Even for DN 300 bags, the maximum counter-pressure of our MDA™ 1 bar bags is 750 mbar, which is truly unique for stop-off bags of this type.
In comparison to conventional testing and stop-off bags (textile bags), the new MDA™ bags offer a number of vital advantages:
- Excellent gas tightness due to a special rubber type
- Perfect positioning of the bag as soon as pressure is applied in combination with extreme mechanical resistance
- Conical shape for superior flexibility and easy insertion even through bends
- Highly resistant against temperature, oil and chemicals
- Designed for easy positioning with the help of MDA™ bag positioning devices
- Compatible with practically all bag-positioning devices on the market
Due to their temperature/heat resistance and its high resistance against oil and chemicals, MDA™ bags are ideal for stopping-off
- Long-distance energy pipelines
- Pipelines of the chemical industry
Comprehensive tests in cooperation with various utility providers and users supports the superior reliability of the new generation of MDA™ stop-off bags.
MDA™ stop-off bags are available as single bags with and without pressure measurement, as double bags with tension release of the space between bags and as bags for manual positioning with T-fitting, ball valve, pressure gauge and conical rubber stopper.
