About us
The family business Lasso Technik AG was founded in Switzerland in 1942 by Albert Schüle and is now managed by the third generation.
The traditional Swiss company stands for high-quality products that inspire architects, construction companies, plumbers and even local authorities.
In particular, the patented Stop Silent® non-return valve type AS, a brilliant invention by Albert Schüle, which we have developed further over the years in line with changing standards.
The company is headquartered in Basel, Switzerland. Our team consists of a mixture of different generations, countries and professional groups. This enables us to provide differentiated perspectives for the professional advice of our customers and the further development of our products.
The traditional Swiss company stands for high-quality products that inspire architects, construction companies, plumbers and even local authorities.
In particular, the patented Stop Silent® non-return valve type AS, a brilliant invention by Albert Schüle, which we have developed further over the years in line with changing standards.
The company is headquartered in Basel, Switzerland. Our team consists of a mixture of different generations, countries and professional groups. This enables us to provide differentiated perspectives for the professional advice of our customers and the further development of our products.
Lasso Technik - Your specialist for non-return valves since 1942
Our history
Why does a company with a name referring to rope (lasso) sell check valves?
Lasso Technik AG was 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.
Development of the AS cone valve
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 the Lucerne University of Applied Sciences and Arts, it then developed an innovative product for backflow protection.
Creation of Stop Silent SL13
In 2013, the Stop Silent® SL13 backwater flap was created, which eliminates many of the weaknesses of conventional electrical or mechanical backwater flaps. 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.
Development of the AS cone valve
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 the Lucerne University of Applied Sciences and Arts, it then developed an innovative product for backflow protection.
Creation of Stop Silent SL13
In 2013, the Stop Silent® SL13 backwater flap was created, which eliminates many of the weaknesses of conventional electrical or mechanical backwater flaps. 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.
The Stop Silent® SL13 backflow flap at a glance.
- The Stop Silent® SL13 backflow preventer was specially developed for wastewater house connections containing faeces.
- Seals reliably even with oval pipes.
For DN150mm - ovality up to 20mm possible 140mm/160mm - No structural adjustments necessary:
measure - order - insert into pipe - tighten - done! - Autonomous - works without electricity - Lightning-proof
Ready for use against backflow immediately after installation - No moving mechanical parts - low maintenance Low maintenance means: maintenance every 6 - 12 months
Only the rubber membrane is in motion - practically no wear and tear - Ideal retrofit kit, e.g. for conversions or old buildings
The fast and reliable solution - Long-lasting, the first SL13 has still been in use since 2013
This backflow flap reliably protects the building from backwater every 20 minutes.
Applications
Stop Silent® SL13 - a multifunctional system in one:
- a backflow flap
in the wastewater against backwater from the sewer system
Protection against flooding - property drainage, open waters (rivers and lakes)
Drainage of railroad lines - a frog flap & amphibian flap
Outlet into nature
Can be used as an amphibian and insect barrier, e.g. in water reservoirs - An odor barrier
Odor stop for the house, protection against unpleasant odors from the pipes.
Prevents sewer gases from rising via the rainwater pipe to the roof terrace - A noise-insulating flap
Suppresses the noise of water flows from the pipes
Please note that our backflow flap is not a rat guard - special systems are available for rat infestations
Lasso Technik - Your specialist for non-return valves since 1942
Mr Daniel Rohrer
CEO - Lasso Technik
CEO - Lasso Technik
Interested? Please contact us!