Le valve yebhola yeplastiki ineentlobo ezahlukeneyo zobukhulu kunye neenkcukacha, ezinokubonelela abathengi ngeendlela ezahlukeneyo zokukhetha.
Le valve yokutshintsha ibhola yamanzi ithatha iteknoloji yokugulisa ngokugqibeleleyo, eyenza imveliso igudiswe, kwaye umbhobho oqhotyoshelweyo uqina kwaye awuvuzi.
[Ufakelo olulula] Umbhobho uqatywe ngeglu kwaye uqhagamshelwe kwivalve yebhola ngaphakathi komzuzu omnye.Emva kokufakela, kuthatha imizuzu eyi-15 ukuseta imilo.Emva kweeyure ze-2, inamandla.Emva kweeyure ezingama-24, umphumo wokuhamba kwamanzi ungcono kakhulu.