Ivalve yentsimbi engenastainless sisixhobo solawulo lokuqukuqela esisetyenziselwa ukulawula, ukuqala, okanye ukumisa ukuhamba kolwelo okanye iigesi kumbhobho. Isebenza ngebhola ejikelezayo enomngxuma kumbindi wayo; xa ihambelana nokuhamba, ivumela i-passage epheleleyo, kwaye xa ijikeleza i-90 degrees, ivimba ngokupheleleyo ukuhamba. Iivalve zebhola zensimbi ezingenasici zixabiswa ngokukodwa ngenxa yokunganyangeki kwazo, ukuqina okuphezulu, kunye nokukwazi ukuphatha uxinzelelo, okwenza ukuba zilungele iimeko ezifunayo. Zisetyenziswa ngokubanzi kumashishini afana nokusetyenzwa kweekhemikhali, i-oyile kunye negesi, ukutya kunye nesiselo, amayeza kunye nonyango lwamanzi. Ezi zivalo zifanelekile kuzo zombini / ukucima kunye nezicelo ze-throttling, ezinikezela ngokukhawuleza ukusebenza, i-torque ephantsi, kunye nokutywinwa okuqinileyo-nangona emva kwexesha elide lokungasebenzi. Ukuhambelana kwabo kunye noluhlu olubanzi lwemithombo yeendaba, kunye nokhetho olufana nentambo, i-flanged, okanye iziphelo ezidityanisiweyo, zizenza zisebenziseke ngeendlela ezahlukeneyo zoqwalaselo lwenkqubo. Ngokubanzi, iivalve zebhola zensimbi ezingenasici zibonelela ngokuthembekileyo, ukugcinwa kokusebenza kakuhle kwiinkqubo zokurhweba kunye nezoshishino.