10PCS PP Aquarium Pump Diameter Unidirectional Check Valve Fish Supplies Accessory

Made of high quality PP material, good durability and service life. When the position of the pump is lower than the of the water, to prevent water backflow damage to the front end of the pump or other product equipment, after the addition of stop valve pump can be higher than the of the water or lower than the of the water placed. There is no danger of water backflow when the pump is cut off and stopped working, it is the small guard of the gas supply facility. Condition: 100% Brand New Item Type: Check Valve Material: PP Color: As Picture Shown Quantity: 10PCS One Way Confirmation : If Not Identified, Mouth Test Blowing, Blowing Can Confirmed In and Out Suitable: Hose Weight: Approx. 40g Both Ends Diameter: Approx. 5mmCelsius0.20inch, 7mmCelsius0.28inch

Diameter: Approx. 5-7mmCelsius0.20-0.28inch