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Lasso-TechnikModel Stop Silent SL13 -Backwater Valves

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The Stop Silent SL13 backflow preventer was specially developed for wastewater house connections containing faeces. It can be installed in just a few seconds, even in oval pipes, and offers reliable backflow protection and a long service life.

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No structural adjustments
Quick and easy installation
No moving parts
Autonomous, fail-safe
No wear and tear
Durable
Stop Silent® SL13 - a multifunctional system in one
  • a backflow flap
  • a frog flap & amphibian flap
  • an odor barrier
  • a noise-reducing flap
Perfect fit
-> Also fits into the oval tube

Inline check-valve for waste water applications
The Stop Silent® SL13 (formerly Light) backflow preventer is the reliable backflow protection for use in wastewater technology. This airtight flap is designed, for example, for sewage and rainwater with a back pressure of up to 0.5 bar. The high-quality backflow protection is also ideal as a frog flap for quick and easy installation in private and industrial wastewater applications. Furthermore, the backflow preventer for sewage pipes is characterized by quick and force-fit clamping inside the pipe.