Koch
Koch/Fluid Systems has discontinued production of the following membrane elements:
- HR Series High Rejection Low Pressure Membrane Elements
- XR Series High Rejection Thin Film Membrane Elements
- ROGA Series Chlorine Tolerant Cellulose Acetate Membrane Elements
- SW Series Seawater Membrane Elements.
These membrane elements are no longer available for sale. We are happy to offer assistance in selecting replacements from other manufacturers. Please see the details tab below for recommendations.
HR Series - High Rejection Low Pressure Thin Film Koch Membrane Elements
| Obsolete Membrane Model | Recommended Replacement | Specifications for Obsolete Models - For Reference Only | ||||||
| Size | Permeate Flow | Chloride Rejection | Membrane Area | Feed Spacer | ||||
| (Dia." x L") | GPD | m³/d | (ft²) | (m²) | ||||
| 2540HR | M-T2540A | 2.5×40 | 750 | 2.8 | 99.40 | 27 | 2.5 | 31 mil |
| 4040-HR-T | M-T4040A | 4×40 | 2,270 | 8.6 | 99.55 | 85 | 7.9 | 28 mil |
| 4040-HR | M-B4040A | 4×40 | 2,270 | 8.6 | 99.55 | 85 | 7.9 | 28 mil |
| 8040-HR-375 | FILMTEC BW30-365 | 8×40 | 10,200 | 38.6 | 99.50 | 375 | 34.8 | 31 mil |
| 8040-HR-400 | FILMTEC BW30-400 | 8×40 | 11,000 | 41.6 | 99.50 | 400 | 37.2 | 28 mil |
| 8040-HR-400-34 | FILMTEC BW30-400 | 8×40 | 11,000 | 41.6 | 99.55 | 400 | 37.2 | 34 mil |
| 8040-HR-440-28 | FILMTEC BW30HR-440 | 8×40 | 12,100 | 45.8 | 99.55 | 440 | 40.9 | 28 mil |
Test Conditions: 2,000 mg/l NaCl (700mg/l for 2.5”) solution at 225 psi (1,550 kPa) applied pressure, 15% recovery, 77°F (25°C) and pH 7.5 2540HR & 4040-HR-T are tape-wrapped elements. 4040-HR and 8” elements are fiberglass warapped.
XR Series – High Rejection Thin Film Koch Membrane Elements
| Obsolete Membrane Model | Recommended Replacement | Specifications for Obsolete Models - For Reference Only | |||||||
| Size | Permeate Flow | Chloride Rejection | Membrane Area | Feed Spacer | |||||
| Dia." x L") | GPD | m³/d | (ft²) | (m²) | mil | mm | |||
| 4040-XR | M-B4040A | 4×40 | 2,200 | 8.3 | 99.75 | 85 | 7.9 | 28 | 0.7 |
| 8040-XR-375 | FILMTEC BW30XFR-400/34i | 8×40 | 9,800 | 37.1 | 99.75 | 375 | 34.8 | 31 | 0.8 |
| 8040-XR-400 | FILMTEC BW30HR-440i | 8×40 | 10,500 | 39.7 | 99.75 | 400 | 400 | 28 | 0.7 |
Test Conditions: 2,000 mg/l NaCl solution at 325 psi (2,240 kPa) applied pressure, 15% recovery, 77°F (25°C) and pH 7.5. Fiberglass Wrapped.
ROGA Series – Chlorine Resistant High Rejection Cellulose Acetate Koch Membrane Elements
| Obsolete Membrane Model | Recommended Replacement | Specifications for Obsolete Models - For Reference Only | |||||||
| Size | Permeate Flow | Chloride Rejection | Membrane Area | Feed Spacer | |||||
| Dia." x L") | GPD | m³/d | (ft²) | (m²) | mil | mm | |||
| ROGA-4040-HR | M-CB4040AD | 4×40 | 1,700 | 6.4 | 98.0 | 80 | 7.4 | 31 | 0.8 |
| ROGA-8040-HR-325 | No Available Replacement | 8×40 | 7,100 | 26.9 | 98.0 | 325 | 30.2 | 31 | 0.8 |
Test Conditions: 2,000 mg/l NaCl solution at 420 psi (2,900 kPa) applied pressure, 15% recovery, 77°F (25°C) and pH 5.7 Fiberglass Wrapped.
SW Series – Koch Seawater RO Membrane Elements (SWRO)
| Obsolete Membrane Model | Recommended Replacement | Specifications for Obsolete Models - For Reference Only | |||||||
| Size | Permeate Flow | Chloride Rejection | Membrane Area | Feed Spacer | |||||
| Dia." x L") | GPD | m³/d | (ft²) | (m²) | mil | mm | |||
| 2540-SW | M-S2540A | 2.5×40 | 520 | 2.0 | 99.50 | 25 | 2.3 | 31 | 0.8 |
| 2540SWHF | M-S2540A | 2.5×40 | 700 | 2.6 | 99.50 | 25 | 2.3 | 31 | 0.8 |
| 4040-SW | M-S4040A | 4×40 | 1,330 | 5.0 | 99.75 | 74 | 6.9 | 31 | 0.8 |
| 8040-SW-335 | FILMTEC SW30HRLE-370/34i | 8×40 | 6,000 | 22.7 | 99.75 | 335 | 31.1 | 34 | 0.9 |
| 8040-SW-400 | FILMTEC SW30HRLE-400 | 8×40 | 7,200 | 27.2 | 99.75 | 400 | 37.2 | 28 | 0.9 |
Test Conditions: 32,800 mg/l NaCl solution (isosmotic to ASTM standard seawater) at 800 psi (5,520 kPa) applied pressure, 7% recovery, 77°F (25°C) and pH 7.5