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by Kevin
on 11/12/2011
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Very nice check valve and really easy to install. I had another where the nuts were just too small for the tubing.
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by CalvinT
on 12/29/2008
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ordered this product 1 month ago for my Calcium reactor and its been working good so far. I used 2 M3 metallic brass valves before. 1 become defective, the other one lock up on me. Finally I'm fed up with that and decided to use this instead. Working great so far.
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