Bawul ɗin ƙafa yana sanye da mashigin ruwa da yawa akan murfin bawul kuma an sanye shi da allo don rage yawan tarkace da rage yuwuwar toshe bawul ɗin ƙafa.Ko da yake bawul ɗin ƙafa yana sanye da allon hana rufewa, bawul ɗin ƙafar gabaɗaya ya dace da tsabtace kafofin watsa labarai, kuma bawul ɗin ƙafar bai dace da kafofin watsa labarai tare da ɗanko da barbashi ba.
Bawul ɗin ƙafa wani nau'i ne na bawul ɗin ceton makamashi, wanda galibi ana girka shi a ƙarshen ƙafar bututun tsotsa ruwa na famfon ruwa don hana ruwa a cikin bututun ruwa komawa zuwa tushen ruwa, yana kunna aikin kawai. shiga amma baya fita.