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€224,70
€249,75
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HYDRA BIG DUO Rainmaster 1” - Household Water Filter

POWERFUL BIG DOUBLE filter housing with one-piece head

Innovative backwash system with spring-mounted filter cartridge. When the flush valve is opened, the cartridge is pulled down by the pressure drop, thereby cleaning the inside as well. A minimum pressure of 1.8 bar is required to ensure backflushing.

Including hose nozzle and drain funnel with backflow protection according to UNI EN 1717-11/2002

Innovative backwash system with spring-mounted filter cartridge. When the flush valve is opened, the cartridge is pulled down by the pressure drop and thus cleaned on the inside as well. A minimum pressure of 1.8 bar is required to ensure backflushing.

This filtration system treats the water at a high concentration cost-effectively and filters out contaminants as well as fine particles from the water.

This works through the self-cleaning/backwash pre-filter with 50 microns and a final water treatment by the CB CARBON cartridge.

The CTO 10 BIG 10 mcr - Activated Carbon Block consists of compressed activated carbon and filters contaminants from the water such as chlorine, organic contaminants, light hydrocarbons, solvents, pesticides, insecticides, oils and flavors, taste impairments, odor impairments, fine particles (rust, lime flakes, sand, flakes) and suspended solids.


The filter cleans the water to 10 microns.



Usage, Scope, Dimensions:

The 2-stage water treatment system is designed to be very space-saving and easy to install.

The HYDRA DUO household water filter features a drain funnel/backflow preventer to protect the drinking water supply.

The HYDRA DUO household water filter is used for the filtration and treatment of drinking water, household water, and wastewater, serving to protect fittings, pumps, water tanks, and other technical systems as well as the pipelines.


Technical Data

10" HYDRA BIG DUO Filter Housing
Dimensions: 515 x 390 x 185 mm (HxWxD)
Operating pressure: maximum 8.3 bar
Temperature range: 4 - 45 °C
Suitable for all standard 10" BIG cartridges with flat seal
Suitable for drinking water applications



The individual filtration stages:

1 x RLH 50mcr HYDRA BIG - Sediment Filter Polyester Mesh
Self-cleaning Pre-filtration Cartridge – RLH: 50 MIC
filters sand and other particles larger than 50 microns
Lifespan: approx. 12-24 months (depending on water quality and flow rate)

1 x CTO 10 BIG 10 mcr - Activated Carbon Block
filters chlorine, organic pollutants, light hydrocarbons, solvents, pesticides, oils and aromas, taste impairments, odor impairments, fine particles (rust, lime flakes, sand, flakes) and suspended solids.
Lifespan: approx. 6 months (depending on water quality and flow rate)


The filter system is originally packaged, with a filter housing, a housing key, a wall mount, screws, and three filter cartridges.