HAPPY FINS Aquarium Red Clear Plastic One Way Non-return Check Valve | Pack Of 10 | Aquarium Tool
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The check valve 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.Check valve is made of durable clear plastic. Net weight: 0.14 oz / 4 g. Please use a paperclip to poke it from Input side to Output side when the outlet inside gets stuck.Check Valve air Hole Diameter: 0.15? / 4mm; Overall Size: 2.1? x 0.58? / 5.3 x 1.5 cm (L*Max.D)
