New CSA model CYCLOPS air valve full bore anti-surge air valve in stainless steel for wastewater, entirely made in AISI 316/Duplex and Super Duplex on request. The exclusive anti hammer feature prevents potential rapid filling and surge related events, while the large float located on the lower part keeps the liquid always away from the upper air release mechanism. A strainer is present at the top, in addition to threaded connection and conveyance systems on request, to pipe out the air. The full bore design ensures the maximum capacity through the kinetic nozzle for the proper protection of the pipeline against the potential of negative pressure condition, coming from pipe burst/draining and possible transients.