Norgren r72g excelon modular pressure regulator g1 4 port norgren r72g 2gk rmn this compressed air pressure regulator from the b excelon b range has been designed to allow in line or modular installation with the minimum of fuss the regulator features a push to lock adjustment knob a balance valve design gives optimum pressure control norgren excelon r72g 2gk rmn pressure regulator g1 4 port