HYDRA Rainmaster Duo RLH CB 3/4” - Well Water Filter Home Water Filter

HYDRA RAINMASTER DUO RLH CB 3/4” - Well Water Filter House Water Filter

Double-filter housing with one-piece head

This filter system treats water in high volumes at low cost, reduces iron content, and filters out contaminants as well as fine particles from the water.

Innovative backwash system with spring-loaded filter cartridge. When the flush valve is opened, the pressure drop pulls the cartridge downward and cleans it from the inside as well. A minimum pressure of 1.8 bar is required to ensure backwashing.

Includes hose connector and drain funnel with backflow preventer according to UNI EN 1717-11/2002

This works through the Self-Cleaning/Backwash pre-filter with 90 microns, a pre-filter with 25 microns, and a final CARBON water treatment cartridge.

The filter cleans the water to 10 microns.


Use, scope, dimensions:

The 2-stage water treatment system is designed to save space and is easy to install.

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

It is used for filtering and treating drinking water, well water, household water, dirty water, and serves to protect fittings, boilers, pumps, water tanks, washing machines, and other technical systems as well as the piping.

Filter dimensions:
Height: 390 Width: 228 Depth: 107 mm

IN / OUT connection made of brass in 3/4" inch:
Maximum pressure: 8,0 bar
Minimum pressure: 1,8 bar
Maximum temperature: 45 °C


The individual filtration stages:

1 x RLH - pre-filtration cartridge (Art.-No. 8021647070418)
Self-cleaning pre-filtration cartridge RLH with 90 MIC plastic mesh, filters sand and other particles larger than 90 microns.
Lifespan: approx. 12-24 months


 1 x CB - CARBON cartridge activated carbon 10 microns (Art.-No. 4260303250106)

Filtration of fine particles (rust, limescale, sand, flakes)
Reduction of chlorine (bad taste and odor)
Contaminants (pesticides, solvents, etc.)
Lifespan: 6 months (depending on water quality and throughput)


The filter system is brand new, with filter housing, a housing wrench, a wall bracket, screws, and filter cartridges.