Fine filter bag for cistern inlet made of PP for reliable water filtration in rainwater systems

Fine filter bag for cistern inlet with robust PP filter fabric for reliable filtration

Fine filter bag for cistern inlet with a sturdy opening for secure rainwater filtration

Fine filter bag for cistern inlet with a sturdy suspension for secure mounting in the inlet area

Fine filter bag for cistern inlet made of PP in cylindrical form for reliable rainwater filtration

Fine filter bag for cistern inlet in conical form, made of PP for effective rainwater filtration

Fine Filter Bag for Cistern Inlet | WINKLER

242,00 €

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Fine Filter Bag for Cistern Inlet – Clean Rainwater, Even in Heavy Downpours

Maximum Filtration Without Clogging: The Sustainable Solution

Filtering rainwater is becoming ever more important as heavy rainfall events increase. The WINKLER fine filter bag for cistern inlets was developed specifically to reliably retain the finest particles, sediment and debris from inflow water – without restricting flow rate.

The secret lies in the material: while conventional felt filter bags often clog quickly, our special polyester composite fabric guarantees excellent filtration results with consistently high water permeability. That keeps your cistern working reliably even during heavy rain.

Your Benefits for Cisterns and Home Water Systems

A professional cistern filter protects your system long-term and improves the quality of your utility water:

Protection against sludge build-up: Retains particles down to 70 µm and prevents sediment build-up in the tank.
Longer-lasting equipment: Extends the service life of pumps, pipework and irrigation nozzles.
Better water quality: Improves the purity of rainwater for garden irrigation, household and commercial use.
High reliability: Six 25 mm wide straps running around the bag keep it securely in place even under high water loads.

You'll find further rainwater filtration solutions in our Home, Garden & Pond – Efficient Filtration for Clean Water category.

Typical Applications

Filtration for Transport & Logistics – road drainage & rainwater
Filtration for Energy & the Environment – rainwater & microplastic filtration
Filtration for Construction – filter bags for building sites & sludge dewatering
Filtration for Civil Engineering & Landscaping – sediment & water filtration
Filtration for Agriculture – water & sludge filtration

WINKLER Fine Filter Bag for Cistern Inlet: Technical Details

Material	Polyester composite fabric
Size	Variable – DN325 to DN800, or made to order
Micron rating	70 µm
Straps	6 straps running around the bag, 25 mm wide
Top edge reinforcement	80 mm
Delivery time	1–2 working days

Easy Handling and Cleaning

Installation is straightforward: simply clip the rainwater filter onto the on-site carabiner hooks. To clean it, lift the filter bag out in a few simple steps, empty it and rinse it from the outside with a garden hose. That keeps your cistern pre-filter working efficiently for years.

FAQ – Fine filter bag for the cistern inlet

Common Questions About Rainwater Filtration at the Cistern Inlet The fine filter bag removes dirt particles from rainwater before it enters the cistern. Here you'll find answers to common questions about installing, the filtration performance of, and cleaning the cistern filter.

What is a fine filter bag used for at a cistern inlet?

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A fine filter bag is fitted at the cistern inlet to remove leaves, sand and fine dirt particles from rainwater. This keeps the stored water cleaner and reduces sediment build-up in the tank.

Can the fine filter bag still let enough water through during heavy rainfall?

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Yes. The special polyester composite fabric is built to combine high water permeability with reliable filtration. Even during heavy rainfall, rainwater can keep flowing into the cistern while sediment and dirt particles are reliably retained.

How finely does the cistern filter filter rainwater?

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The fine filter bag retains particles down to around 70 µm. This reliably removes fine sediment and dirt particles, while water continues to flow unimpeded into the cistern.

Does a fine filter bag get clogged in heavy rain?

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The fine filter bag is hooked onto the existing carabiner hooks or fixing points at the cistern inlet. The straps running around the bag keep it securely in position even during high water inflow.

How often should a cistern filter bag be cleaned?

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How often it needs cleaning depends on how contaminated the rainwater is. Generally, it's enough to check the filter bag regularly and rinse it with a garden hose when needed. Regular cleaning ensures consistently strong filtration and reliable water inflow.