The cheapest Backwashing Valve products can be activated by line pressure or an external pressure source. According to the pressure of the water outlet pipe, if the pressure is not enough to support backwashing, an electric solenoid valve will be installed in the water outlet pipe of the cheapest Backwashing Valve to control the water flow to meet the flushing requirements.

The Backwash Valve can realize programmable control by adding a solenoid valve, and flush the sewage regularly. The cheapest Backwashing Valve products have a total of two working modes, which can be switched according to the working conditions of the filtration system and system settings. Let's take a look at the two working modes of the cheapest Backwashing Valve products, the filter mode and the backwash filter mode.
The filter mode of the Backwashing Valve products are to allow the impurity-laden water to flow directly through the water outlet to the filter. The backwash mode of the cheapest Backwashing Valve products are to disconnect the passage between the water ports, open the sewage outlet, and wash the filter to remove impurities.