Na'urar ɗuma Ruwa

Mantle mai dumama, ko isomantle, wani kayan aikin dakin gwaje-gwaje ne da ake amfani da shi don shafa zafi a cikin kwantena, a madadin wasu nau'ikan wanka mai dumama . Sabanin sauran na'urorin dumama, kamar na'urorin dumama ko na'urorin ƙonawa na Bunsen, ana iya sanya kwantena na gilashi a cikin hulɗa kai tsaye da mantle mai dumama ba tare da ƙara haɗarin fashewar gilashin ba, saboda an rufe abin dumama na mantle mai dumama daga cikin kwantena don hana yawan canjin zafin jiki. Mantle mai dumama na iya samun siffofi daban-daban. A cikin tsari na gama gari, ana saka wayoyi na lantarki a cikin wani yanki na masana'anta wanda za a iya naɗe shi a kusa da kwalba.  Wutar da aka samar wa na'urar, don haka zafin da aka samu, ana daidaita shi ta hanyar rheostat. Wannan nau'in mantle mai dumama yana da amfani sosai don kiyaye zafin da aka yi niyya a cikin mazubin rabawa, misali, bayan an cire abubuwan da ke cikin amsawar daga babban tushen zafi.

Wani nau'in mayafin dumamawa na iya kama da gwangwanin fenti kuma an gina shi a matsayin "kwando" a cikin gwangwani mai siffar silinda (wanda galibi ana yin sa da filastik ko ƙarfe kamar aluminum ). Waje mai tauri na ƙarfe yana goyan bayan "kwando" da aka yi da yadi kuma ya haɗa da abubuwan dumama a cikin jikin mayafin dumamawa. Don dumama abu, ana sanya shi a cikin kwandon mayafin dumamawa.

Sabanin sauran hanyoyin shafa zafi a cikin kwalba, kamar wanka mai mai ko wanka na ruwa, amfani da mayafin dumama ba ya haifar da ragowar ruwa da zai diga daga kwalbar. Haka kuma, mayafin dumama gabaɗaya yana rarraba zafi daidai a saman kwalbar kuma yana nuna ƙarancin yiwuwar haifar da wurare masu haɗari.

 Duba kuma 

 tukunyar tukunya biyu
 Kayan dumama
 Kayan aikin dakin gwaje-gwaje
 Gauze na waya

 Nassoshi 

 Hanyoyin haɗi na waje