Abstract: An apparatus includes a housing (101), a fill tube (107) disposed within the housing (101), the fill tube (107) having a fluid inlet (125) at one end and a fluid outlet (127) at another end. The fluid outlet (127) is disposed near a passage (103) of the housing (101) such that fluid entering the fluid inlet (125) exits the housing (101) through the passage (103). A filter (113) is disposed outside the fill tube (107) and inside the housing (101), such that unfiltered gases from the passage (103) are capable of entering the filter (113). A gas outlet (121) is integrated with the housing (101), such that filtered gases from the filter (113) are capable of exiting the housing (101) through the gas outlet (121).