While {HEAD ~ any pressure} may be used to actuate {TAIL ~ the valves}, we have found that regulating the air pressure at the service station 14 to about 75 to 90 psig is preferred to establish precise control of the dispenser apparatus 
used to actuate
While { HEAD ~ any pressure } may be used to actuate { TAIL ~ the valves } , we have found that regulating the air pressure at the service station 14 to about 75 to 90 psig is preferred to establish precise control of the dispenser apparatus
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH