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Pressure maintenance device with automatic switchover for use in a fire protection sprinkler system, and a related method
Pressure maintenance device with automatic switchover for use in a fire protection sprinkler system, and a related method
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机译:压力维护装置,具有自动切换,用于防火喷水灭火系统,以及相关方法
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摘要
A pressure maintenance device is connected to a fire protection sprinkler system having downstream piping that is exposed to freezing temperatures, and supplies a pressurized fluid to the downstream piping when the sprinkler system is in an inactivated state. When an outlet pressure sensor near an outlet of the pressure maintenance device detects that a pressure of the pressurized fluid downstream of an outlet regulator falls below a first predetermined pressure, the pressure maintenance device supplies the pressurized fluid in a primary supply mode or a secondary supply mode. The pressure maintenance device automatically switches from the primary supply mode to the secondary supply mode if a supply pressure sensor detects that a pressure of the pressurized fluid downstream of a first pressurized fluid valve, and upstream of the outlet pressure regulator, falls below a second predetermined pressure.
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