Foam Chamber

Foam Chamber

Foam Chamber

Foam Chamber is used in one of the most common application to protect vertical fixed roof (cone) liquid storage tanks, with or without internal floating roof with the low expansion foam system. The application of foam is on the basis that the risk comprises the total surface area of the fuel. The foam system design guidelines generally used are in accordance with NFPA-11, standard.

Foam chambers are defined by NFPA-11 as Type II discharge outlets for delivering the foam to the surface of a flammable liquid. The Foam Chambers are widely used with the Inline Foam Inductor, Balance Pressure Foam Proportioning system, Bladder Tank Proportioner or Foam Tender.





  1. Heavy duty welded construction with choice of Carbon Steel or Stainless Steel material
  2. Frangible Glass Vapour Seal
  3. Controlled Air Flow proportional to liquid flow for optimum foam quality and rupture of vapour seal in narrow pressure tolerances for increased reliability
  4. Field replaceable orifice plate fitted with Foam Chamber


Model No.Inlet SizeOutlet SizeFlow Rate (LPM)
AFFF 3% (as per UL)AFFF 3% (as per FM)AFFF 6% (as per FM)
NF-FC65 / NF-FCSS6565 NB100 NB150 – 550173 – 559173 – 559
NF-FC80 / NF-FCSS8080 NB150 NB300 – 1021330 – 997338 – 1022
NF-FC100 / NF-FCSS100100 NB200 NB600 – 2400658 – 1855653 – 1839
NF-FCR150150 NB250 NB—*2497 – 39752487 – 4047
NOTES: *150 NB Foam Chamber not included in UL Listing.

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