The AGRU Stop-Off-Saddle is used wherever damage to gas pipes must be repaired quickly and when there are no valves to shut off.

The Stop-Off-Saddle is welded to the desired pipe location and then the balloon positioning device is mounted onto the saddle. The pipe must be tapped through the Stop-Off-Saddle, a sealing balloon is then inserted and inflated. This seals the pipe from the inside and stops the gas flow.
Once the repairs are completed, the balloon is removed and a metallic plug closes the opening of the clamp. After removing the balloon positioning device, the additional PE sealing cap is screwed to the clamp.