In {HEAD ~ this manner}, the valve provides consistent flow control characteristics in {TAIL ~ each flow direction} 
In { HEAD ~ this manner } , the valve provides consistent flow control characteristics in { TAIL ~ each flow direction }
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL