Keep your aquarium air system running smoothly and prevent messy backflows with this simple metal check valve. It's a one-way valve that lets air flow from your pump to your air stone or diffuser but stops water from siphoning back into the pump—which can damage it. Made from sturdy metal, it's strong, durable, and built to last. It's designed for quick insertion with tubing that has a 6mm outer diameter (like standard airline tubing). The working pressure range is 0.15 to 1.0 MPa (up to 150 PSI), with a max pressure of 1.5 MPa. Installation is a snap: connect one end to your air pump line and the other to your diffuser or airstone. It's a small, affordable part that provides big protection for your aquarium setup. The valve is about 4.5 cm long and comes as one piece. A must-have for any air-driven aquarium system!
