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Floor Control Valve Assembly, where required and where not?!

Floor Control Valve Assembly For Combined Risers


Floor Control Valve Assembly
Floor Control Valve Assembly


Floor control valve assembly components:

  • Floor Control Valve with supervisory switch
  • Check valve
  • Main drain valve
  • Pressure Gauge
  • Flow switch

Where required?!

Floor control valve assembly shall be provided in buildings exceeding two stories.

Where not required?!

  • Floor control valves assembly is not required for dry systems in parking garages.
  • Floor control valve assembly shall not be required where sprinklers on the top level of a multistory building are supplied by piping on the floor below.
  • Floor control valve assembly shall not be required where the total area of all floors combined does not exceed the system protection area limitations of required by NFPA 13.

Note that: System protection area limitation according to NFPA 13 is as followings:

  • For light hazard occupancies is 4830 m2.
  • For ordinary hazard occupancies is 4830 m2.
  • For Extra hazard occupancies is 3720 m2.
  • For high piled storage is 3720 m2.
  • For in-rack storage is 3720 m2.

Note that: Where individual floor/zone control valves are not provided, a flanged joint or mechanical coupling shall be used at the riser at each floor for connections to piping serving floor areas in excess of 465 m2.


References of the article:

NFPA 13 - 2019 edition (Standard for the Installation of Sprinkler Systems).

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