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"Flood Guard" for floor drains

These handy devices function like a check-valve to help prevent flooding

Help protect your basement from costly flooding with a simple but effective Flood-Guard from PlumbingSupply.com®! Water damage can be very expensive to repair, so avoiding it is a must. These easy to install problem solvers can make all the difference between a good night's sleep and a nightmare. Looking for other flood protection devices? Click here.

Flood-Guard mounts quickly and easily into floor drains
An effective way to help prevent flooding caused by backed-up sewers.
-- case quantities are available at discounted prices --

Flood Guard - Help Prevent Basement Flooding
float model flood guard
2" Float Model
float model flood guard
4" Float Model
stand pipe model flood guard
4" Stand Pipe Model
(3" model is not threaded)

Flood-Guards use check valve technology to seal off sewer water backing up in your floor drains because of overloaded sewer conditions. Water will flow down through the drain opening until the sewer begins to back up. The Flood-Guard ("Float Model") float is pushed up by the rising water to seal off the drain opening. Once the sewer water begins to recede water can again flow down through the drain.

A screwdriver and a few minutes are all you need to fully install a Flood-Guard. Once in place, it can help prevent costly property damage and a very messy, stinky clean-up job.

The 4" Stand Pipe Flood-Guard is threaded to receive 1-1/2" IPS pipe. On the 3" model, the pipe is slipped through the rubber gasket before the screws are fully tightened. Gaskets are made of molded rubber, and all metal parts are plated or stainless steel.

View simple Flood Guard installation instructions and more information!

Available for 2, 3, and 4 inch floor drains
Description Price & Quantity
Flood Guard Float Model for 2" Drain - order 4 (case qty) or more of the same item for greater savings!
- Click here for dimensions
$17.37
Flood Guard Float Model for 3" Drain - order 6 (case qty) or more of the same item for greater savings!
- Click here for dimensions
$13.97
Flood Guard Float Model for 4" Drain - order 6 (case qty) or more of the same item for greater savings!
- Click here for dimensions
$15.20
Flood Guard Stand Pipe Model for 3" Drain - order 6 (case qty) or more of the same item for greater savings!
- Click here for dimensions
$14.91
Flood Guard Stand Pipe Model for 4" Drain - order 6 (case qty) or more of the same item for greater savings!
- Click here for dimensions
$16.13
For extreme, extended pressure the stand pipe model is recommended.

Enter the case quantity amount and click to add the items to your shopping cart.
Your shopping cart will automatically reflect the discounted prices for the case quantities shown above.

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Note: Flood guards are sometimes referred to as Palmer Valves.



Frequently Asked Questions

Q. "My floor drain has an inside diameter of 2 3/4 inches. Will any of these Flood Guards work in my pipe?"
A. The manufacturer currently only makes FloodGuards for the sizes shown, so for your size of pipe, none of these would work. The 2" model would be too small and the 3" model would be too big.

Q. "Will these Flood-Guards completely prevent flooding?"
A. Due to the nature of floor drains the float style Flood-Guard can become blocked open by debris, allowing back-up water to enter; they must be checked periodically. There is a limit to how much flooding these can help to prevent, based on various circumstances such as; head pressure, nearby drains, outlets, sinks, and many other things that we aren't able to easily list. This device may will also mask other important plumbing issues that should be taken care of, so do be careful. Also, be sure to inspect the Flood-Guard regularly as all mechanical devices will eventually fail; proper maintenance and inspections can help mitigate any failure.

Q. "Can I use the 2" Flood Guard in the shower that's located in my basement?"
A. These Flood Guards are designed for 2" pipe and are not designed to be used directly in shower drains. If you have a small 36" square or rectangular shower, the water may not drain quick enough through the 2" Flood Guard and could cause water to back up in your shower. This may not present a problem if you are consciously paying attention to the amount of water filling your shower area. In other words, you are able to turn the water off and let the shower pan drain intermittently during your shower time. Please note that shower bases normally have an inside depth of anywhere from 2" - 5" and need to be able to drain quickly to prevent water from overflowing the threshold.

Q. "The 2" Flood Guard does not look like it has the same type of float ball as the 4" float model?"
A. This is correct. The 2" model still works the same but the float is constructed more like a cup to allow a more even closure since it is a much smaller mechanism than the 4" model.



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