Ikakhulukazi izinqubo zamakhemikhali uketshezi olusemapayipini ngokuvamile lunobuthi, lukhipha imisebe futhi luyingozi.Ivalvu yesango yesitimu isetshenziselwa ukuvimbela ukuvuza kwanoma iyiphi ikhemikhali enobuthi emkhathini.Impahla yomzimba ingakhethwa kuzo zonke izinto ezitholakalayo, I-bellow inganikezwa ngezinto ezahlukene ezifana ne-316Ti, 321, C276 noma i-Alloy 625.

• 1) .Izinsimbi zensimbi zivala isiqu esinyakazayo futhi kwandisa ukuqina kwama-valve e-stem seal.
• 2).Imbobo yokuqapha i-Bellows (ongakukhetha): Ipulaki ingaxhunywa nesikhala esingenhla kwezivunguvungu ukuze kuqashwe ukusebenza.
• 3).Ama-stem seal seal seal: a) Isihlalo sangemuva sisendaweni evulekile;b) Ukupakisha kwe-graphite.
• 7).Hhayi njengesikulufu sagrisi sakudala sochungechunge lwesiqu kuphela, ingono kagrisi yakhelwe phezu kwebhonethi yevalvu, singagcoba isiqu, nati kanye nesihlahla ngqo, ingono yamafutha;
• 8).Isondo lesandla eliklanywe ngendlela ehlelekile, impilo yesevisi ende, kulula ukuyisebenzisa, iphephile futhi inokwethenjelwa;