The Midi Sieve operates in gravity mode.
The water is routed through the 110 mm pipe from the basin to the pre-filter.
The amount of water entering the prefilter is regulated by a float device.
When the water level rises in the prefilter, the float rises and acts on a lever, allowing less water to pass through.
An equilibrium is obtained between the water which enters the pre-filter and that which is pumped, which maintains a constant water level under the grid in the pre-filter.
Water that falls through the stainless steel grate is freed from dirt with a size greater than 0.3 mm.
The water can then be directed to the biological filtration by a pump that sucks up the water held underneath the grid.
Applications
As a pre-filter, upstream of a multi-chamber or run-off filter.
As a pre-filter, upstream of a bead filter.
Suitable for a small pond in gravity mode.
SuperSieve pre-filter cover, models to choose from: Supersieve Medium / Large OR SuperSieve XL