Ukhuselekoivalve4.5A25 yivalve ekhethekileyo ehlala ivaliwe phantsi kwesenzo samandla angaphandle. Xa uxinzelelo oluphakathi kwizixhobo okanye umbhobho wokunyuka ngaphaya kwexabiso elichaziweyo, uxinzelelo oluphakathi kumbhobho okanye izixhobo zinokuthintelwa ukuba zingaphezulu kwexabiso elichaziweyo ngokukhupha iphakathi lenkqubo. Ivalve ezokhuseleko yi-valve ezenzekelayo, esetyenziswa ikakhulu kwi-Boilers, iinqanawa zoxinzelelo kunye nemibhobho. Uxinzelelo lolawulo aludluli kwixabiso elichaziweyo, elidlala indima ebalulekileyo ekukhuseleni ukhuseleko loKhuseleko kunye nokuSebenza kwezixhobo. Inja ekhuselekileyo yokhuseleko inokusetyenziswa kuphela emva kovavanyo loxinzelelo.
IValve yokhuseleko 4.5A25 idlala indima yokukhusela kwiumvelisiInkqubo yokulawula i-hydrogen. Xa uxinzelelo lwenkqubo ludlula ixabiso elichaziweyo, ivalve yokhuseleko iya kuvulwa ukuba inxenye yegesi / i-fluid kwinkqubo ingena kwixabiso lenkqubo, ukuze iqinisekiswe ukuba le nkqubo ayiyi kuba sengozini ngenxa yoxinzelelo olukhulu.