RO Tubing
John Guest - LLDPE Polypropylene Tubing
Stenner (AK4002W) Tubing White 20FT 1-4" OD
Professional Grade Components
Premium RO Tubing Solutions for Reverse Osmosis Systems
High-quality tubing designed for reliable water connections and long-lasting performance in residential and commercial filtration systems
Water filter tubing plays a critical role in reverse osmosis and other filtration systems, connecting filters, RO storage tanks, and faucets while ensuring a sealed, leak-free pathway for purified water. Our comprehensive tubing selection includes brine line, drain line, and feed line options in various materials and sizes to match your specific installation requirements.
Tubing Categories
Types of RO Tubing We Offer
Drain Line Tubing
Specialized tubing for waste water discharge from your RO membrane, available in larger diameters like 5/8" OD and 3/4" OD to handle higher flow rates. These tubes efficiently remove rejected water and contaminants from your system to maintain optimal performance and prevent backpressure issues.
Brine Line Tubing
Durable 5/16" OD tubing designed to carry concentrated waste water away from the RO membrane during the filtration process. Built to withstand exposure to high TDS levels and mineral content, brine line tubing ensures consistent system operation and proper rejection rates over extended use.
Feed & Distribution Tubing
Versatile 1/4" and 3/8" OD tubing made from LLDPE polypropylene or polyethylene for connecting filters, tanks, and faucets throughout your water system. Food-grade materials ensure your purified water remains uncontaminated while flexible construction allows for easy routing through cabinets and tight spaces.
Installation Process
How to Install RO Tubing
Measure and Cut
Measure the distance between connection points and cut your tubing with a sharp tube cutter or utility knife to ensure clean, square edges. Leave a few extra inches to account for bends and to prevent tension on fittings, which can lead to leaks or disconnections over time.
Insert into Fittings
Push the tubing firmly into quick-connect fittings or John Guest connectors until you feel resistance and the tube is fully seated against the internal stop. The collet inside the fitting will grip the tubing securely and create a watertight seal without requiring tools or clamps.
Test for Leaks
Turn on your water supply and pressurize the system, then carefully inspect each connection point for drips or moisture. If you detect any leaks, depressurize the system, remove the tubing, recut the end if necessary, and reinstall to achieve a proper seal before regular operation.
Pro Tip: Always purchase tubing that matches or exceeds your system's pressure rating, and replace tubing every 3-5 years even if it appears intact, as UV exposure and mineral deposits can degrade the material over time and compromise water quality or cause sudden failures.
Food-Grade Safety
All our tubing is manufactured from NSF-certified, BPA-free materials that meet strict standards for potable water contact. This ensures no harmful chemicals or plasticizers leach into your purified drinking water, maintaining the purity and taste you expect from your filtration system.
Pressure Resistant
Engineered to handle standard residential water pressure up to 100 PSI and maintain integrity under continuous use. Our tubing resists kinking, cracking, and splitting even in tight installation spaces, providing reliable performance throughout the life of your reverse osmosis system.
Universal Compatibility
Available in industry-standard sizes that work seamlessly with John Guest, APEC, iSpring, and other major RO system brands. Whether you need 1/4", 3/8", or larger diameter tubing, our products integrate perfectly with existing quick-connect fittings and push-to-connect components.
Bulk Length Options
Choose from convenient 25-foot coils for single installations or economical 100-foot and 250-foot rolls for contractors and multiple system setups. Buying in bulk reduces waste, lowers per-foot costs, and ensures you always have the right tubing on hand for repairs or new installations.
