PureFlo reverse osmosis water filter system <300 l/hr

The PureFlo RO filter is an all-in-one water treatment system, requiring no associated pumps or tanks to operate. Three models supply up to 100, 200 or 300 litres of pure RO water per hour at a supply pressure of up to 5bar.

The system has a typical total dissolved solids rejection rate of up to 90% and a very high recovery rate, delivering up to 70% of the supply water as RO water.

As the system incorporates a pump on the inlet and another on the outlet, it can operate effectively on sites with only 1bar supply pressure and deliver product water at high pressure over long runs of pipework.

The unit has a 23 litre water tank providing a large quantity of RO water on demand and three pressure dials showing inlet water pressure, pump pressure and outgoing water pressure. These allow for easy commissioning and trouble-shooting.

A blend feature allows the quality of the product water to be adjusted so that less total dissolved solids are rejected.

A PureFlo RO filter uses water pressure to reverse a natural physical process called osmosis. Water, under pressure is forced through a semi-permeable membrane to filter out minerals and impurities.

The water into the system firstly passes through a five micron sediment filter to remove any non dissolved particles. The filtered water is then boosted to 90psi and forced through parallel semi-permeable membranes.

These membranes remove on average 90% of the total dissolved solids. These removed dissolved solids are washed away by a constant flow of water to drain.

The product water is then boosted to the required pressure by the secondary booster pump and either delivered direct to the application or is stored in the pressurised storage vessel.

By removing the minerals from a humidifier’s supply water the limescale that builds up in the system is significantly reduced. This results in a much lower level of required maintenance in all types of humidifier and reduced energy consumption in steam humidifiers. These cost savings can lead to a payback on the initial purchase of the RO (reverse osmosis) unit in under one year.

Steam humidifiers that run on mains water need to drain their boiling chambers occasionally to maintain a low mineral content and reduce internal limescale build-up. By using pure RO supply water, the steam humidifier’s boiling chamber does not require this regular drain. Therefore it uses less energy to maintain the temperature in the boiling chamber.

As the temperature within the boiling chamber is consistent, the steam output is also consistent and the humidity control improved. By using resistive steam humidifiers fed by RO water ±1%rH control can be achieved.

Other benefits of using RO water with humidifiers include increasing the life of the matrices in evaporative humidifiers and preventing dust carry-over in spray humidifiers.