uxcell Fish Tank Aquarium Red Clear Plastic Air Pump Check Valves 5 Pcs

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Feature

Product Name : Check Valve;Use for : Fish Tank, Aquarium
Air Hole Diameter : 3mm/ 0.12";Overall Size : 5.3 x 1.5cm/ 2.1" x 0.58"(L*Max.D)
Material : Plastic;Color : Clear, Red
Net Weight : 19g
Package Content : 5 Pcs x Aquarium Check Valve

Description

Protect you air pump by preventing aquarium water from back siphoning during a power outage.Place in your airline tubing between your air pump and aquarium water to prevent water returning down the air line.