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Check Valves with True Unions limit the flow of water
to one direction. This prevents water from flowing backwards or backing
up into your pump or filter. Check valves should be used only in areas
under pressure where water is flowing upwards. All of our Check Valves
come with true unions on them. We feel it is very important to have
true unions on your check valve just incase something gets stuck in it.
These unions will allow you to remove the check valve without cutting
into your plumbing.
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