Gas pressure regulating equipment is used to adjust the pressure of gas supply in the gas transmission and distribution system. Its basic task is to adjust the higher inlet pressure of the front level to the pressure needed in the downstream. It is an important link connecting each process in the gas transmission and distribution pipe network. The equipment of the voltage regulating station consists of valves, safety cut-off valves, safety release valves, filters, compensators, voltage regulators, measuring instruments, bypass pipes, etc.