Talk:Check valve

Double
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
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).

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External links modified
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check vent
Should that redirect here or to Drain-waste-vent_system or get its own page? 64.231.169.63 (talk) 18:19, 20 November 2017 (UTC)