G'day folks, Rod from My Water Filter here today. What we're going to do is just have a look at how fast the water flows out of a reverse osmosis water filter.
Sometimes when people go for the portable model, they'll give us a call, and suggest that they were expecting a faster flow rate.
How it creates clean water
The membranes in these reverse osmosis systems, they wring the water out, and they take the contamination out of the water well. However, they create water slowly.
When you turn it on, the black hose will start to run first until there's pressure on the membrane. And once there's pressure on the membrane, the blue hose will begin to create the pure water. Concentrated chemicals and contaminants from your water supply go through the black hose.
This blue hose is just beautiful, clean, pure water. Now that's how fast the water's going to flow. We've pulled this RO-4000 to pieces until there was nothing left, and we've changed it and upgraded it the best we can.
Getting Higher Flow Rates
To achieve the highest flow rates from these filters, we use larger membranes. The RO4000 will make hundreds of litres in a day if you just leave it running. But if you're just going to intend on turning it on and off, this is the water flow that you’ll achieve.
Most commonly, or a lot of the time, people will have some containers to fill up, and they'll just put the blue hose in there, the black hose down the waste or in the bucket for the garden, and they'll just fill up your container.
A similar thing applies to a permanent system. This is the Xstream Seven-stage and has the same water flow rate. We have a tank set-up so that we can have water on demand.The system's always making water, filling the tank, and delivers the water out. It does that by the bag. There's an airbag in this tank when the water flows into the tank, it compresses the bag, the tank fills, and the filter will stop flowing. As soon as you come along and hit the faucet on the sink, it's the bag in the tank that pushes the water along the line and up out the spout.
At this rate, the tank fills, and you're looking here now, a couple of hundred millilitres a minute. But when you want to get water out of your tap, because of the tank and the bag with the permanent system, you'll have a full flow out of your kitchen into a 12-litre tank.
As soon as you run some water down in the tank, the system starts making water again, and it'll fill the tank up. So that's about it, just get your eye on there. That's the flow rate you'll have.
It does make fantastic water, no doubt about it, it's just that it will make it slowly because of the process it goes through. Thanks very much.