This is the smaller version of the 4-inch model it is used in sewers that have been repaired using a drain liner or insert or using a smaller pipe it is ideal for 90mm – 98mm pipes. It is compact and provides the same protection as all our other rat drain flaps.

This is our new updated version of the Ratbarrier Non Return Valve Rat Sewer Flap, these are built in house by us using 316 Grade Stainless Steel. The valve does not come with the nut and bolt this is for deep chamber installation and can be purchased from us if required please see our other items. The valve is push fit in design and in a chamber which is not deep you can simply compress the valve body and insert it into the outlet and it will clamp to the inside of the chamber (No fitting kit is required).

Our Rat drain Blockers are built to order and are produced using our plasma cutting machines.

Common Questions Asked By Our Customers

Are these tried and tested? Yes we are a pest control company and install these valves ourselves, the valves are made by pest controllers for pest control.

Why are your less expensive than other products? Most other suppliers purchase from either china or from laser production companies. We have always prefered to build in house and supply direct to trade and consumers.

What Grade Steel Do You Use? We use 316 Grade stainless steel which has the best corrosion resistant properties compared to the common 304 grade used in other Valves.

What sizes do you offer? We offer 4″ and 6″ valves, this listing is for the 4″ version which fits 100mm – 110mm pipes. It will fit all pipe types including ceramic, clay and plastic.

What comes with the valves? All valves come with a retaining cable for easy removal and safety purposes, it is normally secured on the lid or the chamber wall.

Do you offer discounts for bulk orders? Yes we are happy to provide discounts for bulk orders please message us to discuss this.

If you have any questions please let us know.