What size is actual pipe connection? 3”?

4" but It's not american plumbing dimesions. The female (top) will require you to remove some material on sch 40 pvc. It can be done quickly and even on a lathe. Bottom part can be connected with no hub style coupling. Its a great fitting option if you dont have a spot for a horizontal backflow. Dont know why we dont have alot of these vertical waste back flows here.

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🛠️ Protect your space, prevent the flood—effortless, reliable, essential.

ROBUST FLOOD DEFENSE - Automatically prevents backflow, safeguarding your property from costly water damage.
COMPACT LIGHTWEIGHT - At just 1 kg and compact dimensions, it’s easy to handle and install in tight spaces.
PREMIUM BUILD QUALITY - Crafted from stainless steel, polypropylene, and rubber for long-lasting durability.
CERTIFIED SAFETY ASSURANCE - CE certified to meet rigorous European standards for peace of mind.
EFFORTLESS VERTICAL INSTALLATION - No costly pipe conversions—fits directly on vertical drains for quick setup.

The 110mm Vertically Assembled Anti Flooding Backwater Drain Check Valve by Karmat is a CE-certified, stainless steel and polypropylene valve designed for vertical sewer pipe installation. It automatically prevents backflow flooding, offering a cost-effective, durable solution to protect buildings from water damage without requiring pipe modifications.

$365

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Great price for an authentic product. Fast international shipping too!

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Manufacturer	Karmat
Part Number	448
Package Dimensions	29.2 x 21.9 x 19.9 cm; 1 kg
Manufacturer reference	448
Material	Stainless Steel, Polypropylene (PP), Rubber
Item Package Quantity	1
Certification	CE
Batteries included?	No
Batteries Required?	No
Item Weight	1 kg

110mm Vertically Assembled Anti Flooding Backwater Drain Check Valve Backflow Prevention

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