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The Ista Spring Stop Check Valve's stainless steel spring design assures reliable prevention of backflow and siphoning.
Each Check valve has minimal impact on air pump and CO2 injection applications.
Elegant in shape, it doesn't make for an eye sore around your aquarium.
The Spring Stop Check Valve is easy to disassemble for cleaning, and it's air tube fastening node assures that your airline will not burst from built up pressure.