Welcome to our listing for our Standard size 110mm non return valve. Please note the nut and bolt in the picture is not supplied please visit our other items for the optional deep chamber installation kit and fitting pole (Not required if you can reach the outlet as it is push fit) Installation is simple as it is push fit just compress the valve body and insert into the sewer outlet. 

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

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. The valves are not supplied with a nut and bolt these are used to install into deep chambers only and using the optional installation pole. If your require a pole or nut and bolt please look at our other items.

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.