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