I-valve yepulagi ifanelekela ukunqunywa nokugeleza kwepayipi, ngenxa yesakhiwo esilula, inenzuzo yokuvula nokuvala ngokushesha. Kulolu chungechunge, i-NSEN inganikeza uhlobo olungavamile, uhlobo lwesikhindi kanye ne-Inverted Pressure Balance Uhlobo olugcotshwe ngogesi. Siyakwamukela ukuxhumana nathi ukuze uthole isipho noma wenze ngezifiso i-valve yephrojekthi yakho.