Non standard valve ke mofuta oa valve ntle le litekanyetso tse hlakileng tsa ts'ebetso. Mekhahlelo ea eona ea ts'ebetso le litekanyo li hlophisitsoe 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 mochini e ntse e latela lipehelo tse amehang tsa maemo a naha.

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

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

1. Letoto la li-valve tsa likhoerekhoere

2. Letoto la li-valve tsa metallurgic