Designed for use with 4040 and 4021 Reverse Osmosis membranes.
- When shut this provides a set minimum waste to product ratio of about 65/35 waste/product
- Suitable for use on hard water supplies with a TDS of more than 200ppm
- Simply open to flush RO and close to produce
- Can also be left partially open if you want a higher product to waste ratio on occasions
- Replace every 500,000 litres or 2 years