Spec on Air Release Valve Placement
Spec on Air Release Valve Placement
(OP)
Just wondering if there is a general rule as to when to place an air release valve in a water distribution system. I know they are placed at high points in the line, but when is it required? (is there a specific pipe slope or rise that warrants its use?)
I have also heard that if there is a hydrant at the high point, an air release valve is not necessary and also if there is a main stop at the high point, an air release is not necessary. Are these points accurate?
I have also heard that if there is a hydrant at the high point, an air release valve is not necessary and also if there is a main stop at the high point, an air release is not necessary. Are these points accurate?





RE: Spec on Air Release Valve Placement
RE: Spec on Air Release Valve Placement
check this thread for more info
RE: Spec on Air Release Valve Placement
In case you have a house connection at high point, then it wis not necessary to put ARV.
RE: Spec on Air Release Valve Placement
Work with Ventomat once you have built your model. They will be able to tell you which air valves can be left off. Some locations it is advisable that a tee is put in case you ultimately need an air valve there. It is a lot cheaper to put a tee in now rahter than later.
RE: Spec on Air Release Valve Placement
Hope this helps you out a bit.
RE: Spec on Air Release Valve Placement
Modern design techniques recommend a tee at half the main diamter to enable the air to collect where it is exhausted. To say it is not required at design stage results in increased costs to put it in later.
Design the system and have the necessary air valves in place.
A good reference is Advanced Water Distribution Modelling and Management by Haestad (now Bentley).
Geoffrey D Stone FIMechE C.Eng;FIEAust CP Eng
www.waterhammer.bigblog.com.au