The Nitrous Express run dry technology refill pump station allows you to fill your own nitrous bottles. They include the control valve and nitrous transfer lines. The refill pump stations feature the run dry technology for easy transfer. These are designed for performance retailers in the business of refilling nitrous bottles, or racers who use a substantial amount of nitrous oxide. They're safe, easy, and quick. The stations come complete with the plumbing, hoses, gauges, valves, fittings, and bottle stand necessary to refill any nitrous bottle. These refill stations will require a compressed air supply of 80-100 pascals per square inch, a mother bottle through a local gas supplier, a scale, and a water separator/filter to help pump service life.