Why does a company with a name referring to rope (lasso) sell check valves?

Lasso Technik AGwas founded by Albert Schüle in Switzerland in 1942. The main reason for this was the shortage of wood during the Second World War and the realization that there were large quantities of wood in the mountains in impassable terrain. Lasso Technik AG developed its ropeway system as a solution to this problem.

As Mr. Schüle was originally a plumbing engineer and had previously dealt in backflow preventers and non-return valves, he took this trade into his new company as a second mainstay. As valve technology was not yet very advanced at that time, Lasso Technik AG began to develop its own valves for industry and private households. This gave rise to the Stop Silent® product range.

After several new developments and optimizations of the Stop Silent®check valve, Lasso Technik AG recognized the potential of its product in the wastewater sector. In collaboration with Lucerne University of Applied Sciences and Arts, it then developed an innovative product for backflow protection.

The result was theStop Silent® SL13 backwater valve in 2013, which eliminates many of the weaknesses of conventional electrical or mechanical backwater valves. It also solves additional problems, such as the unpleasant smell from the sewer system in the house or the ingress of amphibians into pipes. Since 2013, many customers and installation companies have sworn by the SL13 as a reliable solution against backwater or odor nuisance.

Stop Silent SL13 Backwater Valves as Frog Flap or Amphibian Flap - Brochure