Simintin ƙarfebawul ɗin zagaye mai faɗi

Ƙofar faifan bawul ce mai hanya ɗaya da aka sanya a mashigar bututun magudanar ruwa don aikin samar da ruwa da magudanar ruwa da kuma aikin gyaran najasa. Ana amfani da ita don cikawa ko duba matsakaicin, kuma ana iya amfani da ita don rufe shaft daban-daban. Dangane da siffar, an gina ƙofar zagaye da ƙofar faifan murabba'i. Ƙofar faifan galibi ta ƙunshi jikin bawul, murfin bawul da ɓangaren hinges. Ƙarfin buɗewa da rufewa yana fitowa ne daga matsin ruwa kuma baya buƙatar aiki da hannu. Matsin ruwa a ƙofar faifan ya fi na gefen waje na ƙofar faifan girma, kuma yana buɗewa. In ba haka ba, yana rufewa kuma yana isa ga tasirin ambaliya da dakatarwa.