青云翻译

In order to ensure the system safe and reliable, the most unfavorable for each alarm valve nozzle at the set end water device, the nozzle at the other fire district and on each floor of the most unfavorable, located dn25 pilot valve.

To ensure the system is safe and reliable, each alarm valve end of the most disadvantaged group head office test water device, other fire safety sections, and floors of the most disadvantaged nozzle, try DN25 valve.

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In order to ensure that the system safe and reliable, each alarm valve group in the most disadvantaged head office, located at the end try water unit, and the other fire districts and all the floors, the most negative sprinkler DN are 25 water valve.

To ensure the system is safe and reliable, each alarm valve end of the most disadvantaged group head office test water device, other fire safety sections, and floors of the most disadvantaged nozzle, try DN25 valve.