| AVRO Reverse Osmosis Membrane Element Range |
| Element specifications from AVRO Projection Software (metric units). Performance figures are at the stated standard test conditions; individual element flow may vary ±20%. Elements grouped by diameter, smallest first. Operating limits per manufacturer datasheets. |
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Model |
Series |
Suggested feed water |
Element size |
Active area |
Feed spacer |
Permeate flow |
Stabilised rejection |
Test solution |
Test pressure |
Test recovery |
Suggested max feed TDS |
Quick stock |
| |
|
|
|
m² |
mil |
m³/d |
% |
mg/L NaCl |
bar |
% |
mg/L |
|
| 2.5-inch elements (2540 and 2521) |
| AVRO-ULP-2521 |
ULP |
Low to medium salinity brackish feed |
2521 |
1.3 |
28 |
1.5 |
99.20 |
1500 |
10.34 |
8 |
< 2,000 |
|
| AVRO-ULP-2540 |
ULP |
Low to medium salinity brackish feed |
2540 |
2.5 |
28 |
2.8 |
99.20 |
1500 |
10.34 |
15 |
< 2,000 |
★ Yes |
| 4-inch elements (4040 and 4021) |
| AVRO-XLP-4021 |
XLP |
Low-salinity feed: surface, ground or municipal water |
4021 |
3.3 |
28 |
4.4 |
99.00 |
500 |
6.89 |
8 |
< 1,000 |
|
| AVRO-XLP-4040 |
XLP |
Low-salinity feed: surface, ground or municipal water |
4040 |
8.4 |
28 |
9.8 |
99.20 |
500 |
6.89 |
15 |
< 1,000 |
|
| AVRO-XLP-4040HF |
XLP |
Low-salinity feed: surface, ground or municipal water |
4040 |
9.3 |
28 |
13.2 |
99.00 |
500 |
6.89 |
15 |
< 1,000 |
|
| AVRO-ULP-4021 |
ULP |
Low to medium salinity brackish feed |
4021 |
3.3 |
28 |
3.6 |
99.20 |
1500 |
10.34 |
8 |
< 2,000 |
★ Yes |
| AVRO-ULP-4040 |
ULP |
Low to medium salinity brackish feed |
4040 |
7.9 |
28 |
9.8 |
99.35 |
1500 |
10.34 |
15 |
< 2,000 |
|
| AVRO-ULP-4040-2 |
ULP |
Low to medium salinity brackish feed |
4040 |
7.9 |
34 |
8.3 |
99.50 |
1500 |
10.34 |
15 |
< 2,000 |
|
| AVRO-ULP-4040HF |
ULP |
Low to medium salinity brackish feed |
4040 |
9.3 |
28 |
10.2 |
99.50 |
1500 |
10.34 |
15 |
< 2,000 |
★ Yes |
| AVRO-ULP-4040MR-2 |
ULP |
Low to medium salinity brackish feed |
4040 |
9.3 |
28 |
9.1 |
99.60 |
1500 |
10.34 |
15 |
< 2,000 |
|
| AVRO-ES-4040UFR |
ES |
Fouling-prone brackish feed: wastewater, surface, groundwater |
4040 |
7.9 |
34 |
8.3 |
99.60 |
2000 |
10.34 |
15 |
< 2,000 |
|
| AVRO-BW-4021 |
BW |
General brackish feed: bore, surface, tap, treated water |
4021 |
3.3 |
28 |
3.6 |
99.50 |
2000 |
15.51 |
8 |
< 5,000 |
|
| AVRO-BW-4040 |
BW |
General brackish feed: bore, surface, tap, treated water |
4040 |
7.9 |
28 |
9.5 |
99.60 |
2000 |
15.51 |
15 |
< 5,000 |
★ Yes |
| AVRO-BW-4040-E |
BW |
General brackish feed: bore, surface, tap, treated water |
4040 |
7.9 |
28 |
9.1 |
99.50 |
2000 |
15.51 |
15 |
< 5,000 |
|
| AVRO-BW-4040HF |
BW |
General brackish feed: bore, surface, tap, treated water |
4040 |
9.3 |
28 |
11.0 |
99.50 |
2000 |
15.51 |
15 |
< 5,000 |
|
| AVRO-BW-4040FR |
FR |
High-fouling or high-TDS feed: reclaimed water, wastewater, RO concentrate |
4040 |
7.3 |
34 |
7.6 |
99.60 |
2000 |
15.51 |
15 |
< 10,000 |
|
| AVRO-BW-4040XLFR |
FR |
