Kwagura valve nigice cyingenzi cya sisitemu ya firigo, mubisanzwe yashyizwe hagati yububiko bwa silinderi n'amaso. Kwagura valve bituma filime inoze mubushyuhe bwo hagati kandi igitutu kinini gihinduka igikona gito cyane nubushyuhe buke binyuze mu bushyuhe bwayo, hanyuma firigo ikurura ubushyuhe mu guhumeka kugirango ikoreho ingaruka. Kwagura valve igenzura valve ihinduka ihinduka ryinshi rirangije guhubuka kugirango birinde ibibanza byumukono hamwe na phenomenon yo gukomanga silinderi
Muri make, valve ya kwaguka igizwe numubiri, ubushyuhe bwumvikana paki hamwe na tube
Imiterere nziza yakazi ya Valve ya Kwagura igomba kuba iyo guhindura gufungura mugihe nyacyo no kugenzura igipimo cyurugendo hamwe nimpinduka zumutwaro wa evapotor. Ariko mubyukuri, kubera hysteressis yo kwimura ubushyuhe mubushyuhe bwumva ibahasha, igisubizo cya valve ya kwaguka ahora ari igice cyo gukubita buhoro. Niba dushushanye isaha-igishushanyo cya valve yo kwaguka, tuzasanga atari umurongo woroshye, ahubwo ni umurongo wumuhondo. Ubwiza bwa valve ya kwaguka bugaragarira muguhuza umuraba. Nini amplitude, buhoro buhoro reaction ya valve hamwe nubuzima bwiza
