Yemveliiivalvu zesango lemelaZisebenza kakuhle kulawulo lokuhamba komoya oluhamba kwicala elinye, kodwa kudla ngokubakho umngcipheko wokuvuza xa zijongene nokuhamba komoya okuhamba kwicala elinye. Ngokusekelwe kwivalvu eqhelekileyo yokunqunyulwa komoya, ngophando nophuhliso, imveliso iphuculwe, kwaye imveliso entsha "ivalvu yeplagi ye-seal soft-way ezimbini" ikhuthaziwe ukuqinisekisa ukuba isiphumo sokutywina esisebenzayo sokungavuzi manzi sinokufezekiswa kuyo nayiphi na indlela yokuhamba komoya.

Uyilo olutsha lutshintsha ukufakelwa kwerabha yokutywina, luthatha indawo yomcu werabha okwi-grooveivalvu yesango le-sluiceumzimba ngerabha elastiki, ejikelezwe emzimbeni wevalvu. Le nzuzo kukusombulula ingxaki yokutshintshwa okunzima emva kokulahleka kokutywinwa, ukuba ukulahleka kokutywinwa, kunokutshintshwa kwindawo, ukufakwa lula, ukuqhaqhwa lula kunye neengenelo zokugcinwa, ukunciphisa impembelelo kwishedyuli yemveliso.

Ukongeza, umcu werabha wokutywina omnye utshintshwa ube ngumcu wokutywina omacala amabini kunye nomcu wokutywina omaleko amabini ukusombulula iingxaki zokungaxinzelelwa ngasemva, nokubaivalvu yesango ejikelezileyoUkuba ipleyiti ixinezelekile phambili okanye kwicala loxinzelelo, ukuguquguquka kwe-elastic kwerabha kunokudityaniswa ngokusondeleyo nepleyiti yevalvu, ukufezekisa ukutywinwa okumacala mabini, ukuphucula ukutywinwa, kunye nokufezekisa ukuvuza okungekhoyo.

Imveliso yethu entsha yevalvu yentsimbi yokutywina imela emacala mabini ifanelekile kumanzi empompi, amdaka, kushishino lonyango lwamanzi, uphawu oluphambili kukuzitywina okudadayo, uxinzelelo olumacala mabini, lunokufezekisa ukutywina okumacala mabini, ukutywina okuphezulu. Akulula ukuvuza, inendawo encinci yokufaka, uxinzelelo oluphantsi lokusebenza, akukho lula ukuqokelela inkunkuma, isango loxinzelelo oluphezulu alinangcangcazelo, akukho ngxolo, umjelo othe tye, ukumelana nokuhamba okuncinci, akukho lahleko yomahluko woxinzelelo, xa isango livaliwe, uxinzelelo oluphakathi oluthembekileyo lutyhala uxinzelelo lwesango kwelinye icala lesihlalo sevalvu yesango lokutywina ukuqinisekisa umphezulu wokutywina. Olu tshintsho aluphuculi kakhulu kuphela ukuqina kunye nokuthembeka kwevalvu, kodwa lukwanciphisa kakhulu ukulahleka kwamandla kunye nongcoliseko lokusingqongileyo olubangelwa kukuvuza. Emva kokuvela kweevalvu zesango lemela zokutywina ezimacala mabini, inani elikhulu leevalvu ezinqunyiweyo ngokubanzi zitshintshwe zizo.