tel phone icon 20 lbNeed help?   908-236-0277  CLICK TO CALL
DrainNet | Global shipping for thousands of in-stock productsThousands of products in stock and ready to ship! Learn More

Cart Orange

Drain Backflow Preventer 3"
Product Code: FG-3F

$26.70 each

Drain Backflow PreventerThere is nothing worse than a drain backflow.  Cleaning and repairing the damage caused by sewer water can be very costly.  That's why we offer this inexpensive device to help prevent drain backflow.  It is essentially a check valve for your floor drain.  The water will excert pressure on a rubber float.  When pushed enough, the rubber float will seal your drain, protecting your home or business from flooding.  This model is offered in 2", 3", and 3" drain sizes.

Installing flood guard

How to install: 

  • Slightly pre-tighten the screws to expand the outer gasket.  If pipe has slightly larger diameter, this will help the unit from falling too far down the drain
  • You can also use a string, wire, or hook to lower the Backflow Preventer into place.
  • Lower the Backflow Preventer into the pipe, making sure that it's low enough with the float pushed up for the strainer/cover to fit back over the drain, flush, with the floor.
  • Once the unit is down deep enough, tighten the screws at the top to create a snug seal within the pipe.  
  • Put a few drops or dabs worth of oil or grease on the float rod and the hole at the top of the unit.
  • Replace the strainer or cover on the drain 

Drain Guard 3

Places to use this product:  Great for commercial and residential applications.  Basements, laundry rooms, kitchens, and bathrooms.

How to prevent basement flooding from floor drain


Your Cart

The cart is empty


 service channel 
 We are members of Corrigo and Service Channel
Secure website with Comodo SSL   We ship UPS  Drain-Net offers green solutions to your plumbing problems.
Don't let your profits go down the drain!
PayPal Verified Merchant  American Express AMEX accepted  MasterCard accepted  Visa accepted