The pressure bag is a robust multidimensional bag configured from DN 90 to DN 150. A safety air pressure coupling prevents any unexpected loosening of the pressure bag from the multifunctional manhole. A 10 metre rigid PA rod with a steel spiral coating to prevent hose kinks is available for filling the pressure bag and for assisting in its positioning.

The pressure bag, which is also suited as a multidimensional bag from DN 90 to 150, is equipped with four connecting hoses between 30 and 40 cm:

• Connecting hose with stop box, designed to feed the 10 m long PR rod to the pressure bag
• Connecting hose with type 21 air closing coupling designed to fill the testing bag
• Connecting hose with GEKA water coupling designed to fill the pipe rod, to determine the pressure and to mount the blocking device with fire hose port and pressure gauge
• Connecting hose with ball valve designed to vent the pipe rod when conducting a water test.

An aluminium transport case with a foam insert for easy transport of the testing set is available at additional cost.

The 10 metre PA rod is attached to the pressure bag through the corresponding connecting hose.

The pressure bag is coupled to the PA rod and brought into position via the relatively stable PA rod.

Once the pressure bag is in position, it is pressurised up to 2.5 bar via the testing head with pressure gauge.

The PA rod is now fixed to the connecting hose and sealed via the stop box.

The pressure bag attached to the descending rod of the building inspection shaft is also pressurised up to 2.5 bar.

Now the closing device with ball valve and pressure gauge is attached to the corresponding connecting hose. The pipe to be tested is then filled with water or air up to 0.5 bars of operating pressure. When a water test is carried out, the pipe rod must also be vented at the same time via the connecting hose with the ball valve.

After this, the actual test is carried out. If the pressure does not drop in accordance with DIN 4033 or EN 1610 (process “W” and “L”), then the tested pipe does not have a leak.

By moving the pressure bag in increments, the entire length of the house connection pipe can be tested and a leakage located.

Emptying and relaxing of the tested line is possible by releasing the pressure from the pressure bag completely.