SENTINEL FLOOR DRAIN SEWER BACKFLOW PREVENTION DEVICE
STANDARD INSTALLATION INSTRUCTIONS
**Please note that a power drill may be needed for installation to create the tightest seal
For 3” (75 mm) Drain:
- Remove old drain cover from floor drain
- Wipe clean the throat of the drain pipe
- Remove the 3” Device from the 4” Adapter and discard the Adapter
- Insert Device fully into drain pipe opening until the Device drain cover is resting on the floor
- Secure the Device by fully tightening TWO screws which will splay the expandable rubber side seals against the adjacent drain pipe wall while simultaneously anchoring the Device into place
For 4” (100 mm) Drain:
- Seat 3″ Device fully into 4″ Adapter aligning the four screws on the Adapter with the corresponding holes in the Device drain cover
- To unitize the Device together, tighten the TWO screws in the 3″ Device fully. This will splay the expandable rubber side seals of the 3″ Device against the adjacent wall of the Adapter anchoring the two pieces together. They should not be able to be pulled apart. If you can, you have not tightened the screws enough (for some a power drill may be useful).
- Remove old drain cover from floor drain
- Wipe clean the throat of the drain pipe
- Insert Device/Adapter Assembly fully into the drain pipe opening until the Device/Adapter Assembly drain cover is resting on the floor
- Through the holes in the Device/Adapter Assembly drain cover, secure the Assembly by fully tightening the Adapter’s aligned four screws which will splay the Assembly’s expandable rubber side seals against the adjacent drain pipe wall while simultaneously anchoring the Assembly into place
If you are still having issues please contact our customer service department at orders@sentineldrainguard.com. We will be happy to assist you.
NOTE: Where drain pipes might not be concentric or some other interference is encountered, a cylinder hone may be rented from a local rental agency to remedy the situation
THE SENTINEL SEWER BACKFLOW PREVENTION DEVICE WILL GUARD AGAINST SEWER BACKFLOW THROUGH A FLOOR-LEVEL DRAIN. MORE EXTENSIVE SEWER BACKFLOW PREVENTION MAY BE NECESSARY WHERE SITUATIONS REQUIRE.