Ukusetyenziswa kwephepha lerabha ye-asbestos kumzi-mveliso wokutywina wevalve kunezi nzuzo zilandelayo:

Ixabiso eliphantsi: Xa kuthelekiswa nezinye izinto zokutywina ezisebenza kakhulu, ixabiso lephepha lerabha ye-asbestos lifikeleleka ngakumbi.

Ukumelana nemichiza: Ishiti lerabha ye-asbestos inokumelana nokugqwala okulungileyo kwindawo ethile eneempawu zekhemikhali ezithambileyo, ezinokuhlangabezana neemfuno zeemeko zokusebenza ngokubanzi.

Ukugcinwa okulula: Ngenxa yokuba i-rubber sheet ye-asbestos kulula ukuyiqhuba kunye nokutshintshwa, ikulungele ngakumbi ukugcinwa kwevalve.

Ingxaki enkulu yephepha le-rubber ye-asbestos kukuba nangona izinto ze-gasket zongezwa nge-rubber kunye nezinye iifayili, azikwazi ukuzalisa ngokupheleleyo ama-pores amancinci adibanisa, kwaye kukho ukungena kokungena. Ngoko ke, kwindawo engcolisa kakhulu, nokuba uxinzelelo kunye nobushushu abukho phezulu, azinakusetyenziswa. Xa isetyenziswe kwimithombo yeendaba yeoli yobushushu obuphezulu, ngokuqhelekileyo kwixesha elizayo lokusetyenziswa, ngenxa ye-carbonization ye-rubber kunye ne-filler, amandla ayancitshiswa, izinto eziphathekayo ziyakhululeka, kwaye kukho ukungena kwi-interface kunye nangaphakathi kwe-gasket, kwaye kukho i-coking kunye nomsi. Ukongezelela, i-rubber sheet ye-asbestos iboshwe ngokulula kwindawo yokutywinwa kwe-flange kwiqondo lokushisa eliphezulu, elizisa inkathazo enkulu ekutshintsheni i-gasket.

Kwimeko eshushu, uxinzelelo lwe-gasket kumajelo ahlukeneyo luxhomekeke kumlinganiselo wokugcinwa kwamandla we-gasket material. Kukho amanzi ekristale kunye ne-adsorbed yamanzi kwi-asbestos fiber material. Kwi-110 ℃, i-2/3 yamanzi e-adsorbed phakathi kwe-fibers iye yagqithiswa, kwaye amandla okuqina eefayili ancitshiswa malunga ne-10%. Kwi-368℃, onke amanzi e-adsorbed aphuma ngaphandle, kwaye amandla okuqina efayibha ancitshiswa malunga ne-20%. Ngaphezulu kwe-500 ℃, amanzi ekristale aqala ukuna, kwaye amandla aphantsi.

Iphepha lerabha le-asbestos liqulethe i-ion ye-chloride kunye ne-sulfide, kulula ukwenza iiseli ze-galvanic ze-corrosion ezine-flanges zensimbi emva kokufunxa kwamanzi, ngokukodwa umxholo wesulfure wephepha le-asbestos elimelana ne-oyile liphezulu ngokuphindwe kaninzi kunephepha lerabha ye-asbestos eqhelekileyo, ngoko ayifanelekanga ukusetyenziswa kwimithombo ye-non-oily. I-Gaskets iya kudumba kwi-oyile kunye ne-solvent media, kodwa ngaphakathi koluhlu oluthile, akukho mpembelelo ekusebenzeni kokutywinwa.

Nangona kunjalo, kubalulekile ukuqaphela ukuba i-asbestos ichongiwe njengento enobungozi, kwaye ukusetyenziswa kwamaphepha erubha ye-asbestos kunokubonisa ingozi enokubakho kwimpilo kunye nokusingqongileyo.