Aquarium Air Control Valves For 4-6mm Id Plastic Airline Pipe One-Way Air Flow Regulators Adjustable Regulators Black Pipe Connectors Pack Of 10

Single Way Valves: T-shaped structure with a single straight way for air passage. Ideal for fish tanks, aquariums, aquaculture, gardening or drip irrigation systems. Compact size: 3.8 x 2 cm. Suitable for standard air tubes from 4 to 6 mm inner diameter. The layers on each joint allow a close connection with the hose to effectively prevent slipping. Free adjustment: simply turn the knob and adjust it from closed to wide open to adjust the air flow. The texture of the button surface prevents slipping during use. Reliable Plastic:Made of durable and healthy plastic for long term use, it has no harmful effect on your lovely fish. Extremely lightweight, it installs effortlessly. Easy to Install Cut the air tube into 2 sections and insert the air control valve directly to connect them. Turn the knob counterclockwise to open and clockwise to close. ...