10Pcs One Way Check Valve Non-Return Oxygen Air Pump Check Valve with Transparent Plastic Design for Aquarium Fish Tank (Black)

• 【Non-Return Design】The aquarium air pump check valve prevents water back from damaging front-end air pumps or other product equipment, which is an essential accessories of pump
• 【Sales Service】If for any reason you're not completely happy with your purchase， if it breaks, if it's damaged in shipping, or even if you change your mind - simply let us know and we will handle it quickly!
• 【High Quality】The check valve is made of high quality material, which provides performance and long service time
• 【Widely Application】The aquarium air pump check valve is suitable for aquarium, fish tank, fishing tackle shop, etc
• 【Pump Protection】The check valve greatly protects the oxygenation pump from damaging by water retrograde into pump and prevents aquarium water from back siphoning during a power outage.

Specification: Item Type: Aquarium Check Valve Material: Plastic Optional Color: White, Red, Black Quantity: 10Pcs Item Size: 10 * 10 * 3cm / 3.9 * 3.9 * 1.2inch Package Weight: Approx. 30g Package List: 10 * Aquarium Check Valve Note: One check valve is required for each outlet. Two-head air pump requires two check valves.