Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing
Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing
Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing
Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing
Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing
Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing
Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing
Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing
Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing
Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing

    Premium SanKing UPVC Flapper Check Valve (20-63mm) | Horizontal & Vertical Mount Non-Return Valve | Anti-Siphon Plumbing

    $21.36

    πŸ”„ Want to visually monitor the internal flap for clogs? Check out our Premium Clear UPVC Swing Check Valves.

    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

    • 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)!
    • 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.
    • 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.
    • 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:

    • 🚨 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!
    • 🚨 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.
    • Connection Method: PVC waterproof adhesive/glue MUST be used on the slip joints to secure your pipes permanently.

    Get a Free Quote

    Thank you for your interest in Atradesen.

    We specialize in high-quality hardware fittings, PVC & UPVC pipe fittings, aquarium accessories, irrigation components, water filtration products, and industrial supplies.

    Whether you are purchasing a single item, placing a bulk order, or looking for OEM manufacturing, our professional sales team is ready to provide you with the most competitive quotation.

    Why Request a Quote?

    βœ” Competitive Factory Pricing

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    Purchase Requirements

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    Preferred Material

    • PVC
    • UPVC
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    Size / Specification

    Example:

    • 1/2"
    • 3/4"
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    • 25mm
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    Application

    • Aquarium
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    Submit Your Request

    Click the Submit button below and our sales team will contact you within 24 business hours.


    Why Choose Atradesen?

    Atradesen is committed to providing reliable products and professional services to customers worldwide.

    We work with wholesalers, distributors, retailers, contractors, aquarium stores, hardware stores, irrigation suppliers, and industrial buyers.

    Our advantages include:

    β€’ Factory Direct Pricing

    β€’ Strict Quality Control

    β€’ OEM & ODM Manufacturing

    β€’ Fast Global Shipping

    β€’ Professional Customer Support

    β€’ Flexible Order Quantities

    β€’ Secure Online Shopping


    Frequently Asked Questions

    How long does it take to receive a quotation?

    Our sales team usually replies within 24 business hours.


    Do you offer wholesale pricing?

    Yes.

    We provide special pricing for wholesalers, distributors, retailers and bulk purchases.


    Can you manufacture OEM products?

    Yes.

    OEM and ODM services are available.

    Custom logo, packaging and product modifications are supported.


    What is your Minimum Order Quantity (MOQ)?

    MOQ depends on the product.

    Please contact us for detailed information.


    Which countries do you ship to?

    We ship worldwide.

    Shipping methods include DHL, UPS, FedEx, EMS, Air Freight and Sea Freight.


    Contact Information

    Atradesen

    Website

    https://atradesen.com

    Email

    tradesencom@gmail.com

    Phone

    +86-152-6063-0787

    WhatsApp

    +86-152-6062-9033

    Business Hours

    Monday – Friday

    09:00 – 18:00 (UTC+8)


    Thank You

    Thank you for choosing Atradesen.

    We appreciate your inquiry and look forward to building a long-term business relationship with you.

    Our goal is to provide reliable products, competitive pricing and excellent customer service for customers around the world.

    🚚 Shipping Guarantee

    βœ… Flat Rate Shipping: $25 on orders below $300
    πŸŽ‰ FREE Shipping on orders over $300
    πŸ“¦ Processing Time: 1–3 Business Days
    πŸ‡ΊπŸ‡Έ USA Delivery
    5–7 business days (Free Shipping)
    7–15 business days (Standard)
    🌍 International Delivery
    5–8 business days (Free Shipping)
    8–15 business days (Standard)
    πŸ“ Tracking Number Included
    πŸ”’ Secure packaging to protect your products during transit.

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