| The Tetra non-return-valve protects sensitive units like air pumps for water coming from the aquarium. If your air pump is located under the water level, water from the aquarium can be rinse out by a defect of the air pump or power failure. So the whole aaurium can be rinse out. The Tetra non-return-valve is simply integrated in the air hose and suitable for all air hoses with 4/6 mm diameter. |
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Tetra Non-return valve