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| The BLS Series RO Systems are engineered to
economically produce high purity water while providing the flexibility to choose system features to meet your application
specifications. BLS systems are manufactured using the highest quality components and materials for exceptional
performance and reliable operation. |
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BLS 400
400 gpd
0.28 gpm |
BLS 800
800 gpd
0.56 gpm |
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BLS 400, 800 Features
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Energy Saving, High Flow Membrane Elements |
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Stainless Steel Membrane Pressure Vessels |
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Brass Rotary Vane Pump |
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115V, 60Hz, 1-Phase |
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Automatic Feed Water Shut-off Solenoid Valve |
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20 inch, 5 micron, Slimline Sediment Pre-filter |
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Low Inlet Pressure Protection Switch |
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System Operating Pressure Gauge |
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One Year Limited Warranty |
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Choose from three feature packages to fit your application... |
Econo Models Include
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On/Off Control |
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Fixed Reject Water Control (50% Recovery) |
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Manual Membrane Flush |
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Reject Water Recirculation Loop |
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Standard Models Include
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Mini-Trol Microprocessor Based Controller |
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Inlet and Outlet Pre-filter Gauges |
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Adjustable Reject Water Control Valve |
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Product and Reject Water Flow Meters |
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Manual Membrane Flush |
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Storage Tank Float Control Connection |
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Reject Water Recirculation Loop |
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Product Water Check Valve |
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Pre-treatment Lockout Connection |
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Optimum Models Include
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Mini-Trol WQ Microprocessor Based Controller |
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Inlet and Outlet Pre-filter Gauges |
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Adjustable Reject Water Control Valve |
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Product and Reject Water Flow Meters |
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Automatic Membrane Flush |
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Storage Tank Float Control Connection |
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Reject Water Recirculation Loop |
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Product Water Check Valve |
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Pre-treatment Lockout Connection |
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Additional Features Available
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20 inch, 10 micron, Carbon Pre-filter |
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Stainless Steel Pump |
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Stainless Steel Frame |
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Product Water Pressure Switch with Relief Valve * |
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Product Water Pressure Gauge |
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220V, 50Hz, 1-Phase |
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High Rejection Membrane Elements |
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Nanofiltration Membrane Elements |
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NOTE: When ordering a BLS Series RO System, the customer must choose between a product
water pressure switch (for water storage in a pressurized tank) or a water level float kit (for water storage
in an atmospheric tank). See below. |
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CLICK TO VIEW BLS 400, 800 PARTS LIST |
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| OPERATING SPECIFICATIONS |
BLS 400 |
BLS 800 |
| Flow Capacity, Gallons Per Day* |
400 GPD |
800 GPD |
| Flow Capacity, Gallons Per Minute* |
0.28 GPM |
0.56 GPM |
| Flow Capacity, Liters Per Day* |
1,514 LPD |
3,028 LPD |
| Flow Capacity, Liters Per Minute* |
1.05 LPM |
2.10 LPM |
| Typical Recovery |
50% |
50% |
| Design Rejection Rate |
95 to 99% |
95 to 99% |
| Typical Operating Pressure |
165 PSI (11.3 Bar) |
165 PSI (11.3 Bar) |
| Nominal Feed Water Flow Rate During Operation |
0.56 GPM (2.12 LPM) |
1.12 GPM (4.24 LPM) |
| Nominal Feed Water Flow Rate During System Flush |
2.10 GPM (7.95 LPM) |
2.10 GPM (7.95 LPM) |
| Maximum Product Water Back Pressure |
50 PSI (3.4 Bar) |
50 PSI (3.4 Bar) |
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| FEED WATER PARAMETERS |
BLS 400 |
BLS 800 |
| Temperature Range, ºF |
40 to 90ºF |
40 to 90ºF |
| Temperature Range, ºC |
5 to 30ºC |
5 to 30ºC |
| Minimum Pressure |
20 PSI (1.3 Bar) |
20 PSI (1.3 Bar) |
| Maximum Pressure |
85 PSI (5.8 Bar) |
85 PSI (5.8 Bar) |
| Maximum TDS |
2,000 PPM |
2,000 PPM |
| Maximum Chlorine Tolerance |
0.1 PPM |
0.1 PPM |
| Maximum Hardness |
10 GPG (171 PPM) |
10 GPG (171 PPM) |
| Maximum Iron, Dissolved |
0.5 PPM |
0.5 PPM |
| Maximum Oil Tolerance |
Must Be Removed |
Must Be Removed |
| Maximum Silt Index |
5 |
5 |
| Maximum Turbidity |
1 NTU |
1 NTU |
| pH Range |
3 to 10 |
3 to 10 |
| Minimum Pre-Filtration |
5 Micron |
5 Micron |
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| DESIGN SPECIFICATIONS |
BLS 400 |
BLS 800 |
| Dimensions, Inches (D x W x H) |
14 x 17 x 35 |
14 x 17 x 35 |
| Weight, Lbs. |
80 Lbs. |
90 Lbs. |
| Feed Water Inlet Connection |
3/8" FPT |
3/8" FPT |
| Reject Water to Drain Connection |
3/8" Tube |
3/8" Tube |
| Product Water to Storage Connection |
3/8" Tube |
3/8" Tube |
| Filter Housing, Inches |
20" SlimLine |
20" SlimLine |
| Membrane Housings, Inches |
(1) 2.5 x 21 S.S. |
(1) 2.5 x 21 S.S. |
| Membranes Elements, Inches |
(1) 2.5 x 21 XLE |
(2) 2.5 x 21 XLE |
| Pump, 60 Hz |
Rotary Vane |
Rotary Vane |
| Pump, 50 Hz |
Rotary Vane |
Rotary Vane |
| Motor, 60 Hz |
1/3 HP, 1-Phase |
1/3 HP, 1-Phase |
| Motor, 50 Hz |
1/3 HP, 1-Phase |
1/3 HP, 1-Phase |
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| * Based on feed
water with 500 mg/L of NaCl and temperature of 77ºF (25ºC). |
| System production may vary depending
upon incoming water temperature and chemistry. |
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NOTE: If the RO system is used with chlorinated water, a carbon pre-filter is required. BLS
systems are designed for use on potable water sources only. |
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| Low Feed Water Pressure Switch |
System shuts down at 15 PSI (1.0 Bar)
decreasing pressure |
| Product Water Pressure Switch |
System shuts down at 45 PSI (3.1 Bar)
and starts at 25 PSI (1.7 Bar) |
| Max. System Operating Pressure |
175 PSI (12.1 Bar) |
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