Katup sing mbukak utawa nutup dhewe kanthi kekuwatan aliran medium kanggo nyegah medium mili bali diarani
mriksa katup.
Priksa katupkalebu kategori katup otomatis, sing umume digunakake ing pipa ing endi medium kasebut mili menyang siji arah, lan mung ngidini medium kasebut mili menyang sak arah kanggo nyegah kacilakan.
Katup mriksacocog kanggo medium sing resik, ora cocog kanggo medium sing ngemot partikel padhet lan viskositas sing dhuwur.
According to the structure of the mriksa katup, it can be divided into three types that lift mriksa katup, swing mriksa katup and butterfly mriksa katup. Lift mriksa katups can be divided into two types: vertical and horizontal.