Ngenxa yokukhethwa kwezinto zokutywinwa yi-EPDM okanye i-NBR.Ivalve yesango yokutywina ethambileyo ingafakwa kubushushu obuphezulu obungama-80°C.Ngokuqhelekileyo isetyenziswa kwimibhobho yokucoca amanzi kumanzi kunye namanzi amdaka.Iivalvu zesango lokutywina ezithambileyo ziyafumaneka kwimigangatho yoyilo eyahluka-hlukeneyo, njengeMigangatho yaseBritani, uMgangatho waseJamani, uMgangatho waseMelika.Uxinzelelo lwegama levalve yesango elithambileyo yiPN10,PN16 okanye iClass150.