I-valve yokwandisa iyingxenye ebalulekile yesistimu yesiqandisi, ngokuvamile efakwe phakathi kwesilinda sokugcina uketshezi kanye ne-evaporator. I-valve yokwandisa yenza isiqandisi esiwuketshezi ekushiseni okuphakathi nokucindezela okuphezulu kube isitimu esimanzi ekushiseni okuphansi kanye nokucindezela okuphansi ngokusebenzisa ukugobhoza kwaso, bese isiqandisi sidonsa ukushisa ku-evaporator ukuze sifinyelele umphumela wesiqandisi. I-valve yokwandisa ilawula ukugeleza kwe-valve ngoshintsho olushisa kakhulu ekugcineni kwe-evaporator ukuvimbela ukusetshenziswa kancane kwendawo ye-evaporator kanye nokwenzeka kokushaya isilinda.
Kalula nje, i-valve yokunweba yakhiwe ngomzimba, iphakheji yokuzwa izinga lokushisa kanye ne-balance tube
Isimo esihle sokusebenza se-valve yokwandisa kufanele kube ukushintsha ukuvuleka ngesikhathi sangempela futhi ulawule izinga lokugeleza ngokushintsha komthwalo we-evaporator. Kodwa empeleni, ngenxa ye-hysteresis yokudlulisa ukushisa emvilophini yokuzwa izinga lokushisa, impendulo ye-valve yokwandisa ihlale iyingxenye yebhithi ehamba kancane. Uma sidweba umdwebo wokugeleza kwesikhathi we-valve yokwandisa, sizothola ukuthi akuyona ijika elibushelelezi, kodwa umugqa we-wavy. Ikhwalithi ye-valve yokwandisa ibonakala ku-amplitude yegagasi. I-amplitude enkulu, ukusabela kwe-valve kuhamba kancane futhi kubi nakakhulu izinga
