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  • Mutschmann / Stimmelmayr paperback of the water supply
    The sprinkler systems are divided in - wet installation by that the pipe network up to individual sprinklers is constantly filled with water - the dry installations filled the pipe network by that between alarm valve and sprinklers with air are.
  • Something you normally don't do with a potato
    I recently made an pneumatic potato gun with pvc,air valve , and a sprinkler valve.
  • House technique
    Here, the pipe network behind a dry alarm valve station is filled with compressed air , that is locked the inrush of water in the sprinkler pipe network.