Non-return valves for maximum operational reliability.Effective protection against backflow in sewage systems.

STRATE non-return valves reliably protect drainage systems against backflow from the sewer network. They ensure trouble-free operation and prevent sewage from entering sensitive parts of the system or buildings – whether in municipal, industrial or domestic applications.

Non-return valves

AWAStop & RSK non-return valves.Reliable backwater loop prevention with a well-designed construction.

The STRATE non-return valves in the AWAStop and RSK series offer proven protection against water backflow and are specifically designed for use in pressure and gravity pipelines. They are characterised by their flow-optimised geometry, robust construction and maintenance-friendly features. Depending on the medium, installation situation and operational requirements, various materials, nominal diameters and designs are available.

AWAStop is primarily used in pumping stations and pressure pipelines – for both sewage-free and sewage-containing wastewater. The compact design and reliable closing behaviour make this series particularly suitable for continuous operation under difficult conditions.

The RSK series is a classic non-return valve for universal use in pipework – even with fluctuating flow rates. It can be specifically adapted to specific operating conditions through various technical variants:

RSK-FT: A non-return valve with stepless adjustible spring loading for faster closure of the valve. This prevents the valve from flap strokes and reduces the mechanical stress on the system.
RSK-UD: Version with a bypass pipe and an integrated surge damping valve for the targeted reduction of pressure surges in the pipe.
RSK-FTUD: A combination of an stepless adjustible spring loading and a bypass line with a pressure surge damper – for maximum protection of the pumps, particularly during power cuts or sudden load changes.

With these variants, STRATE offers the right check valve solution for every requirement – reliable, durable and perfectly tailored to the specific system.

You can find 2D and 3D data for our non-return valves here.

Please refer to the STRATE product catalogue for technical details and variants.