Valve e seng ea maemo ke mofuta oa valve e se nang maemo a hlakileng a ts'ebetso. Litekanyetso tsa eona tsa ts'ebetso le boholo li etselitsoe ka ho khetheha ho latela litlhoko tsa ts'ebetso. E ka etsoa le ho fetoloa ka bolokolohi ntle le ho ama ts'ebetso le polokeho. Leha ho le joalo, ts'ebetso ea machining e ntse e latela lipehelo tse amehang tsa maemo a naha.

Moralo oa li-valve tse sa tloaelehang o lokela ho nahana ka ho utloahala le ho khoneha ho tsoa ho kakaretso. Ntle le ho itšetleha ka likhopolo-taba tsa setso, moralo o boetse o hloka lipatlisiso le nts'etsopele e ncha haholoanyane. Ka hona, ka kakaretso, ho na le batho ba maemo a holimo indastering ho phethela mosebetsi o tšoanang, 'me baenjiniere ba tla nehelana ka litšoantšo ka mor'a hore moralo o phethoe.

Mefuta ea li-valve tse sa tloaelehang e arotsoe ka letoto la li-valve tsa likhoerekhoere (heke ea penstock le valve ea flap) le letoto la li-valve tsa metallurgical (valve ea serurubele ea moea, valve ea heke ea slide, valve ea likhalase, valve ea ho ntša molora, jj.)

1. Letoto la li-valve tsa likhoerekhoere

2. Letoto la li-valve tsa tšepe