Dear Homeowner,

Congratulations!  Your property is now protected from sewage backups by the Clean Check extendable backwater valve.

Under normal installation and use, a three month inspection interval is recommended.  After an appropriate number of inspections, you can determine a more accurate time period depending upon usage.

Inspection can be quick and easy.  First, remove the threaded plug or cover and perform the following procedure.

  • Loosen but do not remove the stainless steel thumbscrew located inside the upper collar.
  • Note the approximate locations of the thumbscrew and opposing notch at this time for the correct repositioning of the insert pipe during reinstallation.
  • Using the finger hole provided above the thumbscrew, extract the insert pipe and attached flapper assembly.
  • Clean the debris from the flapper and/or valve body.
  • Inspect the flapper for any deterioration or damage caused by the harsh environment in which the flapper must operate. If deterioration is observed, replace the flapper. Flappers are available from your plumbing contractor or wholesale plumbing supply firm. (If none are readily available, contact the factory toll free (800-231-3345) for a local source.)
  • The Clean Check Extendable backwater valve is designed for easy reinstallation.  To properly reseat the valve, slowly lower the inner assembly and rotate until the thumbscrew (loosened so that it does not touch the side of the riser pipe) faces its original installed position in the larger riser pipe.  If necessary, rotate the inner riser so the thumbscrew is located as it was previously.  During rotation, the unit can be felt to drop into place when it seats correctly.
  • Hand tighten the thumbscrew until it reseats against the wall of the larger riser pipe. Be certain the thumbscrew is NOT resting on the top of the larger riser pipe. The flat side of the flapper should now be resting, in the closed position, on the house side of the valve body.
  • Replace the threaded plug or cover.

NOTE: Harmful bacteria are present in sewer lines.  We recommend that you contact your local health district for proper sanitary precautions.