| 摘要 |
An antifreeze arrangement especially for automatic sprinkler systems comprising a frangible membrane, secured to a bellows interposed in the water supply pipe to the sprinkler system, antifreeze solution downstream of the membrane with water upstream thereof, the membrane being one that breaks out but does not separate from the bellows when a sprinkler relieves the pressure on the downstream side. Pressure equalizing piping connections, filling piping, and a specific gravity indicator are provided.
|
