Talk:Check valve

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Double[edit]

I frequently install double check valves on existing lawn sprinkler systems that use other types of obsolete backflow devices or none at all. The statement that most homes or buildings have check valves is incorrect. H2O 18:09, 30 Jun 2004 (UTC)

Duckbill valve[edit]

The Duckbill valve is also a check valve —The preceding unsigned comment was added by 62.79.30.244 (talk) 12:55, 1 February 2007 (UTC).

External links modified[edit]

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External links modified[edit]

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check vent[edit]

Should that redirect here or to Drain-waste-vent_system#Internal_venting or get its own page? 64.231.169.63 (talk) 18:19, 20 November 2017 (UTC)