6 PCS Aquarium Check Valves One Way Non return Protector Air Pump Accessories, Prevent Backflow in Fish Tank Airline Tubing, Durable & Easy-to-Install One-Way Valves for Aquarium Air Pumps Black

【Aquarium Check Valves One Way Non-return Protector Air Pump Accessories】 Designed exclusively for oxygen air pumps, these one-way check valves help prevent water backflow into your equipment, protecting your system during power cuts or pump pauses. Not suitable for CO2 or other high-pressure setups to avoid cracking or leakage. A must-have in your aquarium setup. 【Compact and Lightweight Design】Each valve measures 4.2 x 1.27 cm, with a 0.3 cm air hole diameter and weighs only 2.1 g. Compatible with 4-6 mm standard inner diameter airline tubing, they allow smooth and consistent airflow without adding weight to your setup. 【Effective Backflow Protection】These Aquarium Check Valves One Way Non-return Protector Air Pump Accessories provide dependable non-return functionality, keeping water from flowing back into your air pump when it's off. Ideal for when you're at work, on holiday, or during power interruptions, offering peace of mind and system protection. 【Sturdy and Airtight Build】 Made from high-quality, durable plastic, these valves form a tight seal with your tubing to eliminate air leaks and restrictions. A great addition to your Aquarium Check Valves One Way Non-return Protector Air Pump Accessories, ensuring optimal performance and long-lasting use. 【Easy to Clean and Maintain】 Featuring a detachable design, the valves are simple to take apart for cleaning. If airflow is restricted, gently insert a small tool to unclog the valve. No need for complex tools-just practical, reliable maintenance for your Aquarium Check Valves One Way Non-return Protector Air Pump Accessories.