--- product_id: 57718256 title: "AQUATEK Premium Brass Check Valve for Planted Aquariums" brand: "aquatek of california" price: "€ 0.78" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.hr/products/57718256-aquatek-premium-brass-check-valve-for-planted-aquariums store_origin: HR region: Croatia --- # Corrosion-resistant brass Prevents back-siphoning 25 psi minimum pressure AQUATEK Premium Brass Check Valve for Planted Aquariums **Brand:** aquatek of california **Price:** € 0.78 **Availability:** ❌ Out of Stock ## Summary > πŸ’‘ Elevate Your Aquarium Game! ## Quick Answers - **What is this?** AQUATEK Premium Brass Check Valve for Planted Aquariums by aquatek of california - **How much does it cost?** € 0.78 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/57718256-aquatek-premium-brass-check-valve-for-planted-aquariums) ## Best For - aquatek of california enthusiasts ## Why This Product - Trusted aquatek of california brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durable Design:** Crafted from premium brass for unmatched longevity in humid environments. - β€’ **Secure Connection:** Air tube tightening nut ensures a leak-free, continuous airflow. - β€’ **Aquarium Essential:** Tailored for pressurized CO2 systems in planted aquariums. - β€’ **Ultimate Protection:** Safeguards your CO2 system from water damage during outages. - β€’ **Flow Direction Clarity:** Arrow marking for easy installation and optimal performance. ## Overview The AQUATEK Premium Brass Check Valve is engineered specifically for planted aquariums, providing essential protection against back-siphoning and ensuring the integrity of your CO2 system. With its durable brass construction and secure air tube connection, this valve is a must-have for any serious aquarist. ## Description Product Features: Prevents back-siphoning to protect CO2 system from water damage and flooding during power outage. Brass is a highly corrosion resistant material in high humidity environment and has lasting durability and less leakage. Air tube tightening nut ensures secure air tube connection and continuous air-flow. Arrow marking showing the direction of flow - away from your regulator. Compatible with AQUATEK CO2-Proof tubing. NOTE: Designed for CO2 system only, not for air pump, requires 25 psi minimum working pressure ## Features - Perfect for aquarium and fish tanks. Prevents back-siphoning to protect CO2 system from water damage and flooding during power outage. NOTE: Designed for CO2 system only, not for air pump, requires 25 psi minimum working pressure - Brass is a highly corrosion resistant material in high humidity environment and has lasting durability and less leakage - Air tube tightening nut ensures secure air tube connection and continuous air-flow. - Arrow marking showing the direction of flow - away from your regulator - Perfect for pressurized CO2 system and planted aquarium tanks. ## Images ![AQUATEK Premium Brass Check Valve for Planted Aquariums - Image 1](https://m.media-amazon.com/images/I/817XiyR64yL.jpg) ![AQUATEK Premium Brass Check Valve for Planted Aquariums - Image 2](https://m.media-amazon.com/images/I/814yG110KqL.jpg) ![AQUATEK Premium Brass Check Valve for Planted Aquariums - Image 3](https://m.media-amazon.com/images/I/81EzBUUHFHL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great valve *by A***R on July 14, 2024* I had ordered this and received one that was not working. I was able to return for another one and it works perfectly. Love that now my CO2 tube doesn’t pop off anymore. Great product. ### ⭐⭐⭐⭐⭐ Please read if water is still running back. Maybe this will work *by D***A on May 15, 2022* Worked as intended, I did place the the check valve after the bubble counter, because if I placed it before the reactor Im using sucks out the bubble do to negative pressure and couldn't measure the bubble rate. Reactor would suck out the gas out the line.Ps -Is you have water running back in the tube1- wrong tubing that doesn’t handle high pressure and leaks. Tubing should be thicker and stiff vs the soft thin kind like for air stones or petco tubing etc.2- recheck all connections for leaks. If the air leaks out then the pressure leaks and water runs back in. ### ⭐⭐⭐⭐⭐ Works great! Love the secure tightening nuts! *by N***T on January 6, 2018* Works great! Seems to be preventing backflow. Tested backwards just to make sure ;].The tightening nuts work a treat. They hold the tubing on very securely. I used this with the AQUATEK CO2-Proof Tubing and had no leaks or issues of any kind.If you get similar tubing, I would recommend boiling a mug of water in the microwave, and then holding the end (about the last inch or so) of the tubing in the water for about 30 seconds. The tubing becomes very flexible, and can then be put on very easily. Depending on your tubing, this may not be necessary (or recommended). --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/57718256-aquatek-premium-brass-check-valve-for-planted-aquariums](https://www.desertcart.hr/products/57718256-aquatek-premium-brass-check-valve-for-planted-aquariums) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-25*