Dry pendent sprinkler yog tsim tshwj xeeb rau cov sprinklers thiab cov kav dej sib txuas uas tej zaum yuav khov ntawm qhov kub thiab txias los yog cov tshuab tua hluav taws tua hluav taws uas yuav tsum tau khiav tawm raws caij nyoog.