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Floor Drain Backflow Preventer, Silicone One Way Drain Valve for Sink Pipe in Bathroom Kitchen Laundry Basement (Blue)

Free shipping on orders over CA $49.99

CA $19.52

CA $ 7 .99 CA $7.99

In Stock

About this item

  • It is suitable for standard 1 1/2”to 2" pipe.
  • It avoids odor get out of the pipe while also allowing the water to easily drain.
  • Installation is very simple, with no alteration to existing outlets.
  • Just order several to install in every floor drain, like basement, laundry, bathroom shower, kitchen sink etc.
  • If the silicone part is too long, you can trim the flat bottom to achieve quick drainage.



Product Description

drain backflow preventer
drain backflow preventer
drain backflow preventer
drain backflow preventer
drain backflow preventer

helil
Reviewed in Saudi Arabia on March 11, 2025
للفتحات الصغيرة
KaPe
Reviewed in Germany on March 10, 2025
War die einzige wirklich gute Lösung für einen Duschwannenabfluss, bei dem es gelegentlich Rückstau durch gleichzeites Leeren der badewanne gab.
Klee Rogers
Reviewed in Canada on March 27, 2024
Package states fit for a 2" drain, fell right in the pipe, not accurate fit at all, very disappointed with this product, false advertising
Jakeytoo
Reviewed in the United States on October 19, 2024
The media could not be loaded.
Hb
Reviewed in the United States on April 14, 2024
Easy to install, been using for awhile and works gr8!
TorontoLady
Reviewed in Canada on June 27, 2023
It inserted into the drain easily enough but it just made the water back up into the shower pan. There’s better solutions.
DM
Reviewed in Canada on January 22, 2023
We're on septic and this keeps the smells from coming in the house
Enrike N.
Reviewed in Mexico on November 3, 2022
Se instala muy rápido
Sean Riddolls
Reviewed in Canada on July 22, 2021
While these do fit into a standard kitchen sink drain (if you discard the outer adaptor), they absolutely require a straight unobstructed drop of 4.5 inches minimum [11.5cm] to function correctly – Which is rare in kitchen drains.If your drain has any bends or angles within the first 4.5 inches, then the lower rubber flanges of the backflow preventer will sit folded closed against the inside of the pipe, and actually *cause* a blockage, preventing water from draining.I have attempted to illustrate the resulting internal fold in the photos, by overlaying the backflow preventer in front of the pipe in the same folded position.I would be less annoyed if Amazon had permitted me to return these products, but for whatever reason, there are no returns permitted on this product. : (
Philip Leak
Reviewed in Canada on January 24, 2021
sewer gasses still seeping up my drains
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