NOS The NOS refill station is designed for performance retailers in the business of refilling nitrous bottles or racers who use a substantial amount of nitrous oxide. It is safe, easy, and quick; taking only a minute or two to accomplish. Gone are the days of freezing the receiving bottle overnight in order to get a full bottle the next day. With the included regulator and water separator and legal for trade scale, all you need is a compressed air supply and a mother bottle to start making money refilling bottles. The 14254NOS refill station comes complete with all the plumbing, hoses, gauge, valve, fittings, regulator and separator, scale and bottle stand necessary to transfer nitrous from a mother bottle to the receiving bottle instantly. The pump runs off your shops compressed air and requires no electrical hook–up.