Bag positioning devices

MDA™ safety technology backed by tradition and experience.

Bag positioning devices to temporarily stop-off gas pipes according to BRG 500 regulations.

All MDA™ bag positioning devices (both single and double bag positioning devices) are DVGW certified.

MDA™ bag positioning devices are the only certified double bag positioning devices on the market:

• Position of both bags into one direction (against the pressure)
• Both bags are connected sequentially, using the full diameter of the setting sleeve for lower load on the material during positioning and pulling especially of the 2nd bag
• Each bag features its own air inlet
• Exchanging of a busted bag is not necessary since the second bag is able to hold the pressure until work on the pipe is completed
• Since both bags are inserted towards the direction of the pressure and not towards the working area, less space and therefore less excavation work is required
• Measuring the pre-pressure allows controlled release of the pressure between bags
• A gas insert allows releasing pressure, flushing and re-filling of the workspace

MDA™ bag positioning devices are also available for water pipes, long-distance energy pipes and applications of the chemical industry.