A three way valve operates to direct the flow of {HEAD ~ the concentrates} into or bypassing a container located at a filling station in which {TAIL ~ the chemical composition} is formed 
A three way valve operates to direct the flow of { HEAD ~ the concentrates } into or bypassing a container located at a filling station in which { TAIL ~ the chemical composition } is formed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH