{HEAD ~ a condition indicator} operatively connected to said ionization switch and {TAIL ~ said power supply} for indicating the operation of said valve assembly 
operatively connected to
{ HEAD ~ a condition indicator } operatively connected to said ionization switch and { TAIL ~ said power supply } for indicating the operation of said valve assembly
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH