DuPont FilmTec TW30-4021 Tap Water RO Membrane | 4"

DuPont FilmTec TW30-4021 4" Tap Water Reverse Osmosis Membrane

The TW30-4021 is a 4" × 21" DuPont FilmTec tap water RO membrane designed for commercial and light industrial systems. It delivers 900 GPD at 99.5% stabilized salt rejection and is suited for low-salinity applications where consistent performance and compact size are needed.

Technical Specifications

• Permeate Flow: 900 GPD (3.4 m³/day)
• Stabilized Salt Rejection: 99.5%
• Element Size: 4" diameter × 21" length
• Membrane Type: Thin-Film Composite (TFC)
• Active Area: ~36 ft²
• Maximum Operating Pressure: 600 psi
• Designed For: Tap water and low-salinity applications

Key Features

• 900 GPD permeate flow
• 99.5% stabilized salt rejection
• Compact 4" × 21" size
• Thin-film composite construction
• Suitable for tap water and low-TDS feed

Applications

• Commercial RO systems
• Food & beverage
• Light industrial process water
• Small commercial or institutional systems

At KnappRO Chicago we stock genuine DuPont FilmTec membranes with fast shipping from our U.S. warehouse. Need help choosing the right membrane? Contact our team for expert guidance.

Download TW30 4021 Datasheet