Hydranautics™ CPA3 Brackish Water RO Membrane 💧🛡 Elevate your water purification system with the Hydranautics™ CPA3 (CPA3-8040) high-rejection reverse osmosis (RO) element. Designed for brackish water applications, CPA3 delivers industry-leading salt removal, robust fouling resistance, and reliable performance—perfect for commercial, light industrial, and large-scale residential systems. Technical Specifications 📊 Parameter Value Model CPA3-8040 Membrane Type Thin-film composite polyamide (TFC) Active Area 400 ft² (37.2 m²) Feed Spacer Thickness 31 mil (0.787 mm) / 34 mil (0.86 mm, LD) Rated Permeate Flow 11,000 GPD (41.6 m³/day) @ 225 psi, 1500 ppm NaCl, 77 °F Minimum Salt Rejection 99.6% @ 225 psi, 1500 ppm NaCl, 77 °F Maximum Applied Pressure 600 psig (4.16 MPa) Maximum Operating Temperature 113 °F (45 °C) pH Range (Continuous Operation) 2–10.8 pH Range (Cleaning) 1–12.5 Maximum Feedwater Turbidity 1.0 NTU Maximum Feedwater SDI (15 min) 5.0 Maximum Feed Flow 75 GPM (17 m³/h) Min. Conc./Permeate Flow Ratio 5:1 Max Pressure Drop per Element 10 psi Maximum Chlorine Concentration < 0.1 ppm (require carbon pre-treatment) Key Features 🌟 High Salt Rejection 🚰 ● Up to 99.7% NaCl removal (minimum 99.6%), ensuring exceptionally pure permeate even from challenging feedwater. Exceptional Flow Capacity 💨 ● Rated at 11,000 GPD (41.6 m³/day) under standard conditions (225 psi, 77 °F, 1500 ppm NaCl), supporting high-demand applications. Spiral-Wound Design 📏 ● 8″ × 40″ element with 400 ft² (37.2 m²) active area—maximizes throughput while minimizing footprint. Composite Polyamide Membrane 🧬 ● Engineered to resist fouling and withstand SIP (Synthetic Isopropanol) sanitization, extending service life. Thick Feed Spacer 🧵 ● 31 mil (0.787 mm) (standard) or 34 mil (0.86 mm) (CPA3-LD) spacer reduces clogging from suspended solids—ideal for brackish/variable feedwater. Wide Operating Ranges 🌡 ● Max Pressure: 600 psig (4.16 MPa) ● Max Temperature: 113 °F (45 °C) ● pH Range (Continuous): 2–10.8 ● pH Range (Cleaning): 1–12.5