Importance

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Abstract

A check valve access chamber is provided that is capable of forming a sealed enclosure against or around a self-contained check valve assembly so as to maintain a continuous barrier against moisture, waste water, and sewage gases during normal operation or under backflow situations. The access chamber may also include an angled floor and/or angled pipe flanges to add or maintain a grade across the sewer pipe or the self-contained check valve assembly to ensure adequate flow to meet or exceed building code standards. Access chambers of this type permit a labour-saving method of installing a check valve comprising the steps of connecting an access chamber having an access sleeve to a self-contained check valve assembly; connecting the self-contained check valve assembly to an inlet pipe and an outlet pipe; backfilling around the access chamber to a desired grade; and trimming the access sleeve to a desired height relative to the desired grade.

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First Claim