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Simple, straightforward and low shipping rates for these flood guards for floor drains.



"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
Float Model
stand pipe model flood guard
4" Stand Pipe Model
(3" model is not threaded)

Flood-Guard operates like a check valve to seal off water back-up by overloaded sewers. Water flows normally through the drain until the sewer begins to back up. Then the Flood-Guard ("Float Model") float rises to seal off the drain opening until the water recedes.

A screwdriver and a couple of minutes are all you need to install a Flood-Guard. Once in place, it helps prevent property damage and a very messy 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.
Flood Guard Installation Instructions

Flood Guards in-use illustrations:




float model flood guard

Float Model
stand pipe model flood guard

Stand Pipe Model
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.



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