Check the listing for details. for Purging Nitrous Oxide System 16030 NOS 4AN Line Nitrous Purge Valve Kit. Color: Black, Condition: New. Listed at 119.01 USD. Fitment:16030NOS-4AN line purge valve kit is suitable for "purging" nitrous oxide at the solenoid and helps to release trapped air or gaseous nitrite from the feed line Features: 1) This purge valve kit help release the trapped air or gaseous nitrous from the feed lines. The valve eliminates the lag time caused from vacuum accumulation in the feed line to ensure a consistent performance 2) Designed to "Purge" line at solenoid,Includes all required components.Before you begin make sure that your bottle valve is closed. and your main feed line is empty 3) Made of high quality material with black finish.Durable,Sturdy and wear-resistant 4) 16030NOS -4AN Pipe purge valve kit 11 pieces, including solenoid valve, 4N adapter fitting, push button activation, NPT fitting, NPT to compression fitting, stainless steel tubing and instructions Package included:Purge solenoid, 4 AN adapter fitting, Push-button activation, NPT fitting, NPT to compression fitting, 3/16'' dia. Stainless Tubing 7'' long and Accessories