Easy Maintenance: Clean the valve regularly. Please poke it with a slim stick from the inlet side to push it open when it gets clogged inside and restricts air flow. Sturdy & Quiet: Made of reliable plastic which can be tightly connected to the hose without air leak. Durable to endure long-time use without making noise. Ideal Pump Protectors: Prevent backflow of water through the tubing during a power outage or pump pause. Essential accessories for basic aeration setup in your fish tanks. Small & Light: Size: 2.1" L x 0.55" W; Diameter of air holes: 0.12"; Weight: 0.1 oz. Standard ID airline tubing: 3/16". Add little weight to your hose for smooth airflow. For Oxygen Pumps Only: Great one-way check valve for most common aquarium air pumps. NOT suitable for CO2 or other high-pressure systems to avoid crack and leak.

Item Dimensions LxWxH: 3.5 x 1.6 x 0.4 inches. Item Weight: 0.04 Pounds. Material: Plastic. Brand: Pawfly. Color: Red. Date First Available: November 14, 2016. Best Sellers Rank: #6,939 in Pet Supplies. Customer Reviews: 4.5 out of 5 stars 3,833 ratings 4.5 out of 5 stars. : B01N92AXHF. Batteries Required?: ?No. Batteries Included?: ?No. Item Package Quantity: ?1. Pattern: ?6 Pack. Size: ?6 Pack. Is Discontinued By Manufacturer: ?No. Item model number: ?Naludo-NL147. Product Dimensions: ?3.5 x 1.6 x 0.4 inches. Item Weight: ?0.64 ounces. Part Number: ?Naludo-NL147. Manufacturer: ?Pawfly. Power Source: ?Corded Electric. Item Dimensions LxWxH: ?3.5 x 1.6 x 0.4 inches. Item Weight: ?0.04 Pounds. Material: ?Plastic. Brand: ?Pawfly. Color: ?Red.