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KFR valves with rising stem

"KFR" is the most colloquially used abbreviation in the sanitary sector. The abbreviation stands for combined free-flow valve with non-return check valve or for combination of free-flow valve and non-return check valve.

KFR valves can be distinguished from the outside by their test screw, which checks the non-return check valve with regard to its functional efficiency. The particularly streamlined design prevents pressure losses and noises. The valves are mainly installed at the house connection of the drinking-water installation downstream from the water meter. An arrow on the valves indicates the correct installation. They serve as a shut-off for the drinking-water pipe and prevent the backflow of the water from the house network into the water supply net. With a rising stem, the valve turns upwards when opened.

There are valves available, which additionally have a small drain tap, which is arranged in the direction of the flow and and which is responsible for emptying the pipeline.

The bonnets have a grease chamber without dead zone in the stem. They provide no room for stagnation water, germs or limestone, and are therefore considered as legionella-safe.

The handwheels are made of tough, very hard and rigid plastic.