Follow the manufacturer’s instructions and the installer’s handover. Ottawa advises periodic maintenance and checking before heavy rain; Canada.ca recommends regular inspection, at least twice yearly in its guide. Arrange professional service if the model or condition is unclear.
Do not force or dismantle it. Follow only the specific manufacturer instructions for homeowner checks, and avoid contact with sewage. Have a qualified plumber inspect a stuck, damaged or contaminated valve.
Stop using toilets, sinks, showers, laundry and appliances that discharge through the blocked route. Do not open the cover during an active backup. Follow your installer’s directions and contact a plumber if it does not reopen or you see a backup.
No. It can help against reverse flow through protected plumbing, not groundwater, foundation seepage, window wells, surface runoff or sump-pump problems. Assess every water pathway.
No. A valve helps block sewer reverse flow through connected plumbing. A sump pump moves groundwater collected in a sump pit. They address different risks.
The City’s Residential Protective Plumbing Program page says rebates are not available for maintenance, repair or replacement of existing protective devices. Confirm current program terms directly with the City.