{HEAD ~ The secondary float} has {TAIL ~ an axial} through hole and is movably sleeved on the refill pipe  
has
{ HEAD ~ The secondary float } has { TAIL ~ an axial } through hole and is movably sleeved on the refill pipe
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH