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Home / Products / HYDRA BIG TRIO Rainmaster 1" LA - 20 inch Rainwater Filter
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HYDRA BIG TRIO Rainmaster LA 1” - 20 inch rainwater filter

HIGH-PERFORMANCE BIG TRIPLE filter housing with one-piece head

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

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.

This filtration system treats water at high volume cost-effectively and filters out pollutants and fine particles from the water.

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

The LA 20 BIG SX TS - activated carbon granulate water filter is made of compressed activated carbon and filters pollutants from the water such as chlorine, organic pollutants, light hydrocarbons, solvents, pesticides, insecticides, oils and aromas, taste impairment, odor impairment.


The filter cleans the water to 25 microns.



Use, scope, dimensions:

The 3-stage water treatment system is designed to save a lot of space and is easy to install.

The HYDRA TRIO water filter includes a drain funnel/backflow preventer, to protect the drinking water supply.

The HYDRA TRIO household water filter is used for filtering and treating rainwater, drinking water,  household water and wastewater, and serves to protect fittings, pumps, water tanks and other technical systems as well as the pipework.


Technical data

20" HYDRA BIG TRIO filter housing
Dimensions: 647 x 590 x 185 mm (HxWxD) 
Operating pressure: maximum 8.3 bar
Temperature range: 4 - 45 °C
Suitable for all standard 20" BIG cartridges with flat gasket
Suitable for drinking water applications



The individual filtration stages:

1 x RLH 90mcr HYDRA BIG - sediment filter polyester mesh
Self-cleaning pre-filtration cartridge – RLH: 90 MIC
filters sand and other particles larger than 90 microns
Service life: approx. 12-24 months (depending on water quality and flow rate)


1 x FA 20 Big SX 25 micron - sediment wound filter polypropylene

Wound filters are powerful sediment filters for removing sand, dust, rust and other particles. The exceptionally uniform wrapping of the polypropylene thread during production results in a compact cartridge with a large effective filter surface area.
Service life: approx. 6 months (depending on water quality and flow rate)


1 x LA 20 BIG SX TS - activated carbon granulate water filter
filters chlorine, org. pollutants, light hydrocarbons, solvents, pesticides, oils and aromas, taste impairment, odor impairment.
Service life: approx. 6 months (depending on water quality and flow rate)


The filtration system comes in its original packaging, with filter housing, a housing wrench, a wall bracket, screws and three filter cartridges.