Check Valve for Aquarium Air Pump Anti-Backflow Suitable for 4mm ID Tube

Description

Check Valve for Aquarium Air Pump Anti-Backflow Suitable for 4mm ID Tube
Features: 100% brand new and high quality
The check valves are for common aquarium air pumps. Please DO NOT use them with CO2 system. Great one way check valve for aquarium and fish tank.
Protect you air pump by preventing aquarium water from back siphoning during a power outage.
Made of durable clear plastic. Please use a paperclip to poke it from Input side to Output side when the outlet inside gets stuck.
Suitable for 4 mm/0.15 inches i.d. oxygen tube.
Easy installation, just insert the connector directly into the air tube.
Specifications: Material: PVC
Color: Blue/Black S/Black L/Transparent L/Red L
Size: Suitable for 4mm/0.16in I.D. Oxygen Tube
Weight (Approx.):
Blue/Black S-3g
Black L/Transparent L/Red L-5g
Package Includes: 1 Piece Aquarium Check Valve (Blue/Black S/Black L/Transparent /Red)
note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!