Lapho usebenza, vala amaqembu amabili ama-valve okuhlola nama-balance valve.Uma ukuhlolwa kuyadingeka, vele unqamule i-high pressure kanye nama-valve ane-low-pressure, vula i-valve yebhalansi kanye nama-valve okuhlola amabili, bese uvala i-valve yebhalansi ukuze ulinganise futhi ulinganise isidlulisi.