Shark Bead 25

The Shark Bead is a filter that combines both mechanical filtration and biological purification: this pressure filter is used in bathing basin, Koi basin or pleasure pond.

This type of filter is intended for installations in gravity mode, with grid prefilter or drum filter only. It is possible to do without prefilter provided that the size of the filter is oversized, to carry out its daily washing (in season) and to limit the volume of the basin to 20 m3.

How does this filter work?

In normal operation, small polypropylene elements (beads - area of 1300 m2 / m3) agglomerate in the upper part of the filter. This thick mattress of beads floats and forms a barrier that retains particles from the pond water.

The pump therefore discharges water from the bottom to the top of the filter: water can rise slowly evenly through the beads that act as bacterial supports.

A classic installation of a gravity filtration with bead filter. The water is evacuated from the basin to the pre-filter via a bottom drain and a skimmer. The pump draws water into the prefilter for discharging into the bead filter. Optionally, a centrifugal filter can be fitted downstream of the prefilter.

In the filtration mode (right-hand diagram), the water enters the filter through the bottom screen (A), ascends into the filter, and passes through the floating bead mat (B). The water comes out of the filter from the top via the strainer (C) which holds the beads. All particles light enough to be carried away by the water flow are trapped in the bead mattress. The heavier particles are deposited at the bottom of the filter.

A multi-way valve allows washing, rinsing, filtration, recirculation, etc. Washing consists in circulating the water in the filter but in the opposite direction (backwashing) and by stirring the beads. A blower (high volume air compressor) allows very aggressive agitation of the beads by injecting air into the filter.

Advantages

The surface needed to install this filter is reduced: it offers maximum performance for a small footprint.

It can be positioned below the water level: often very practical!

The cleaning operation is simple and fast: and no need to get your hands dirty!

Which water pump?

A basin being filtered in 2 hours, a pump is required whose flow is equal to at least half the volume of the basin.

Example: for a basin of 30 m3, it is necessary for the pump to pump at least 15 m3 / h at a pressure of 0.5 to 0.8 bar, taking into account the losses in loads. To obtain a correct rinsing of the filter, a pump which delivers a pressure of at least 1 bar is required.

It is possible to use a less powerful pump which can operate in filtration mode: and use the more powerful pump to rinse the filter.

Characteristics

Transport

The transport price of this item cannot be reasonably calculated in advance due to the numerous variables: location, weight, volume, ordering of additional items, possible discount, etc.

Rather than applying a package which is often very penalizing, we prefer to calculate the price on a case-by-case basis.

The price of the port is decreasing: the more you load the value on your pallet, the more you give us the means to lower the price of the port (or even to make it free).

A price offer follows your order: you have the choice of accepting or refusing.

If in the meantime, a payment has been made, reimbursement will take place as soon as your cancellation email.

You can also consult us before placing an order.