The present invention relates generally to {TAIL ~ valves} and, more particularly, to a bi directional flow control valve which provides {HEAD ~ improved flow control characteristics} 
The present invention relates generally to { TAIL ~ valves } and , more particularly , to a bi directional flow control valve which provides { HEAD ~ improved flow control characteristics }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD