Pressure gauge for pipe network

The utility model discloses a pressure gauge for a pipe network, which comprises a support assembly, a protection assembly and a connecting assembly, and is characterized in that the support assembly comprises a pressure gauge, a scale plate assembled in the pressure gauge, a glass fixing piece assembled on one side of the pressure gauge and a pressure gauge connecting pipe assembled at the bottom of the pressure gauge; the valve is installed in the pressure gauge, when the pressure gauge is exposed in the external environment for a long time to work, the pressure gauge is likely to be damaged and needs to be replaced by workers, the valve is closed by rotating a valve rod installed on the front face of the valve, and therefore the pressure gauge is not damaged. And then the connection and fixation between the pressure gauge and the valve are removed, a new pressure gauge is installed after the pressure gauge is taken down, and replacement can be completed by opening the valve rod after installation, so that