High-fouling or high-TDS feed: reclaimed water, wastewater, RO concentrate |
4040 |
7.9 |
34 |
8.7 |
99.60 |
2000 |
15.51 |
15 |
< 10,000 |
|
| 8-inch elements (8040) |
| AVRO-XLP-8040 |
XLP |
Low-salinity feed: surface, ground or municipal water |
8040 |
40.9 |
28 |
41.6 |
99.20 |
500 |
6.89 |
15 |
< 1,000 |
|
| AVRO-XLP-8040HF |
XLP |
Low-salinity feed: surface, ground or municipal water |
8040 |
40.9 |
28 |
49.2 |
99.00 |
500 |
6.89 |
15 |
< 1,000 |
|
| AVRO-ULP-8040 |
ULP |
Low to medium salinity brackish feed |
8040 |
37.2 |
28 |
41.6 |
99.35 |
1500 |
10.34 |
15 |
< 2,000 |
|
| AVRO-ULP-8040-2 |
ULP |
Low to medium salinity brackish feed |
8040 |
37.2 |
34 |
37.8 |
99.50 |
1500 |
10.34 |
15 |
< 2,000 |
|
| AVRO-ULP-8040HF |
ULP |
Low to medium salinity brackish feed |
8040 |
40.9 |
28 |
47.3 |
99.50 |
1500 |
10.34 |
15 |
< 2,000 |
|
| AVRO-ULP-8040MR-2 |
ULP |
Low to medium salinity brackish feed |
8040 |
40.9 |
28 |
39.7 |
99.60 |
1500 |
10.34 |
15 |
< 2,000 |
|
| AVRO-ES-8040UFR |
ES |
Fouling-prone brackish feed: wastewater, surface, groundwater |
8040 |
37.2 |
34 |
39.7 |
99.60 |
2000 |
10.34 |
15 |
< 2,000 |
|
| AVRO-BW-8040 |
BW |
General brackish feed: bore, surface, tap, treated water |
8040 |
37.2 |
28 |
39.7 |
99.70 |
2000 |
15.51 |
15 |
< 5,000 |
|
| AVRO-BW-8040-E |
BW |
General brackish feed: bore, surface, tap, treated water |
8040 |
37.2 |
28 |
39.7 |
99.55 |
2000 |
15.51 |
15 |
< 5,000 |
|
| AVRO-BW-8040HF |
BW |
General brackish feed: bore, surface, tap, treated water |
8040 |
40.9 |
28 |
49.2 |
99.55 |
2000 |
15.51 |
15 |
< 5,000 |
|
| AVRO-BW-8040FR |
FR |
High-fouling or high-TDS feed: reclaimed water, wastewater, RO concentrate |
8040 |
33.9 |
34 |
35.9 |
99.70 |
2000 |
15.51 |
15 |
< 10,000 |
|
| AVRO-BW-8040FR-2 |
FR |
High-fouling or high-TDS feed: reclaimed water, wastewater, RO concentrate |
8040 |
37.2 |
34 |
39.7 |
99.70 |
2000 |
15.51 |
15 |
< 10,000 |
|
| AVRO-BW-8040LFR |
FR |
High-fouling or high-TDS feed: reclaimed water, wastewater, RO concentrate |
8040 |
37.2 |
34 |
39.7 |
99.75 |
2000 |
15.51 |
15 |
< 10,000 |
|
| AVRO-BW-8040XLFR |
FR |
High-fouling or high-TDS feed: reclaimed water, wastewater, RO concentrate |
8040 |
37.2 |
34 |
43.5 |
99.75 |
2000 |
15.51 |
15 |
< 10,000 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Common operating limits (all series) |
| • Maximum operating pressure: 41.4 bar (mechanical limit, distinct from the per-element test pressure above) |
| • Maximum feed water temperature: 45 °C |
| • Maximum feed flow: 17.0 m³/h (8-inch), 3.6 m³/h (4-inch) |
| • Maximum feed SDI15: 5.0 |
| • Free chlorine tolerance: < 0.1 mg/L (dechlorinate feed) |
| • pH range — continuous operation: 3–10 (2–11 for ES and FR series) |
| • pH range — chemical cleaning: 1–13 |
| • Maximum pressure drop per element: 1.0 bar |
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Source: AVRO Projection Software membrane database (manufacturer product manual, 2026). Quick-stock items (★) have the shortest 4-inch lead times. |
