The tank filling pipe can also be sealed airtight by the closure flap or by {TAIL ~ a closure valve} arranged in {HEAD ~ the tank filling pipe} 
The tank filling pipe can also be sealed airtight by the closure flap or by { TAIL ~ a closure valve } arranged in { HEAD ~ the tank filling pipe }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD