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Function:
1 Made of high quality material, it is durable, resistant to aging and guarantees a long life.
2. Easy to install check valve fits most aquarium pumps.
3 Excellent one-way check valve can effectively protect the pump
4 Fits standard aquarium line tube with an inner diameter of 3mm / 0.2in.
5 10PCS check valve is enough for daily use and replacement.


How to use:
Connect Stop Valve Oxygen Pump

Specifications:
Item Type: Check Valve
Material: Plastic
a> Product quantity: 10pcs
Inner Diameter: 0.2 in (3 mm)
Single Product Weight: Approx. 0.1oz (3g).







Package List:
10 x Unidirectional Check Valve

Note:
One check valve is required for each outlet and two for double head pumps.