Ukuvulwa nokuvalwa kweIIVAVAVU ZESANGO  ivaliwe, ayiguquki okanye ayikwazi ukuvula nokuvala ngokuqhelekileyo, okanye ayikwazi ukuqhubeka nokuvula nokuvala, ngokukodwa ngenxa ye-jam phakathi kwesiqu sevalve kunye nezinye iindawo, ngokukodwa i-jam phakathi kwe-valve stem kunye nokupakisha.Ngokubanzi

Idlala lokupakisha liyaphambukiswa kwaye libethe isiqu sevalvu

Indlela yonyango: faka ngokuchanekileyo

Ukupakisha kufakwe ngokungalunganga okanye kuqiniswe kakhulu

Indlela yoNyango: qinisa kwangaphambili i-filler kwaye ukhulule i-filler ngokufanelekileyo.

Isiqu kunye nokupakisha idlala lokuluma

Indlela yonyango: ukubuyisela okanye ukulungisa.

Ukuluma okanye ukuluma phakathi kwamalungu

Indlela yonyango: Thambisa isiqu sevalve ngokufanelekileyo.

Imikrwelo kumphezulu wevalve yokutywina, ukukrwela ukukrwela kumhlathi wokukhanya wesiqu sevalve kunye nemikrwelo yokuluma kwindawo ephothiweyo yesikhondo sevalvu, njl. njl ayicocwa, ibangela ukuba umphezulu wokutywina ukrwele;emva kokusetyenziswa okuthile, iinkozo ezinqabileyo zikhutshwa phantsi kokukhukuliseka kwendawo kwaye zinamathele kwindawo yokutywina.Ivalve ivuliwe kwaye ivaliwe.Zibangele ama-brasions.

Indlela yonyango: Sebenzisa iibrasives ngokufanelekileyo, kwaye ucoce indawo yokutywina emva kokusila.

Ukungcola okanye i-welding slag kwi-medium ayicocwanga, ibangela imikrwelo.

Indlela yonyango: coca kwakhona.

IIVAVAVU ZESANGOukhuhla isiqu kumkhono wokupakisha wokucofa kunye nephedi yokupakisha.I-medium equkethe i-boron kwi-medium iya kukhazimla ukuze yenze amasuntswana anzima emva kokuba ikhutshwe.Xa ukupakisha kuthinta i-valve stem, umphezulu we-valve stem uya kuxinzezeleka xa utshintsha.

Indlela yonyango: ukufakela okuchanekileyo, ukulungelelanisa ukucocwa kweengxenye kunye nokuphucula ubunzima bomhlaba we-valve stem.Umtya we-trapezoidal ungcolisekile kwaye imeko yokuthambisa imbi;Isiqu sevalvu kunye namalungu anxulumeneyo akhubazekile

Indlela yonyango: susa izinto ezibiweyo, sebenzisa i-lubricant kwi-valve yobhedu yokushisa okuphezulu ngexesha;lungisa iindawo ezonakeleyo.