Timapereka ma valavu amitundu iwiri, valavu ya cheke ya ruby ndi valavu ya ceramic.Ma valve cheke awa amagwirizana ndi magawo onse amtundu wa LC.Ndipo amatha kukhazikitsidwa mu mpope wa Madzi ndikugwiritsidwa ntchito limodzi, monga mavavu olowera m'malo mu Waters 1515, 1525, 2695D, E2695 ndi 2795 mpope.