Water testing device for water spraying fire extinguishing system

The utility model relates to the field of fire extinguishing equipment, and discloses a water testing device for a water spraying fire extinguishing system, which comprises a metal pipeline, one end of the metal pipeline is fixedly connected with a water testing connecting pipe, the outer wall of the water testing connecting pipe is provided with a control valve, and one end of the metal pipeline is movably connected with a water testing joint. A rotating element is arranged on the outer wall of the water testing connector, the rotating element comprises a reinforcing sleeve and an anti-skid handle rod, a threaded connecting opening is fixedly connected to the top end of the water testing connector, a sealing element is arranged on the outer wall of the threaded connecting opening, and the sealing element comprises a sealing ring, a convex block and a mounting ring. The sealing element is arranged to seal the connecting position of the metal pipeline and the water testing connector, water leakage is prevented