The Rat-Proof Flap OUT is installed by replacing the original flap inside your existing non-return valve.
It’s installed inside a non-return valve on the property’. If you don’t already have a non-return valve, your plumber can choose the best location to install one, then fit the Rat-Proof Flap OUT inside it by replacing the original flap, ensuring maximum protection for your layout.
A non-return valve is installed to help protect against backflow, and a Rat Proof valve (a non-return valve fitted with the Rat-Proof Flap OUT ) is installed to help block rat intrusion. Many properties use both for maximum protection, and your plumber can confirm the best setup and placement based on your drain line.
It’s strongly recommended to install our Rat-Proof Flap OUT in your existing non-return valve before rats make their way to your property. This qualifies as a true preventive measure.
Whatever your decision is, if you do not do it today, you may do it tomorrow, but then with a big rat infestation. Either today or tomorrow, you will end up installing the Rat-Proof Flap OUT
No, but you must act immediately. Start by locating the rats’ entry point using a smoke test combined with a camera inspection. Once the opening is confirmed, seal it with our Rat-Proof Flap OUT . After that, all that remains is to capture the unwanted rodents and you will finally be in peace.
You can order directly online or contact your plumber.
All online orders are sent exclusively via Canada Post or U.P.S, whether local, domestic or international, regardless of the country of destination of your order, the Rat-Proof Flap OUT PRODUCTS are delivered internationally by Canada Post or U.P.S.
You need to install a non-return valve, then fit it with the Rat-Proof Flap OUT . If you live in Canada, Mexico or the U.S.A. it is easy to get a non-return valve at your preferred hardware store, then simply replace the original flap with the Rat-Proof Flap OUT . You will avoid transport costs by only ordering the Rat-Proof Flap OUT .
The popular non-return valve models that we recommend for installing a Rat Proof Valve or only replacing the flap only are: IPEX – CANPLAS – OATEY – PRO FLO.
The Rat-Proof Flap OUT is not a non-return valve, but in case of backflow, it will close under water pressure coming in the opposite direction, in the same way as a non-return valve. But a chewed-up non-return valve protects you from NOTHING… not even its primary function, backflow protection.
We carried out high pressure tests to assess the function and behavior of the Rat-Proof Flap OUT during backflow. This Rat Proof protection performs very well its second function of protection against backflow, but legally, it cannot be qualified as a non-return valve.
We will soon publish a list of plumbing companies that offer professional installation and sale of the Rat-Proof Flap OUT . If you do not find what you are looking for in the list, do not hesitate to contact us directly: 1-800-672-0493
If you have already ordered your Rat-Proof Flap OUT and need a complete installation, simply contact your preferred plumber and ask them to install it for you.
NOTICE: if your company operates in the plumbing or related installation field and you wish to be part of our recommended installers list to offer sale and professional installation of the Rat-Proof Flap OUT , Contact-us.
In each province, plumbing codes require backwater valves to be certified and installed according to recognized standards. Any added anti‑rat device must therefore be used in combination with a compliant backwater valve, without compromising its certification or its proper operation.
Any dispute relating to this website or to any products associated therewith, or arising therefrom, of whatever nature, as well as any statement or declaration relating thereto, shall fall under the exclusive jurisdiction of the judicial district of Laval, Quebec, Canada.

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