Piping English ( 배관 영어 )
캐나다 미국에서 쓰이는 배관 영어 ( plumbing, piping, English )
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piping term ( 배관 용어 )
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Golf
Sunday, August 1, 2010
are similar to, in that
Vacuum relief valves are similar to check valves in that they are one-way valves which close under system pressure to prevent water escaping, but open to allow air into the system when the pressure is removed.
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