Nikou Check Valve, 2Pcs Stainless Steel One Way Air Valve for Anti-Backflow Non-Return Air CO2 Line Tubing Regulator Diffuser in Aquarium System Fish Tank Accessories

• Keep Service Life: The Pneumatic Check Valve can prevent the aquarium from water flowing back, which is caused by the decrease, and keep the function of carbon dioxide bottle
• One Way Flow: When used in the Ozone generator, air check valve can prevent the Ozone from flowing back to the air pump and eroding the propeller
• Function Well: Aquarium non return check valve can protect the power head from the water flowing back which is caused by power cut
• Easy Operation: Single check valve is easy to install, requires no additional tools and can be attached to any place you like in seconds
• Application: Stainless Steel One Way Check Valves are suitable for CO2 supply system in fish tank, aquarium and air pump system

Product Description Features: * The pneumatic check valve can prevent the aquarium from flowing back water, which is caused by the decrease, and keep the function and service life of the carbon dioxide bottle. * When used in ozone generator, air check valve can prevent ozone from flowing back to the air pump and propeller erosion. * Aquarium check valve can protect the feeding head from the backflow water which is caused by power failure. * Simple check valve is easy to install, requires no additional tools and can be attached to any place you want in seconds. * These Stainless Steel One Way Check Valves are suitable for CO2 supply system in fish tank, aquarium and others. Specification: Material: stainless steel. Colour: as shown in the picture. Size: 37.1 x 7.9 mm/1.6 x 0.3 inches. Package includes: 1pc x Stainless Steel Check Valve Warm Tips: This can only be used by cylinder pressure. Air pumps, generators, do-it-yourself cylinders are useless. Directions 1. Remove the check valve from its packaging. 2. Connect the valve to the CO2 bottle and aquarium system according to the size of your hoses (4mm or 6mm). 3. Make sure the valve is installed correctly and the aquarium water does not flow back. 4. Check regularly if the valve is working properly and clean it if necessary.