This Korean Industrial Standard specifies butane gas pressure regulator (hereinafter, referred to as "regulator") for movable gas heater with not more than 1kgf/h. in treatment ability and gas of 19.6 to 588kPa {0.2 to 6.0kgf/m2} whose regulation pressure limit is 2.26 to 3.24kPa {230 to 330mmH2O}.