water Main
http://virtualpipeline.spaces.msn.com
RE: Loss of Pressure in Water Main
RE: Loss of Pressure in Water Main
RE: Loss of Pressure in Water Main
RE: Loss of Pressure in Water Main