Need to stop air, water, or fuel from flowing backwards in your system? These simple one-way check valves do exactly that. You get two in the pack, made from tough, high-strength plastic with a nickel-plated finish that resists corrosion and ozone – great for compressors, aquariums, fuel lines, or irrigation. They have 1/2 inch hose barb connections on both ends (the wider part is about 13.4mm, the narrower is 12mm), so they grip standard tubing tightly. The whole valve is about 2.46 inches (62.5mm) long. Installation is dead easy: just make sure the arrow printed on the side points in the direction you want the flow to go, slide your tubing onto the barbs, and clamp it. You can mount them vertically or horizontally. They're a super cheap and effective way to prevent backflow, protect your pump, or keep water from siphoning out of a tank. A must-have for DIYers, hobbyists, or anyone tinkering with fluid or air systems.
