FIELD: mechanical engineering; internal combustion engines and natural compressed gas pressure regulating systems. SUBSTANCE: pressure regulator has housing 1 with medium-pressure and low- pressure spaces 2 and 3, respectively with the following devices places in between: first regulating member 4 loaded by spring 5 arranged in bushing 6 and connected through lever 8 rotating on axle 7 and rod 9 with diaphragm 10 forming, together with housing 1 and its cover 11, first command and first working spaces 12 and 13, respectively. Second diaphragm 15 installed in outlet space 14 forms, with cover 16, second command space 17 and working space 18. Additional regulating member is made in form of truncated cone 20 mating through its smaller base with cylindrical channel 21 communicating with outlet space 14 and through larger base, with working channel 22 communicating with working space 13 and through jets 23, with outlet space 14 and second working space 18, and through jet 24 arranged coaxially with second regulating member in nozzle 25, with intermediate chamber 26. EFFECT: enhanced response, increased reliability in operation. 4 cl, 3 dwg
