Premium UPVC Silent Clear Lift Check Valve
Prevent catastrophic tank floods and back-siphoning during power outages with the Tianyan True Union Check Valve from Atradesen.com. Specifically engineered for demanding aquarium environments, this advanced non-return valve ensures water only flows one way while offering a transparent center body for instant visual flow inspection.
🌟 Advanced Silent & Reef-Safe Design
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100% Metal-Free Construction: Made entirely of high-grade UPVC with zero metal springs or screws. Completely rust-proof and 100% safe for sensitive marine reef aquariums and freshwater tanks.
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Silent Lift-Shaft Mechanism: Unlike noisy traditional flap valves, this unique vertical lift-shaft minimizes friction and eliminates annoying "clacking" noises during operation.
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Transparent Enlarged Core: The oversized clear viewing window reduces water flow restriction and allows you to easily monitor the valve's operation and cleanliness.
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True Union Detachable Ends: Easily unscrew the threaded locking nuts to remove the entire valve body for cleaning or maintenance without ever cutting your PVC pipes!
🚨 CRUCIAL Installation Guide (MUST READ!)
To ensure this check valve seals properly, please strictly follow the Atradesen.com installation rules:
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⚠️ VERTICAL INSTALLATION ONLY: Because this is a gravity-assisted "Lift" check valve, it MUST be installed perfectly vertically (straight up and down) on your return pump line. Installing it horizontally will cause it to fail and leak!
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PVC Glue Required: The inner sockets require standard PVC cement/glue to bond permanently with your metric hard PVC pipes.
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20mm Model: Fits 20mm O.D. Pipe | Valve Height: 113mm
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25mm Model: Fits 25mm O.D. Pipe | Valve Height: 113mm
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32mm Model: Fits 32mm O.D. Pipe | Valve Height: 110mm
