Encapsulated Replacement Reverse Osmosis Membrane with Check Valve – 1:1 Ratio
High-efficiency TLC membrane with integrated housing and check valve, delivering near 1:1 waste-to-pure water ratio for residential reverse osmosis systems
Pentair's TLC thin layer composite technology in a pre-fitted encapsulated housing
Near 1:1 Water Efficiency
Unlike traditional 4:1 ratio membranes, this GRO membrane wastes approximately one gallon for every gallon produced, reducing drain water by up to 75%
Encapsulated Design
Pre-installed in housing with quick connect fittings and integrated check valve. Drop-in replacement eliminates membrane wrapping and housing reassembly
TLC Membrane Technology
Pentair's thin layer composite membrane handles broad water chemistry ranges while maintaining consistent rejection rates across 2-5 year service life
Wide Operating Range
Functions reliably from 40-145 psi and 40-100°F, accommodating most municipal and well water pressure without booster pump requirements
Fits most conventional residential reverse osmosis systems
This 2.5" x 16" encapsulated membrane replaces standard membrane housings in residential RO systems from Pentair, GE, Whirlpool, and other manufacturers using quick connect fittings. Verify your system uses a standard 2.5" diameter membrane housing before ordering. The integrated check valve prevents backflow, eliminating the need for separate valve installation.
Replacement schedule for optimal performance
RO Membrane Replacement
Replace when production rate drops noticeably or TDS creep indicates declining rejection. Hard water and high sediment shorten lifespan toward 2-year mark
Pre-Filters (Sediment & Carbon)
Replace sediment and carbon pre-filters on schedule to protect membrane from fouling and chlorine damage. Membrane life depends on proper pre-filtration
Performance Check
Test TDS levels of product water with handheld meter. Properly functioning membrane should reject 90-97% of dissolved solids depending on source water chemistry
Lower Water Bills
1:1 efficiency ratio cuts drain water waste by 75% compared to traditional 4:1 membranes, reducing annual water and sewer costs
5-Minute Installation
Encapsulated design with pre-installed fittings and check valve means you're pushing connections together, not wrenching housings apart
Factory Tested
Every Pentair TLC membrane is performance-verified before shipment, meeting strict rejection and flow rate specifications
Eco-Conscious Choice
High-efficiency ratio reduces environmental impact of RO filtration while maintaining the contaminant rejection you expect from reverse osmosis
