DEWIN 2Pcs Check Valve, Stainless Steel CO2 One Way Check Valve for Aquarium Co2 System Diffuser, Prevent Aquarium from Water Flowing Back

✅【Operating System】: Non return check valve is suitable for CO2 supply system in fish tank, aquarium and others. Aquarium CO2 check valve can protect the power head from the water flowing back which is caused by power cut. ✅【Check Valve Function】: Water check valve can prevent the aquarium from water flowing back, which is caused by the decrease, and keep the function and service life of Carbon dioxide bottle. ✅【Take Effect】: When used in the Ozone generator, air check valve can prevent the Ozone from flowing back to the air pump and eroding the propeller. Warm Tips: This can only be used by the pressure of the steel cylinder. Air pumps, generators, DIY cylinders are useless. ✅【Easy to Use】: Single check valve is lightweight, portable and space saving - It is easy to install, requires no additional tools and can be attached to any place you like in seconds. ✅【Risk-free Products】: We serve you based on the principle of customer first. If you have any questions about the product, please contact us as soon as possible, and we will give you a satisfactory answer within 24 hours.

Item Weight: 12 Grams Manufacturer: Dewin ASIN: B07FF1G88R Item model number: CWOT-32100 Customer Reviews: 3.4 out of 5 stars Date First Available: July 11, 2018 Item Package Dimensions L x W x H: 3.46 x 2.8 x 0.47 inches Brand Name: DEWIN Color: Silver Material: Stainless Steel Number of Items: 1 Style: Modern Included Components: 2 x Stainless Steel Check Valve Specific Uses for Product: Aquarium CO2 systems, Ozone generators Is Discontinued By Manufacturer: No Package Dimensions: 3.46 x 2.8 x 0.47 inches; 0.42 ounces