Buffalo Non Return Valve Stainless Steel 4 inch (110mm) Prevents RatsPart No: BNRV4

• Buffalo Rat Blocker 4” / 110mm non return valve fits clay and plastic pipes
• New and improved version now features a full stainless steel face as well as flap
• Stainless steel flap stops rats from entering properties via the sewage system.
• Prevents foul water flowing back from the drainage system
• Simple to install.
• Easy push fit into the drain pipe, no additional equipment required.