Premium Clear PVC Sewer Backflow Preventer (50mm) | Anti-Odor & Bug Flapper Check Valve | Kitchen Drain Plumbing
Premium Clear PVC Sewer Backflow Preventer (50mm) | Anti-Odor & Bug Flapper Check Valve | Kitchen Drain Plumbing
Premium Clear PVC Sewer Backflow Preventer (50mm) | Anti-Odor & Bug Flapper Check Valve | Kitchen Drain Plumbing
Premium Clear PVC Sewer Backflow Preventer (50mm) | Anti-Odor & Bug Flapper Check Valve | Kitchen Drain Plumbing
Premium Clear PVC Sewer Backflow Preventer (50mm) | Anti-Odor & Bug Flapper Check Valve | Kitchen Drain Plumbing
Premium Clear PVC Sewer Backflow Preventer (50mm) | Anti-Odor & Bug Flapper Check Valve | Kitchen Drain Plumbing

    Premium Clear PVC Sewer Backflow Preventer (50mm) | Anti-Odor & Bug Flapper Check Valve | Kitchen Drain Plumbing

    $30.00

    🔄 Need rigid pipes to complete your new drain setup? Check out our Premium UPVC Rigid Water Pipes.

    Premium Transparent PVC Sewer Backflow Preventer

    Protect your home from disastrous sewage backups, foul odors, and sewer insects with the Transparent Backflow Preventer Valve from Atradesen.com. Specifically engineered for low-floor apartments and residential plumbing, this essential check valve fits standard 50mm kitchen and bathroom drain pipes, ensuring wastewater only flows out and never comes back in!

    🌟 Ultimate Home Protection & Easy Maintenance

    • Odor & Insect Proof: The internal flapper defaults to a tightly closed position when water isn't flowing. This acts as an impenetrable barrier against foul sewer gases, roaches, and pests crawling up your drains.
    • Transparent Screw-On Lid: Drain pipes frequently catch hair and grease. The clear top allows you to instantly inspect the valve for clogs. The threaded screw-on lid lets you quickly open and clean the chamber by hand without ever needing a plumber or a saw!
    • Prevents Flooding: A true lifesaver for ground-floor residents. If the municipal sewer line clogs and backs up, this valve automatically snaps shut, keeping toxic wastewater out of your sinks and floors.

    ⚠️ Installation & Style Guide (Crucial!)

    Avoid plumbing disasters! Please read the Atradesen.com installation rules carefully:

    • 🚨 HORIZONTAL vs. VERTICAL MODELS: These two styles have completely different flow paths! The Horizontal Model is for straight pipe runs along the floor. The Vertical Model features a 90-degree drop and is for pipes turning straight down. Choose exactly based on your current pipe layout!
    • 🚨 DIRECTIONAL ARROW: You MUST install the valve so the molded arrow on the body points in the direction of the exiting wastewater.
    • Sizing Logic: The 50mm size refers to the Inner Diameter (I.D.) of the sockets. It is designed to sleeve OVER standard 50mm Outer Diameter (O.D.) PVC drain pipes. PVC waterproof cement must be used (glue not included).

    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?

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    Preferred Material

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    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:

    • Factory Direct Pricing

    • Strict Quality Control

    • OEM & ODM Manufacturing

    • Fast Global Shipping

    • Professional Customer Support

    • Flexible Order Quantities

    • 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

    ✅ Flat Rate Shipping: $25 on orders below $300
    🎉 FREE Shipping on orders over $300
    📦 Processing Time: 1–3 Business Days
    🇺🇸 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)
    📍 Tracking Number Included
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