CPA7 MAX CPA Hydranautics Membranes
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🏢 Hydranautics CPA7 MAX Ultra-High Rejection RO Membrane
The Hydranautics CPA7 MAX is a premier 8-inch brackish water reverse osmosis element designed for applications requiring the absolute highest levels of permeate purity. As the newest flagship in the CPA (Composite Polyamide) line, it delivers a record-breaking nominal salt rejection of 99.8%, making it an industry standard for critical high-purity systems. This membrane is specifically engineered to treat difficult feedwater while maintaining a superior rejection of TOC, boron, silica, and nitrates—contaminants that are often challenging for standard RO elements to remove.
The "MAX" designation refers to its increased active membrane surface area of 440 square feet, which is significantly higher than standard 8-inch elements. This high packing density allows system designers to reduce capital costs by requiring fewer pressure vessels and a smaller physical footprint to achieve the same total permeate output. With its combination of ultra-high rejection and high flow capacity, the CPA7 MAX is the preferred choice for power generation boiler makeup, semiconductor manufacturing, and pharmaceutical ultrapure water production.
| SPECIFICATION |
DETAILS |
| Model Number |
CPA7 MAX |
| Manufacturer |
Hydranautics (Nitto) |
| Membrane Type |
Composite Polyamide |
| Element Dimensions |
8.0" Diameter x 40" Length |
| Nominal Permeate Flow |
12,600 GPD (47.7 m3/d) |
| Nominal Salt Rejection |
99.8% |
| Minimum Salt Rejection |
99.7% |
| Active Surface Area |
440 ft2 (40.9 m2) |
| Feed Spacer Thickness |
28 mil |
| Test Pressure |
225 psi (1.55 MPa) |
| Max Operating Pressure |
600 psi (4.14 MPa) |
| Max Operating Temp |
113∘F (45∘C) |
| pH Range (Continuous) |
2 – 11 |
| pH Range (Cleaning) |
1 – 13 |
