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Backwater valves
Backwater calculator
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Wastewater Fittings
Wastewater Technology
Wastewater Valves
Flap valves
Odor valves
Odor traps
Duct backwater flaps
Pipe flaps
Backwater automats
Back pressure in pipeline
Anti-flood valves
Backflow Control Valves
Non-return valves
Foot valves
Cone check valves
Diaphragm check valves
Non-Return Valves
Non-return armatures
Check Valve
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Lasso Technik - Your specialist for non-return valves since 1942
The Stop Silent Product Line
The Stop Silent Light
Backwater flap
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For waste water up to 0.5 Bar
Easy and quick to install without structural adjustments
Always closed and active against backwater
No mechanical moving parts and no electronics for a longer lifetime
Also serves as flat check valve (against frogs) and anti-odour valve
The Stop Silent
non-return valve
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For clean media up to 16 Bar
Consists of two components only (membrane and support cone)
No moving mechanical parts, no electronics
Gentle closing, no water hammer
Low pressure drop
Low maintenance
Long-lasting
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