The Tetra Tec Non-return-valve CV4 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.
Actual product may vary from the image shown.
Actual product may vary from the image shown.
Overview
The Tetra Tec Non-return-valve CV4 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 Tec non-return-valve CV4 is simply integrated in the air hose and suitable for all air hoses with 4/6 mm diameter.
Write a new review for Tetra Tec CV4 Non-return valve
Reviews for Tetra Tec CV4 Non-return valve: Write a review
Sergei at 04.07.2025: This is a high quality check valve, I recommend only this one for installation.
Roman K. at 24.02.2017: Check valve Tetratec CV4 - is a special device allows the air compressor to be below the water level so that water in the reverse current could not get to the compressor and also in case of a power outage.The device is of excellent quality and essential for any aquarist.
Hrvoje V. at 15.02.2016: Great product. It's a must have and price is one of the best online. Buy it
