DOUBLE ANTI-BACKFLOW VALVE CAPABLE OF MINIMIZING THE MAINTENANCE COST

摘要

PURPOSE: A double anti-backflow valve is provided to prevent the generation of noise and vibration in a piping by absorbing the impact generated in a second valve through a first valve.;CONSTITUTION: A double anti-backflow valve(1) comprises a first frame(10), a second frame(30), a first valve(20), a base cap(50), a second valve(40) and a spring(60). The first frame comprises a guide groove. The rearward of the second frame is inserted in the front of the first frame. A guide rod is formed in one side of the first valve. The guide rod is inserted into the guide groove of the first frame. The first valve opens and closes the gap of the first frame and second frame. The both ends of the base cap are opened. The base cap is fixed to the front of the second frame. The guide rod is formed in one side of the second valve. The guide rod is inserted into the guide groove of the second frame. The second valve opens and closes the gap of the second frame and base cap.;COPYRIGHT KIPO 2012