The model KSBJ is designed to release accumulated air pockets from the system, while pressured pipelines. Air pockets increase energy consumption because pumping operation will be at higher water heads to overcome pressured air. KSBJ has function to protect high shock and surge pressure, water hammer and liquid overfl ow from fresh or sea water pipelines. KSBJ air release valve can provide low cast insurance to protect expensive maintenance cost of pipelines and pump systems.