Fire Sprinkler Manufacturers

DN250 Pre-action Automatic Fire Sprinkler System

This page is about DN250 details information. Pre-action Automatic Fire Sprinkler System, has ZSFY100, ZSFY150, ZSFY200, ZSFY250. 

  • Brand:

    GBOCO or Guangbo
  • Item no.:

    DN250 Deluge Valve
  • Payment:

    T/T, Chinese Agent Transfer RMB, Cash Payment
  • Market price:

    $1300
  • Product origin:

    Fujian, China
  • Color:

    Usualy is Red
  • Goods stock:

    100
  • Shipping port:

    Xiamen-Fujian, Or Other Seaport in China
  • Lead Time:

    3-5 days
  • Product Details

Pre-action automatic sprinkler system is usually composed of pre-action device (pre-action alarm valve group, control panel, air pressure maintenance device and air supply device, etc.), transmission system, pipe network, closed sprinkler, water source control valve, signal valve, etc. 

Pre-action automatic sprinkler alarm system is often used in places where water damage and accidental spraying are not allowed, such as computer room, generator room, data room, archive room, elevated warehouse; it can also be used instead of dry automatic sprinkler alarm system for Where the wet automatic sprinkler alarm system is not available due to cold or high temperature.

Model Specification ZSFY100-1.6 ZSFY150-1.6 ZSFY200-1.6 ZSFY250
Nominal Diameter (mm) DN100 DN150 DN200 DN250
Fixed Work Stress (MPa) 1.6
Working Pressure Range (MPa) 0.14~1.6
Operating Temperature (ºC) from 4ºC until 70ºC 
System Side Inflation Pressure (MPa) 0.03 ~ 0.05
Hydraulic Friction (MPa) ≥0.08
Alarm Loudness (dB) ≥70
Bolt Hole Dividing Circle (mm) 180 240 295  
Bolt Hole Z-D (mm) 8-18 8-22 12-22  
Pre-action Alarm Valve Device Details See Bellow Pictures








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Our company provides technical support for who use our Firefighting products. Please contact the technical department of our company, if any problem in the procurement, installation, use and maintenance process, our technical staff will immediately provide related technical support.





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