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

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

Double-filter filter housing with one-piece head

This filtration system treats water at high capacity at low cost, reduces iron content, and filters pollutants 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, cleaning it from the inside as well. A minimum pressure of 1.8 bar is required to ensure backwashing.

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

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

The filter cleans the water to 10 micron.


Use, scope, dimensions:

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

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

It is used to filter and treat drinking water, well water, household water, dirty water, and to protect fittings, boilers, pumps, water tanks, washing machines, and other technical systems as well as the pipework.

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 (item no. 8021647070418)
Self-cleaning RLH pre-filtration cartridge with 90 MIC plastic mesh, filters sand and other particles larger than 90 micron.
Service life: approx. 12-24 months


 1 x CB - CARBON cartridge activated carbon 10 micron (item no. 4260303250106)

Filtration of fine particles (rust, limescale, sand, flakes)
Reduction of chlorine (bad taste and odor)
Pollutants (pesticides, solvents, etc.)
Service life: 6 months (depending on water quality and flow rate)


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