The Marina one way valve, also known as a check valve is designed to fit 6mm airline.

Protecting your pump from damage by back-siphoning, which can happen if you lose power to the air pump during a power cut or if it is switched off. This is the most common cause of faulty air pumps.

These non-return valves are low resistance, which will not affect the air flow to your aquarium, and they are very easy to install anywhere along the airline. Just cut the airline and push the airline over the 2 smaller ends of this valve. This will protect and prolong the life of your airpump.

Delivery Information

Fast Free UK Delivery on orders over £60.00.*
Smaller orders under £60.00 are subject to a £4.95 delivery charge. Delivery will typically be made within 2 - 3 working days but may be extended during peak times.

We Can Offer Next Day Delivery for £7.95*
To meet our deadline for this service you must order before 11.00am to ensure delivery for the next working day. This excludes weekends and bank holidays.

*Extra charges or restrictions will apply to certain UK postcodes. These include parts of Scotland, The Highlands, Northern Ireland and offshore Isles. Please note Next Day delivery is not available to these locations. Please click here for a full list of postcode exclusions and contact us today for a personalised quote. 

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