CPA-4040E CPA Hydranautics Nitto 225 PSI 2,250 GPD 4 x 40 inch Membranes
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🏭 Hydranautics CPA-4040E High-Rejection RO Membrane
The Hydranautics CPA-4040E is a professional-grade 4-inch reverse osmosis element designed for applications requiring exceptionally high levels of water purity. As part of the CPA (Composite Polyamide) product line, it has become a trusted industry standard for desalting brackish water to produce high-quality permeate for municipal and industrial use. This element is specifically valued for its ability to provide consistent performance in a variety of light industrial systems, including power generation, pharmaceutical production, and semiconductor manufacturing.
Constructed with a composite polyamide polymer in a spiral-wound configuration, the CPA-4040E is engineered to deliver high rejection of Total Dissolved Solids (TDS), silica, and hardness. It features an active membrane area of 65 square feet and a 34-mil feed spacer, which enhances the element's tolerance to suspended solids and improves overall cleanability. With a nominal salt rejection of 99.5% and a permeate flow rate of 2,250 gallons per day, this membrane provides a reliable and cost-effective solution for producing ultrapure water from challenging feedwater sources.
| SPECIFICATION |
DETAILS |
| Model Number |
CPA-4040E |
| Manufacturer |
Hydranautics (Nitto) |
| Membrane Type |
Composite Polyamide |
| Element Dimensions |
4.0" Diameter x 40" Length |
| Permeate Flow Rate |
2,250 GPD (8.5 m³/d) |
| Nominal Salt Rejection |
99.5% |
| Minimum Salt Rejection |
99.2% |
| Active Surface Area |
65 ft² (6.04 m²) |
| Feed Spacer Thickness |
34 mil |
| Test Pressure |
225 psi (1.55 MPa) |
| Max Operating Pressure |
600 psig (4.14 MPa) |
| Max Operating Temp |
113°F (45°C) |
| pH Range (Continuous) |
2 – 10 |
| pH Range (Cleaning) |
1 – 12 |
