Floating suction filters

Our filters increase the operational safety of every rainwater system.

They protect the pump from sediment suction. All metal parts are made of stainless steel.

Extraction from the cleanest water layer

The float allows the suction point to rise and fall with the water level. This draws the water from the cleanest area of the cistern. Greasy and light debris collects on the surface of the water, where it regularly drains away via the overflow. Sand and heavy particles collect in the bottom sediment.

Floating intake filter

Safe function of the pump

The large surface of the floating suction filters has only a low flow resistance and thus ensures that the pump's performance can be fully developed. The rounded, hose-protecting spout with its additional bead ensures permanent function and secure hold of the hose even with frequent up and down movement.

Coarse or fine filtration?

All floating suction filters have a stabilised filter mesh made of stainless steel. You can choose between a coarse or a fine mesh size.

  • Fine filters (0.3 mm mesh size) are used for direct water extraction from open waters such as rivers, ponds or wells.
  • Coarse filters (1.2 mm mesh size) are suitable for pre-filtered water from cisterns, rainwater storage tanks and other closed containers.

The operational safety of the system is significantly increased by floating suction filters, as pump wear and the fouling of valves are considerably reduced.

With or Without Non-return valve?

All floating suction filters are optionally available with an integrated non return valve.

  • With Non return valve - for Suction pumps. The valve holds the water column in the hose, this avoids dry run of the pump
  • Without Non-return valve - for Submersible pressure pumps

The non return valve is essential for the continous and automatic operation of the suction pumps.

Floating suction filters for large systems

Floating suction filters from WISY are available for large systems with up to 2" connection.

The floating suction filters with large connection cross-section are reinforced with additional struts to withstand the volume flow of large pumps.

Intake filters for large systems

Available in a set

The connection spout of the floating suction filters is available with an optional non-return valve (=backflow preventer). When using a suction pump, it ensures that a water column always remains in the hose and does not have to build up again every time the pump is started.

Selected suction filters are also available as a set with hose and connection for the submersible pump or PE pipe.

All WISY intake filters in the overview

Fixed mounted suction filters

The fixed mounted suction filters are attached directly to the pump via a screw connection. These are available both as fine and coarse filters.

Product information

Fixed mounted suction fine filter

All intake filters have a stabilised filter mesh made of stainless steel. You can choose between a coarse or a fine mesh size.

Fine filters (0.3 mm mesh size) are used for direct water extraction from open waters such as rivers, ponds or wells.

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Info Important details

Fixed mounted suction fine filter made of stainless steel with 0.3 mm mesh size suitable for underwater pressure pumps with 1" male connection thread (without brass bend shown)

Product information

Fixed mounted suction coarse filter

Fixed mounted suction coarse filter with a mesh size of 1.2 mm. Made entirely of stainless steel and with connection threads in various sizes.

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InfoImportant details

Fixable mounted suction coarse filter made of stainless steel with 1.2 mm mesh size Suitable for underwater pressure pumps with 1 1/4" male connection thread ø = 60 mm, L = 100 mm

Floating fine suction filters

With a mesh size of 0.3 mm, floating fine suction filters are ideally suited for direct water extraction from open bodies of water such as rivers, ponds or wells.

Product information

Floating fine suction filter

The floating fine suction filter is suitable for sucking in water that has not been pre-cleaned, for example from open water or wells. The floating body allows the suction point to rise and fall with the water level. This draws the water from the cleanest area of the cistern.

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InfoImportant details

Floating fine suction filter with 0.3 mm mesh size without check valve with 1" hose connection suitable for underwater pressure pumps Floating ball ø 15 cm

Product information

Floating fine suction filter for large systems

WISY floating suction filters are available for large systems with up to 2" connection.

The floating suction filters with large connection cross-section are reinforced with additional struts to withstand the volume flow of large pumps.

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InfoImportant details

Floating fine suction filter for large systems with 0.3 mm mesh size with 1 1/2" external thread for connecting a hose nozzle with or without non-return valve (nozzle not included) Floating ball ø 22 cm

Product information

Floating intake fine filter set

The floating suction filter is suitable for sucking in water that has not been pre-cleaned, for example from open waters or wells. Floating filters from WISY are available as fine filters (0.3 mm mesh size) or as coarse filters (1.2 mm mesh size).

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InfoImportant details

with 0.3 mm mesh size with non-return valve and 1" hose connection for suction pumps with 1" nozzle Floating ball ø 15 cm PE screw connection 90° for connection to PE pipe 32 x 3mm (1") 2 m highly flexible suction hose 1" with two stainless steel clamps for attachment to suction filter and PE screw connection (1") Max. Negative pressure -0.8 bar, not suitable for overpressure

Floating coarse suction filters

With a mesh size of 1.2 mm, floating coarse suction filters are ideally suited for pre-filtered water from cisterns, rain storage tanks and other closed containers.

Product information

Floating coarse suction filter

The grommets on the floating filters are rounded to protect the hose. Even with frequent up and down movement of the floating ball in the rainwater storage tank, the hose remains permanently fully functional. The grommets also have a bead to securely fasten the hose.

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InfoImportant details

with 1.2 mm mesh without non-return valve with 1" hose connection suitable for underwater pressure pumps Floating ball ø 15 cm

Product information

Floating coarse suction filter as a set

The floating coarse suction filter is suitable for sucking in water that has not been pre-cleaned, for example from open waters or wells. The coarse filter has a mesh size of 1.2 mm.

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InfoImportant details

with 1.2 mm mesh without non-return valve with 1" hose connection for underwater pressure pumps with 1" nozzle 1 m highly flexible suction hose 1" with two moulded sockets for connection to 1" nozzle Floating ball ø 15 cm

Product information

Floating coarse suction filter for large systems

The floating suction coarse filter is suitable for sucking in water that has not been pre-cleaned, for example from open waters or wells. The coarse suction filter has a mesh size of 1.2 mm.

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InfoImportant details

with 1.2 mm mesh size for large systems without check valve with 1 1/2" hose connection suitable for underwater pressure pumps Floating ball ø 15 cm