SUEZ AG4021TF; 4" X 21" 1050 GPD TFC Replacement Reverse Osmosis Membrane for Tap/Brackish Water

SUEZ AG4021TF; 4" X 21" 1050 GPD TFC Replacement Reverse Osmosis Membrane for Tap/Brackish Water

SKU: 1206750
  • $279.99
    Unit price per 


The A-Series, family of proprietary thin-film reverse osmosis membrane elements are characterized by high flux and excellent sodium chloride rejection. AG High Rejection Brackish Water Elements are selected when high rejection and operating pressures as low as 200 psig (1,379 kPa) are desired. These elements allow moderate energy savings, and are considered a standard in the industry. AG4021TF High Rejection Brackish Water elements feature a tape outer wrap and 28 mil feed spacers. This element is designed with male end connections.

Element Specifications

Model Flow Active Area Avg. Rejection Min. Rejection Part Number
AG4021TF 1,050 GPD 42 ft2 99.5% 99% 1206750
Specifications are based on a 2000 mg/L NaCl solution at 225 psig operating pressure (1551 kPa), 77°F (25°C), 15% recovery, pH 7.5 after 24 hours. Individual flux may vary +25%/ -15%.

Operating and Design Parameters

Membrane: Thin Film Membrane (TFM®)
Typical Operating Pressure: 200 psig
Maximum Pressure: 450 psig
Maximum Temperature: 122°F
Chlorine Tolerance: 1,000 ppm-hrs, dechlorination recommended
Optimum Rejection pH: 7.0 -7.5
Operating pH Range: 4.0 - 11.0
Cleaning pH Range: 2.0 - 11.5
Maximum Pressure Drop: 6 psig (41 kPa) per element
36 psig (248 kPa) per vessel
Feed NTU: <1
Feed SDI: <3
Typical Operating Flux: 10-20 GFD (15-35) L.H-1.M-2