I-valve ye-ryring ye-butterfly ephikisana ne-tamper switch i-valve esezingeni eliphakeme nethembekile eyenzelwe ngqo izinhlelo zokuvikela umlilo. Leli valve lifakwe inkinobho ye-tamper, enikeza ungqimba olungeziwe lokuphepha ngokuthola noma yikuphi ukufinyelela okungagunyaziwe noma ukuphazamiseka.