Execution standards

Flange: GB4216-89

Pressure test: GB13927-1992

Product Introduction

GYFA49H explosion-proof wave valve is used in civil air defense systems as a safety valve to eliminate external water hammer shock waves. Multiple sets of safety valves are installed internally. This product is installed at the head of the water supply pipeline, combining wave attenuation and blocking to prevent water hammer shock waves from entering the interior of the water supply system along the pipeline, providing safety protection for the system equipment.

characteristic

1. The valve adopts multiple sets of safety devices (shock-absorbing safety valves) inside, which are instantly opened for "shock-absorbing" when an impact arrives, and the main valve disc retreats to close the pipeline, completing the "wave blocking" work;

2. Utilize the energy of the water hammer shock wave itself to work independently;

3. By adjusting the springs of the main valve and damping valve, the pressure requirements of different working conditions can be met;

Working principle

Under normal circumstances, the valve is in a normally open state and the system medium flows normally. When an abnormal situation occurs and an external shock wave enters the valve, the main valve disc is impacted and quickly closes against the spring force, blocking the shock wavevalveFront end, complete the 'wave blocking'; The shock wave that has entered the main valve is introduced into the "wave dissipating" chamber under the action of the safety valve, which resolves the destructive force of the shock wave.