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Wchiuoe 3/ 5/ 7mm Optional Non-Return Check Valve, One-Way Check Valve, For Aquarium Fish Tanks

<ul><li>3 different sizes for you to choose, meet your different needs.</li><li>When the position of the air pump is lower than the water , prevent the backflow of water from damaging the front air pump or other equipment. After adding the check valve, the air pump can be placed above the water or below the water surf</li><li>Prevent the water in the fish tank from flowing back into the air pump and burn the air pump to avoid danger.</li></ul>

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<div ><p><b>Feature:</b></p>1. Using plastic material, beautiful and durable.<br>2. When the position of the air pump is lower than the water , prevent the backflow of water from damaging the front air pump or other equipment. After adding the check valve, the air pump can be placed above the water or below the water , and there will be no backflow of water when the air pump stops working.<br>3. Prevent the water in the fish tank from flowing back into the air pump and burn the air pump to avoid danger.<br>4. Wonderful accessory for aquarium air pump.<br>5. 3 different sizes for you to choose, meet your different needs.<p><br></p><p><b>Specification:</b></p><div class="wang-edit-text"><div>Condition: 100% Brand New</div> <div>Item Type:&nbsp;Non-Return Check Valve</div> <div>Material: plastic</div> <div>Color: As picture shown</div> <div>Optional Size: 3mm, 5mm, 7mm</div><p></p><div></div><p></p><div><div>3mm: The interface diameter is 3mm/0.1in<br>5mm: The interface diameter is 5mm/0.2in<br>7mm: The interface diameter is 7mm/0.3in</div></div><p>Suitable for: Aquarium air pump<br>Function: Used as an oxygenation pump due to the water<span >&nbsp;current&nbsp;reversed due to the pressure difference between the inside and outside when it suddenly stops working, damages the oxygenation pump and causes the water in the tank to overflow to form property damage, prevents the water in the fish tank from flowing back into the air pump, and burns the air pump to avoid danger. Indispensable accessories for air pumps.<br></p> <div><br></div><style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style></div><p><br></p><p><b>Package List:</b></p>10 x Non-Return Check Valve</div>

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