Schlösser is one of the leading Polish manufacturers of heating accessories. Our flagship products are: thermostatic heads and thermostatic valves for many types of radiators, offered in various colours and textures. Schlösser heating accessories are a perfect choice for everyone willing to make their radiators original and energy efficient as well. more

Cassette temperature limiter RTL with MINI RTL head

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Cassette temperature limiter RTL with MINI RTL head

Used for heating medium temperature limiting in an underfloor heating system pipe. The system should not exceed the area of 20 m², total heating pipe loop length of 100 m and inner pipe diameter of 12 mm.

The loop of the underfloor heating system can be connected to the central heating system that meets 70/55°C specifications and by means of an over-temperature protection the heating medium must not exceed the temperature of 50°C. Thanks to using a temperature limiter there is no need for installing a mixing valve and an extra circulation pump. Used in combined systems of underfloor and radiator heating.

Thermostatic valve incorporates two connection ends with external G ¾ connection thread compatible with Schlosser 6025 00001 Cu 15x1 and 6026 00001 16x2 PEX compression connectors. Heating medium temperature setting range from 10 to 50°C.


Nominal pressure 1MPa
Heating medium water
Test pressure 1,5 Mpa
Operating temperature 90°C

Scale 0 10 20 30 40 50
Temperature shut-off 10°C 20°C 30°C 40°C 50°C

G ¾
Rectangular cassette
Product available in white and chrome version