Premium Clear UPVC True Union Swing Check Valve
Prevent catastrophic back-siphoning and floods during power outages with our state-of-the-art Clear UPVC Swing Check Valve from Atradesen.com. Engineered for professional sumps, marine reef tanks, and critical water supply lines, this "True Union" flap valve offers ultimate reliability, high visibility, and unrestricted flow dynamics.
🌟 Advanced Flap Design & Ultimate Convenience
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Horizontal OR Vertical Mounting: Unlike "Lift" style check valves that only work straight up and down, this advanced "Swing/Flap" mechanism works flawlessly whether installed vertically or completely flat (horizontally)!
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Crystal Clear Visibility: The transparent body allows you to instantly inspect the internal flap. If a snail, algae, or debris ever prevents the flap from closing, you'll see it immediately before a flood happens!
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True Union Quick-Release: Features threaded union nuts on both ends. You can completely remove the center valve body for cleaning or replacement without ever cutting your glued PVC pipes.
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100% Metal-Free & Corrosion Proof: Built entirely from premium UPVC and silicone seals. With no metal springs, it is absolutely safe for saltwater reef tanks and harsh chemicals (Rated for 1.0 Mpa / Max 55°C).
⚠️ Installation & Sizing Guide (Crucial!)
Ensure a flawless, leak-proof setup by reviewing the Atradesen.com guidelines below:
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🚨 DIRECTIONAL INSTALLATION: Check valves only let water flow in ONE direction. You MUST install the valve so the molded arrow points in the direction of your pump's water flow!
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🚨 SIZING LOGIC (Inner Dia. matches Outer Dia.): The sizes listed (e.g., 32mm) refer to the Inner Diameter (I.D.) of the two union sockets. They are designed to sleeve OVER your rigid PVC pipes.
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Connection Method: PVC waterproof adhesive/glue MUST be used on the two outer slip joints to secure your pipes permanently to the union halves.
