Ho sebelisoa ke valve ea ho laola tataiso ea mokelikeli oa mantlha likarolo tsa mantlha, ke tsa sehlopha sa molao; Hangata e sebelisoa ka taolo ea mochini le li-valves tsa indasteri ho laola boemo ba khaello, ho laola tataiso ea phallo ea mokelikeli, e le ho fihlella tataiso ea switch ea valve. Valve e nang le liteishene e ngata e entsoe ka litefiso tsa khase e 'maloa le li-visa tsa valve, li-visa tsa valve tsa ho hokela kapa ho khaola liteishene tse fapaneng tsa khase
