Talk:Check valve
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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).
External links modified
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External links modified
Hello fellow Wikipedians,
I have just modified 2 external links on Check valve. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
- Added archive https://web.archive.org/web/20090427215539/http://northvalekorting.co.uk/prod-norval-perf.asp to http://www.northvalekorting.co.uk/prod-norval-perf.asp
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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)