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

Product ID: 335322197

Details

Brand
SDTC Tech
Exterior finish
Eva Plastic
Inlet connection size
0.25 Inches
Inlet connection type
Compression
Material
Plastic

🔗1/4" quick connect fitting

⚙️3.0MPa pressure resistance

🛠️Fits 40-50mm OD pipes

¥2717

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Effortless RO Drainage, Zero Leaks, All Confidence

HIGH PRESSURE ENDURANCE - Withstands up to 3.0MPa without a drip—built for professional-grade reliability.
DURABLE POM CONSTRUCTION - Engineered for abrasion, impact, and aging resistance to last through years of use.
LEAK PROOF QUICK CONNECT - Snap in or out with zero hassle—perfect for fast RO system setups.
COMPLETE INSTALLATION KIT - Includes bolts, nuts, and clamps for an intuitive, tool-friendly setup experience.
UNIVERSAL FIT FOR STANDARD PIPES - Designed to clamp securely on 40-50mm OD pipes, ensuring a tight, leak-free seal.

The SDTC Tech 1-Pack Drain Saddle Valve is a robust, quick-connect valve designed specifically for reverse osmosis systems. Made from durable POM plastic, it fits 40-50mm outer diameter pipes and resists pressures up to 3.0MPa without leaking. Its leak-proof EVA filter element and included hardware make installation straightforward and reliable, ensuring your water filtration setup stays secure and efficient.

Specifications

ASIN	B08GSQK7K1
ASIN	B08GSQK7K1
Brand Name	SDTC Tech
Connector Type	Compression
Customer Reviews	4.6 4.6 out of 5 stars (300)
Customer reviews	4.6 4.6 out of 5 stars (300)
Date First Available	12 March 2021
Exterior Finish	Eva,Plastic
Inlet Connection Size	0.25 Inches
Inlet Connection Type	Compression
Item model number	779303535754
Manufacturer	SDTC Tech
Manufacturer	SDTC Tech
Manufacturer Part Number	H-SADDLE-VALVE-1
Material Type	Plastic
Maximum Operating Pressure	3000 Pascal
Model Number	779303535754
Number of Items	1
Number of Packs	1
Number of Pieces	1
Number of Ports	2
Outlet Connection Size	0.25 Inches
Outlet Connection Type	Compression
Package Dimensions	11.2 x 9.8 x 3.51 cm; 50 g
Set Name	Single Valve
Specification Met	ANSI B1.20.1, ANSI B16.11, ASSE, NSF, UPC, WQA
Thread Type	NPT
UPC	779303535754
Unit Count	1.0 Count
Valve Type	Globe Valve

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