Lasso Technik AG - Niklaus von Flue-Str.33 - CH-4059 Basel - Switzerland - Tel. +41 61 331 40 90 -


Welcome to the Stop Silent website

  The world premiere of the Lasso Technik AG

Stop Silent Light - Installed within seconds!
Reliable flood protection, air thight odor barrier, first-class flap gate.
Stop Silent Light check valves for faecal and stormwater. Suitable for backpressure until 0.5bar. Further information is available here.

  Stop Silent - trendsetting quality since 1942

Safe, Durable, Reliable
No water hammer, low pressure loss and long service life. 

The Stop Silent Check Valves feature a unique cone design that assures tight shut-off to prevent backflow of liquid or gaseous media. This design also eliminates water hammer and associated problems of noise and wear, resulting in quiet, noise-free operation and long service life.

The Stop Silent Valve series, for various applications, comes in several configurations to meet a variety of mounting requirements, allowing for easy installation into fittings, standard unions, or between flanges.


Stop Silent Light - Check Valve - record-breaking fast installation!