Check the listing for details. For Purging Nitrous Oxide System NOS 16030 4AN Line Nitrous Purge Valve Kit. Color: Black, Condition: New. Listed at 119.29 USD. For Purging Nitrous Oxide System NOS 16030 4AN Line Nitrous Purge Valve KitFunction: 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.Direct Replacement: Manufacturer part number 16030, directly replace for your broken 4AN Line Purge Valves. All required components included for quick & easy installation. Hose Size: 4AN. Fuel Solenoid: Super PowerShotNote: 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 emptyHigh quality: Made of high quality copper, steel and rubber. Durable,Sturdy and wear-resistant.Package Includes:Purge solenoid, 4 AN adapter fitting, Push-button activation, NPT fitting, NPT to compression fitting, 3/16'' dia. Stainless Tubing 7'' long and Accessories. (10pcs)