 | PureFlush - How It Works from RainDance Water Systems There are two flush time settings on our light commercial and whole house TV reverse osmosis systems, one for flush at system startup and the second for flush at tank full shut down. The most important is the flush at shut down, which replaces very high TDS concentrate that resides inside the membrane when the system stops running with clean product water. The startup flush is less significant since the shut down flush leaves clean product water in the membrane, but still provides a fresh membrane upon start up, especially if the system is left to sit idle for periods of time. |
When the RO system has finished filling the storage tank and stops producing clean water, the residual water left inside the membrane vessel will have a concentrated salt content. The reverse osmosis process separates salt from the water when pressure is applied to the membrane, so when pressure is removed osmosis happens on the membrane which allows salty water to pass through the membrane. When the system starts back up it would send this salty water through the product water stream and into the clean water storage tank.
With our PureFlush feature, the system will activate a flush valve upon shutdown which lets purified water from the product storage tank into the feed of the membrane vessel. The PureFlush line is connected to the outlet water line of the storage tank delivery pump so it uses clean, pressurized water for optimum flushing. This flushing process uses a couple gallons of clean water to push out the salty water and leaves the membrane soaking in pure water during downtime. When the system starts back up again there will be pure water coming out of the membrane from this flushing. Another benefit with the PureFlush is preventing the membrane from soaking in highly mineralized water during downtime which can cause accelerated scaling of the membrane.
This PureFlush technology is just one of the premium qualities RainDance offers standard with all of our whole house & commercial reverse osmosis and nanofiltration systems. Our engineers have held to their goal of over build and over design, resulting in quality assurance in the performance and lifespan of our membrane water treatment systems.
With our PureFlush feature, the system will activate a flush valve upon shutdown which lets purified water from the product storage tank into the feed of the membrane vessel. The PureFlush line is connected to the outlet water line of the storage tank delivery pump so it uses clean, pressurized water for optimum flushing. This flushing process uses a couple gallons of clean water to push out the salty water and leaves the membrane soaking in pure water during downtime. When the system starts back up again there will be pure water coming out of the membrane from this flushing. Another benefit with the PureFlush is preventing the membrane from soaking in highly mineralized water during downtime which can cause accelerated scaling of the membrane.
This PureFlush technology is just one of the premium qualities RainDance offers standard with all of our whole house & commercial reverse osmosis and nanofiltration systems. Our engineers have held to their goal of over build and over design, resulting in quality assurance in the performance and lifespan of our membrane water treatment systems.
