DXBNEZBC 8 Pcs Aquarium Check Valves One Way Non-return Protector Air Pump, Aquarium Air Pump Check Valves for Airline Tubing Fish Tank (Black)

【Aquarium Check Valves - One Way Non-return Protector for Air Pumps】 Specially designed for oxygen air pumps, these check valves prevent water from flowing back into your equipment, protecting your system during power outages or temporary pump stops. Please note: not suitable for CO2 or other high-pressure applications to prevent cracking or leakage. Essential for maintaining a safe and reliable aquarium setup. 【Compact Size & Precise Airflow】 Each valve measures 5.3 cm (2.1 in) in length, 1.35 cm (0.53 in) in height, with a 4 mm (0.16 in) air hole diameter. Lightweight and compact, they fit standard airline tubing, ensuring smooth and consistent airflow without adding bulk to your system. 【Reliable Backflow Prevention】 These one-way valves provide effective non-return functionality, keeping water from flowing back into your air pump when it’s off. Perfect for home aquariums, fish tanks, or hobby setups, giving you peace of mind while away. 【Durable & Sturdy Construction】 Made from high-quality, long-lasting plastic, these valves resist aging and maintain a tight, leak-free seal with your tubing. Their robust build ensures stable performance and long-term use in aquatic environments. 【Easy to Maintain & Clean】 The detachable design allows quick disassembly for cleaning. If airflow is restricted, simply poke a slim stick from the inlet side to unclog the valve. Simple, practical maintenance keeps your aquarium running smoothly without extra tools.