Ista Spring Check / Non Return Valve

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The Ista stainless spring check valve is an effective none return valve which can be used with CO2 systems and aquarium air pumps alike. This valve has easy tighten screws to firml y secure the airline in place to prevent it coming off under pressure.This check valve is suitable for use with 4mm internal / 6mm external airline, the most commonly used for CO2 systems and air pumps in aquariums.Ista specialise in planted aquarium equipment and supplies, so you can be sure that this check valve is one of the most advanced on the market and made to the highest possible quality. Show more