W.E. Anderson, a division of Dwyer Instruments,HNV needle valve is a bar stock style valve designed for controllinglow flowrates of liquids or gases. The valve series features finethreading and a large seat area to ensure precise flow control. Wettedmaterials are 316SS and PTFE, making the valve a good fit for corrosiveapplications. The Series HNV valves are tested to assure vibration andthermal stability. The valve body includes a lock pin to preventaccidental bonnet disengagement.  Available in male x male, male xfemale, female x female configurations ranging in sizes from 1/8˝ to 1˝NPT.