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ZRDR | Wyin Stainless Steel Check Valve | Non Return Valve


NRV Non-Return Valve – NRV is an excellent check valve, the NRV Valve is a kind of fitting that permits fluid to flow through it in only one direction.  A strong stainless steel grade is used for general corrosive services with good corrosion resistance and strength, thus making it a good choice.

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Stainless Steel Check Valve

Introducing our ZRDR Stainless Steel Check Valve for Aquarium CO2 Equipment and Air Pumps, the ideal solution for maintaining efficient and safe operation in your aquarium. These check valves are specifically designed for use with CO2 equipment and air pumps, ensuring reliable performance and preventing unwanted backflow.

Crafted from high-quality stainless steel, these check valves are built to withstand the rigors of aquarium environments. Stainless steel offers excellent durability, corrosion resistance, and longevity, ensuring that the valves will continue to function optimally over time.

The primary function of these check valves is to prevent the backflow of water, CO2, or air from your aquarium system. By incorporating our stainless steel check valves into your setup, you can be confident that any reverse flow or potential damage caused by backflow is effectively mitigated. This not only protects your equipment but also maintains a stable and consistent supply of CO2 or air for the health of your aquatic inhabitants.

Featuring a compact and streamlined design, these check valves are easy to install and integrate into your existing CO2 or air pump system. Simply connect the valves between the tubing of your equipment and the aquarium, and they will effectively regulate the flow in one direction while preventing any undesired backflow.

Maintenance is minimal, thanks to the durable stainless steel construction. The valves are resistant to rust and corrosion, reducing the need for frequent replacements or repairs. However, occasional visual inspection and cleaning are recommended to ensure optimal performance.

Ensure the efficiency and safety of your aquarium CO2 equipment or air pump system with our Stainless Steel Check Valves. Designed for durability, reliability, and functionality, these valves provide essential protection against backflow, guaranteeing a consistent supply of CO2 or air to your aquarium. Invest in the quality and peace of mind that comes with our stainless steel check valves and create a thriving aquatic environment for your beloved fish and plants.

How to Install

  • Before use, clean and dry both sides of the tubing so as to hook up valve tightly.
  • Check the flow direction of the valve to make sure put on the correct sides.
  • Attach air pump check valve to the tubing carefully and connect completely.

Tips: If the valve restricts air flow in both directions, please poke something into the hole on the inlet side to push open the valve. After that the valve would allow airflow in the right direction.

Good at Prevention

The air check valve protects you air pump by preventing aquarium water from back siphoning during a power outage.

Practical Application

Fits for standard 1/4 inch & 3/16 inch airline hoses. Can be used for Hydroponics. Aquaponics, aquariums, fish tanks and gardening etc.

Safe and Durable

Clear rigid plastic materials allow you to get rid of breaking the inlet off easily or leaking air. Work for a long time without making noise.


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