Air Relief Valve In Water Supply Pipeline Are Provided At

In an industry where flow is an all important factor air release valves play a vital role in maximising irrigation pipeline performance.

Air relief valve in water supply pipeline are provided at.

When installed accurately air release valves allow for greater flow while offering full protection against vacuum during the drainage process. Continuously release air from a pressurized system preventing the build up of air pockets in the pipeline and admit large amounts of air into the system when vacuum conditions occur protecting the pipeline from pressure transients and possible collapse. Prior to the 2010 edition of nfpa 13 only gridded wet pipe systems were required to have this relief valve. The air valves presented in this article automatically control the flow of air or gases in and out of liquid piping systems at all operating conditions.

Tree systems typically have more trapped air than gridded but with air venting becoming more popular for mitigating corrosion also required with the 2016 edition of nfpa 13 there should be less trapped air in all wet pipe systems. Relief valves have set points designed to provide overpressure protection and are beyond the scope of this discussion.