The flow continues through one or more conduits from the propulsion device to {TAIL ~ a filter element} housed in a filter housing where {HEAD ~ the particulates} are separated from the flow of air 
The flow continues through one or more conduits from the propulsion device to { TAIL ~ a filter element } housed in a filter housing where { HEAD ~ the particulates } are separated from the flow of air
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH