M METERXITY 24-Pack Aquarium Air Check Valve, Plastic One Way Non-Return Valves Air Valve Air Tubing Accessories Air Pump Accessories for 3/16" Airline Tubing Fish Tank [Black White](Disclaimer)

Product description

• [Multipurpose Use] - Plastic one way non-return check valve suits most aquariums, fish tank scenes, and fishing tackle shops, especially those equipped with 3/16" air tubes.
• It can also be used in oxygen pumps to prevent water back-suction [Durable Check Valve Aquarium] - Our air tube check valve for aquarium air pump is made of PVC, which is durable and not easy to break.
• With corrosion-resistant silicone, soft and wear-resistant and can ensure long-term use.
• Its design can be tightly connected to the hose without air leaking, and it will not make noise during long-term use [Size & Package] - Package Includes:24-Pack x One Way Air Valve; Overall Size: 43 x 13 mm / 1.69 x 0.51"(L x W); Air Hole Diameter: 4.5 mm/0.18"; Applicable Pipe Size: 3/16" [Advantage] - The check valve aquarium has a reliable protection function, effectively preventing water backflow in the pipe and protecting your air pump.
• The detachable design also makes it easier for you to disassemble and clean [Attention] - There is a small arrow on the main body of the product, the head of the arrow is an air outlet, and the tail end is an air inlet.
• If no air is found, check whether the installation sequence is correct.
• If the check valve is blocked or the airflow is not smooth, you can poke the blockage from the air intake side