Any danger of backflow into the RO system if the Ptrap is clogged?

I would assume it depends on how high up into the pipe you place it. You can put a check valve in line with the drain to prevent this. Most RO’s come with an inline check valve but you can add one if you would like. The back-flow pressure of the drain valve is stronger than the drain pipe in the sink so it should prevent backup.

Will it fit a 2in drain pipe? It's said 40-50mm, and 50mm is slightly less than 2in. So want to make sure

If you use the little sponge square that is supplied with it , it should

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🚰 Upgrade your RO setup with leak-proof confidence!

EFFORTLESS QUICK CONNECT - Snap on or off with the 1/4" leak-proof fitting for zero-fuss tubing swaps.
COMPLETE INSTALLATION KIT - Includes bolts, nuts, and clamps for a seamless, tool-friendly setup.
CERTIFIED QUALITY ASSURANCE - Meets ANSI, NSF, UPC, and WQA standards for trusted, safe water filtration.
BUILT TO LAST UNDER PRESSURE - Engineered from durable POM plastic to withstand up to 3.0MPa without leaks.
UNIVERSAL FIT FOR RO SYSTEMS - Perfectly compatible with 40-50mm outer diameter pipes, ideal for under-counter water filters.

The SDTC Tech 1-Pack Drain Saddle Valve features a 1/4" quick connect fitting designed for reverse osmosis systems, made from durable POM plastic that resists abrasion and aging. It fits 40-50mm OD pipes and withstands pressures up to 3.0MPa without leakage. The package includes all necessary hardware for easy installation and meets multiple industry certifications, ensuring reliable and safe water filtration connections.

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€ 30.23

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Great experience from order to delivery. Highly recommended!

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Manufacturer	SDTC Tech
Part number	H-SADDLE-VALVE-1
Item Weight	50 g
Package Dimensions	11 x 9.91 x 3.2 cm; 50 g
Item model number	779303535754
Color	1-pack
Material	Plastic
Maximum Pressure	3000 Pascal
Specification met	ANSI B1.20.1, ANSI B16.11, ASSE, NSF, UPC, WQA
Batteries Required?	No

SDTC Tech 1-Pack Drain Saddle Valve with 1/4" Quick Connect Plastic Water Filters Valve Clamp for Reverse Osmosis System

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