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F3240 automatic filter

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Quick Overview

Automatic screen filters F3240 are available with 25 to 450 mch flow-rates, connections from 2’’ to 10’’, with different filtration levels. The fully autonomous operation allows its installation even in remote areas lacking electricity. The automatic washing of the screen is achieved through a small quantity of water collected from the main flow avoiding the total interruption of the system flow.

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How it works

Water enters a pre-filtration chamber retaining the bigger particles bodies that could block the operation mechanism. Then it flows through the special thin stainless steel filtration screen retaining dirty. The accumulation of substances on the screen surface generates an inlet-outlet pressure difference. When such difference reaches the set point (adjustable from 0.2 to 07 bar) the control unit activates the discharge valve. This is when the flushing starts. The flux of discharge water generates the helical rotation of the rotor arm where the suction nozzles are installed. The special configuration of the rotor arm ensures that the whole filtering area is perfectly cleaned by the suction nozzles. At the end of the cycle (lasting 10/20 seconds), the discharge valve goes back to the closing position and the rotor arm to its initial position, ready for the following flushing process.

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