As a big-flow gas distributing system,gas regulator is particularly designed for the pressure regulating system of the cylinder centralized gas supply device applicable to all kinds of gases.It is high-precision pressure regulating device under the condition that the input pressure is no more than 15Mpa and the output pressure is between 0.01 and 1.6Mpa.When both the output pressure and the output flow change,it can stabilize the output pressure and work continuously for a long time.It use brass strainer inside,which can effectively filter gas impurities.The strainer is easy to be replaced.