For example, {HEAD ~ any other kind} of register may be used in {TAIL ~ lieu} of the butterfly valve registers, for instance the slide valve type 
used in
For example , { HEAD ~ any other kind } of register may be used in { TAIL ~ lieu } of the butterfly valve registers , for instance the slide valve type
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH