Valves waa qalabyada dhuumaha ee loo isticmaalo in lagu furo oo la xidho tuubooyinka, la xakameeyo socodka, hagaajinta iyo xakamaynta xuduudaha (heerarka, cadaadiska, iyo socodka) dhexdhexaadiyaha gudbinta. Marka loo eego shaqadeeda, waxa loo qaybin karaa waalka xidha, jeegaga jeegaga, waalka nidaaminaya, iyo wixii la mid ah.

Waalka waa qayb ka mid ah kontoroolka nidaamka gudbinta dareeraha, kaas oo leh shaqooyinka goynta, nidaaminta, leexinta, ka hortagga dib-u-socodka, xasilinta, leexinta ama qulqulka, iyo cadaadiska cadaadiska. Valves loo isticmaalo nidaamyada xakamaynta dareeraha, oo u dhexeeya furayaasha xidhidh ee ugu fudud ilaa kuwa aadka u adag ee loo isticmaalo hababka xakamaynta tooska ah, waxay leeyihiin noocyo kala duwan iyo tilmaamo kala duwan.

Valves waxa loo isticmaali karaa in lagu xakameeyo socodka noocyada kala duwan ee dareeraha sida hawada, biyaha, uumiga, warbaahinta kala duwan ee daxalka, dhoobada, saliida, birta dareeraha ah, iyo warbaahinta shucaaca. Valves waxa kale oo loo qaybiyaa birta birta ah ee shubka ah, alwaaxyada birta ah ee la shubo, valves birta ah, chromium-molybdenum birta valves, chromium-molybdenum vanadium valves birta, valves steel valves, valves caag ah, valves aan caadi ahayn, iwm sida qalabkoodu yahay.