Waalka kubbadda ee birta liilsan, waalka globe, gate valve marka la isticmaalo, kaliya si buuxda u furan ama xiran, ha u oggolaan in la sameeyo nidaaminta qulqulka, si looga fogaado in la xidho nabaad-guurka dusha sare, xidhashada degdega ah. Albaabka albaabka iyo furayaasha globe ee sare waxay leeyihiin qalab daboolaya, taayir gacanta oo xagga sare noo socota...
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