NOS purge kit is designed to purge nitrous vapors at the solenoid(s) for
instant and consistent nitrous injection. When you hit the button,
response can be delayed due to this time it takes for liquid nitrous to
reach the solenoid. The purge valve solenoid bleeds accumulated nitrous
vapors from the supply lines. Kit includes: Power Shot solenoid,
pushbutton, filter and wiring for use with -4AN hose.