Ensure your plumbing safety with Ashirvad Non Return check Valve Backflow Preventer, the ultimate safeguard against water contamination and backflow risks in underground drainage systems. Available in 4 inch and 6 inch sizes, these non return check valves are crucial for maintaining the directional flow of water, protecting your water supply from pollutants, chemicals, and sewage. Ideal for any home or commercial property, these valves prevent flood damage and keep your environment hygienic and safe. Shop now to secure your plumbing system with Ashirvad’s reliable backflow preventers.