Dymax AP500 Air Pump is a silent and low vibration, equipped with synthetic diaphragm to regulate steady air compression. 1 outlet , no pressure control – 3 Watt
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)