PERFECT WATER PRESSURE FOR RO
The majority of reverse osmosis membranes are intended to perform with water pressures of 60 PSI or greater, and they are tested to have a steady rejection rate of at least 97.5%. If the water pressure used to feed a RO system is lower than that, the system will generate less water of lower quality. Additionally, when the water temperature falls below 77 degrees Fahrenheit, production is diminished. Pressurized storage tanks and pump systems with 20/40 psi or 30/50 psi on/off pressure settings are most typical in private well systems. In such circumstances, an electric pressure boosting pump must be installed to ensure that certain health-related pollutants in the feedwater, such as nitrate or arsenic, are adequately rejected.
LOW INLET PRESSURE
Small residential RO systems can theoretically operate at very low pressure (down to 35psi, according to certain membrane manufacturers), but the reality is that you won't obtain much water and the product water quality will be reduced if the RO unit operates below 45psi. The unit produces more rejected water, less drinking water, fills the storage tank more slowly, and produces lower quality water when the inlet pressure is low.
The low-pressure switch is usually used to protect the pump from low pressure situations, such as when the feed water supply is cut off. It would be between the pump and the water pipe or tap. If water stops flowing from the main supply system or if the pressure is too low for the RO to function, it will turn off the pump. The low-pressure switch is typically set at 0.25Mpa to turn on the booster pump and 0.1Mpa to turn it off.
HIGH INLET PRESSURE
The high-pressure switch is used in either a pressure tank-equipped system or an open tank system with a float valve to cut the pump off when a specific pressure is achieved. This would be as close to the pressure tank or float valve as practical. It prevents the system's maximum pressure from being reached and the pump from running continually in this case.
When the water pressure tank is full, the High Pressure Switch turns off the system and is activated when there is insufficient pressure or water (pressure down 0.06Mpa). 0.25Mpa, 0.03Mpa is the standard pressure setting for High Pressure Switches (about 40Psi).
Permeate pumps use the energy of the reverse osmosis system's drain water flow to push filtered water into the holding tank. Existing RO systems can readily be upgraded with permeate pumps.
BENEFIT OF GOOD STRONG INLET PRESSURE
-RO units will create a good quantity and good quality water with a good strong inlet pressure, while also sending less water to the drain.
-Ro units will generate less water, have poorer quality, and discharge more water down the drain if the water pressure is too low (less than 40psi/3kg).
As a result, all NETSOL Water Reverse Osmosis Systems come with a pre-pressure gauge, pre-installed after the sediment prefilter and before the green carbon block prefilter, and always before the membrane.
If the pressure gauge drops below the minimum requirement (40psi/3kg) after installing the RO unit, the user should install a NETSOL RO Pressure Pump Kit to get the best results in terms of water quantity and quality. This pump kit will increase the pressure in your incoming water by 40psi/3kg. Pressure should be higher than your current inlet pressure.