Needle valves are also used in situations where the flow must be gradually brought to a halt, and at {HEAD ~ other points} where {TAIL ~ precise adjustments} of flow are necessary or where a small flow rate is desired for medical use 
Needle valves are also used in situations where the flow must be gradually brought to a halt , and at { HEAD ~ other points } where { TAIL ~ precise adjustments } of flow are necessary or where a small flow rate is desired for medical use
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH