surge protection 1

[hayderg2000]

I review the design of sewage transmission line from pumping station to sewage treatment plant, found air valve without any surge tank, material pe 100 DN315mm PN10, pipe length 3345 m, IS THAT RIGHT OR NOT

 

[bimr]

Surge valves should be avoided on sewage force mains if possible.

 

[bimr]

Additional pdf

 

[stanier]

Air valves particularly in sewage rising mains should not be relied upon to provide surge mitigation. They are often contaminated with grease and fats. In addition they are poorly maintained and serviced. If you consider them to be as important as a relief valve to protect pipeline integrity then they need to be engineered, registered and maintained.

If you have undertaken a surge analysis you will know if a gas accumulator is the correct solution.