Industrial Reverse Osmosis System
Item No.: | K |

ROTEK compact commercial reverse osmosis system is a durable piece of equipment which, with proper care and maintenance will last for many years. PK series systems are part of a family of reverse osmosis units designed with pre-filtration systems on a skid frame, for operation with fresh and brackish feedwaters having TDS values below 2,000ppm. Models are available with permeate outputs of between 250 and 1000 litres/hr as shown in the specifications tables.
- 304 grade stainless steel perimeter frame with rubber isolation feet.
- Integrated microprocessor based controller with display for TDS and system status.
- Automatic membrane flush (with feed water) at start-up and every 12 hours continuous operation.
- Flow meters for permeate (treated product) and reject (waste) streams.
- Liquid filled pressure gauges for feed water pressure and membrane discharge pressure.
- Feed water inlet cartridge filter.
- Feed water inlet solenoid valve.
- Low feed water pressure sensor with automatic shutdown.
- High pressure UPVC SCH80 membrane pressure vessels.
- All pre-treatment systems are amounted in one skid frame.
- Compact Space Saving Design.
Model | PK 1500 | PK 3000 | PK 4500 | PK 6000 | |
Capacity | GPD / LPD | 1500 / 250 | 3000 / 500 | 4500 / 750 | 6000 / 1000 |
Working Pressure | PSI / BAR | 150 - 200 / 10 - 14 | |||
Raw Water Feed Pump | Injection type S.S pump + pressure tank | ||||
Sand Filter | Control Valve | Automatic Timer Control Valve | |||
Size & Capacity | 10"x54" (50L) | 10"x54" (50L) | 13"x54" (70L) | 13"x54" (70L) | |
Carbon Filter | Control Valve | Automatic Timer Control Valve | |||
Size & Capacity | 10"x54" (50L) | 10"x54" (50L) | 13"x54" (70L) | 13"x54" (70L) | |
Softener | Control Valve | Automatic Volumetric Control Valve | |||
Size & Capacity | 10"x54" (50L) | 10"x54" (50L) | 13"x54" (70L) | 13"x54" (70L) | |
Pre-Filter | Big Blue Filter Housing + PP 5um Cartridge | ||||
High Pressure Pump | Rotary Van Pump + Motor (1HP) | Multi-staged Centrifugal Pump (3HP) | |||
Membrane Housing | Stainless Steel 304 with PE end-caps | ||||
RO Membrane | 4040 x 1 | 4040 x 2 | 4040 x 3 | 4040 x 4 | |
Frame | Parts | Stainless steel main frame, rollers, brackets | |||
Size | 2170mm x 690mm x 1560mm ( L x W x H ) |
Feed Water Specifications (minimum) | |||||
Hardness | < 1 ppm | Hydrogen Sulphide | 0 ppm | Free Chlorine | 0 ppm |
Manganese | < 0.05 ppm | T.D.S. | < 2000 ppm | Organics | < 1 ppm |
Turbidity (SDI) | < 5 | Temperature | + 5 to + 40°C | pH | 3 - 11 |
Silica | < 1.0 ppm | Iron | < 0.01 ppm | Pressure | > 300 kPa |
R.O. Operating Parameters | |||||
Min. Pressure | BAR (35 PSI) | Max. Pressure | BAR (300 PSI) | Max. Hardness | 1 ppm |
Min. Salt Rejection | 96% | Max. Salt Rejection | 99% | Max. TDS | 2000 ppm |
Feed water quality, pressures and flow rates have a significant impact on the performance of any reverse osmosis system. To ensure reliable and consistent long-term performance, it is important to supply feed water having the minimum specifications detailed below. If your feed water supply is marginal, you should consider using a feed water break tank and booster pump to supply the system.