Premium SanKing UPVC Flapper Check Valve
Protect your water pumps and prevent catastrophic back-siphoning floods with the SanKing Grey-Black Flapper Check Valve from Atradesen.com. Engineered for professional sumps, marine reef tanks, and critical water supply lines, this highly reliable non-return valve ensures water only flows in one direction while perfectly matching the sleek, stealthy look of grey UPVC plumbing setups.
🌟 Advanced Flap Design & Ultimate Convenience
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Horizontal OR Vertical Mounting: Unlike "Lift/Ball" 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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Low Flow Resistance & Quiet: The swinging flap design creates significantly less water friction and head pressure loss than spring-loaded valves, resulting in a smoother, quieter operation that won't choke your pump's output.
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100% Metal-Free & Safe: Constructed purely from chemical-grade UPVC with zero metal components. Highly resistant to acids/alkalis and completely safe for saltwater reef aquariums.
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Union Nut Design: Features a threaded union collar on one end, allowing you to easily detach the pipe section for future maintenance or replacement.
⚠️ 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 large molded arrow on the body 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 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 slip joints to secure your pipes permanently.
