JOHN GUEST 1/4" One Way Check Valve RO Reverse Osmosis Water Filter NSF Certifie
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<b>[Product Information]</b><br>
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<li>the Super Speedfit acetal Single Check Valve ensures protection against reversal of flow</li>
<li>They are designed for conenction to either plastic or soft metal tube and they are intended for liquids only. Note that they are not suitable for air and vacuum applications</li>
<li>The inner valve is spring loaded and the fitting produces low headloss</li>
<li>It is also recommended that the non-return valve is regularly checked and maintained. Pipe connection has never been easier than with John Guest fittings</li>
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