This is the mini version of our non return valve ratbarrier as you can see it is slightly smaller than the standard version and is designed for pipes that are restricted due to tight bending outlets.

This is our new updated version of the Ratbarrier Non Return Valve Rat-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). 

Keep your drains clear and free from unwanted guests with the Rat Drain Flap 4" 110mm Valve. This brand new valve is designed to prevent rodents from entering your drainage system. 

The 4" size makes it suitable for a wide range of dsewer pipes, providing a versatile solution for both residential and commercial properties.

Constructed from durable materials, this valve is built to last and withstand the rigors of regular use. Its innovative design allows for easy installation and maintenance, ensuring hassle-free operation. 

Say goodbye to costly pest control measures and foul smells with this reliable and effective drain flap valve. Don't let rats ruin your plumbing system - invest in the Rat Drain Flap 4" Valve today and enjoy peace of mind knowing that your drains are protected.

We are pleased to announce the availability of our new fitting kits for installing our valves at depth.

Fitting kit for our valves now available you will need to order a optional fitting kit and pole with this to fit the RB2 RB4MINI and RB6 and Mini Valve but not the micro valve.

For example if you purchase 1x RB4 valve and wish to install using our 1m pole you would require 1x RB4 1x 1m Pole and 1x fitting kit

Another example would be you would like to install 4x RB4 and you require 1x pole the purchase 4x RB4 4x fitting kit and 1x 1m pole

To save on postage costs and passing this on to customers our poles are cut in half and supplied with a connector nut.

Please not we cannot guarantee that our poles or fitting kits will fit other manufacturers valves and this pole is designed to fit the Sewerstore, ratbarrier and advanced metal works valves.

Our Rat 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.