... SSExecutive StandardRefer to CJ274-2008 «Town gas pressure regulators»Character1 Modular construction design, Big flow ability2 ... Patent NO:ZL200720078869.3ApplicationGas pipeline network for high pressure, city gate station, District regulator station, industrial ... together. Our main products include pressure regulator, steel flange, Stop Valve, ball valve, Filter, insulating joint, regulator station ...