Umehluko phakathi kwe-valve yesango le-stem elikhuphukayo kanye ne-valve yesango ye-stem engaphumi

Umehluko esiqwini

I-valve yesango ye-stem ekhuphukayo iwuhlobo lokuphakamisa, kuyilapho i-valve yesango ye-stem engaphumi ayilona uhlobo lokuphakamisa.

Umehluko kumodi yokudlulisela

I-valve yesango le-stem elikhuphukayo isondo lesandla elishayela inadi ukuthi lijikeleze endaweni, futhi isiqu se-valve siphakanyiswe ngokomugqa futhi sehliswe ukuze kuqedelwe iswishi;i-valve yesango ye-stem engaphumi iyisondo lesandla elishayela isiqu se-valve ukuthi sijikeleze, futhi kunezintambo esangweni ezihamba phezulu naphansi ukuze kuqedelwe iswishi.

Umehluko ekusebenzeni

Intambo yesiqu se-valve yesango le-stem engakhuphuki ayikwazi ukugcotshwa, futhi ithintana ngqo nendawo, futhi kulula ukugqwala futhi ibangele umonakalo.Ngokungafani ne-valve yesango ye-stem ekhuphukayo, ukwakheka kwayo kuyasiza ekugcobeni kwesiqu, ngakho-ke i-valve yesango ye-stem ekhuphukayo iyasebenza kakhulu futhi ukusetshenziswa kubanzi kakhulu.

Umehluko phakathi kwesikulufa

I-valve yesango lesiqu esikhuphukayo iyakwazi ukubona isikulufu, kodwa i-valve yesango ye-stem engaphumi ayikwazi ukubona isikulufu.

Umehluko endaweni yokufaka

I-valve yesango ye-stem ekhuphukayo idinga indawo enkulu yokufaka ngoba isiqu se-valve siwuhlobo oluphakamisayo;i-valve yesango ye-stem engavuki iwuhlobo olungaphakamisi futhi ijikeleza kuphela, ngakho-ke kunesidingo esincane sokufaka isikhala.