Pneumatic multi-size flow-stop bags
Städtler + Beck manual pneumatic multi-dimensional flow-stop bags are used to stop the flow of medium in pipelines from DN 50 to DN 650.
They consist of a ball (single ball) or two balls (double balls) made of a special rubber compound connected to a hose (flexible or metal) with a conical rubber plug at the end, a ball valve and a pressure gauge (or several ball valves and pressure gauges depending on the type and configuration of the shut-off ball).
The flow-stop bags are designed for several pipeline diameters (multi-dimensional bags).
Compared to conventional bags for testing and stopping flow in a pipeline, MDA 1 bar gas bags offer a number of significant advantages:
SPECIAL ADVANTAGES
Excellent gas seal due to special rubber compound.
Absolute adhesion to the pipe, ensuring reliable sealing.
High flexibility and bendability due to tapered design.
Temperature, oil and chemical resistance.
Working pressure up to 1 bar.
Perfect compatibility with S+B bag positioning devices.
Proven in practice by various utility companies, confirming their reliability.
PRINCIPLE OF WORK
The bag(s) is inserted through a pre-drilled technological hole into the pipeline in the side opposite to the section to be cut off and is inflated with air, hermetically closing the pipeline along the axis.
AVAILABLE IN VARIOUS VERSIONS
MDA gas bags can be ordered as a single bag with or without pressure pre-measurement or as a double bag with vented channel.
In a
ddition, all units will be adapted to your operating conditions and equipped with an extensive range of accessories according to your wishes.
We will advise you on your choice and support you so that your job is done perfectly.
AREA OF APPLICATION
Due to their temperature/heat and oil/chemical resistance, MDA bags are particularly suitable for stopping:
Central heating pipelines
Pipelines in the chemical industry (on request)
Biogas lines
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Pipe plugs 
Pressure-Suction Pump 
Pneumatic flow-stop bags 
