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T-STORM F783B 3% AFFF is a specially formulated, synthetic, aqueous film-forming foam concentrate.  A vapor suppressing aqueous film is formed by the foam solution draining from the expanded foam blanket.  It is intended for use at a proportioning rate of 3% (3 parts AFFF concentrate to 97 parts water) on Class B hydrocarbon type fuels such as gasoline, kerosene, diesel, etc.  F783B 3% AFFF is not intended for use on polar solvent/water miscible fuels such as alcohols, ketones, esters, etc.


  • U.L. Listed, Foam Liquid Concentrates
  • U.L. recommended application rate on hydrocarbon type fuels is 0.10/gpm ft²
  • U.L. Canada Listed
  • Performance to ICAO, Doc. #9137, Part 1, Chapter 8, Level “B” verified
  • Suitable for use with fresh or salt water
  • Excellent wetting characteristics when used in combating Class “A” fuel fires
  • Suitable for use with both aspirating foam and standard water fog nozzles
  • Suitable for use with deluge or closed head foam water sprinkler systems
  • If inadvertently frozen, thawing will render product completely serviceable again
  • Suitable for use with carbon steel, fiberglass, polyethylene or stainless steel. F783B 3% AFFF is not compatible with galvanized pipe or fittings in an undiluted form
  • Suitable for use with siliconized dry chemical extinguishing agents


  • Fixed or portable in-line eductors
  • In-line balanced pressure and pump pressure proportioning skid
  • Bladder tank balanced pressure proportioning systems
  • Around the pump proportioners
  • Handline, air-aspirating nozzles with fixed eductor pickup tube

Discharge Devices

  • Foam Chambers
  • Air-aspirating and non air-aspirating sprinkler heads or spray nozzles
  • Standard water fog nozzles for handlines and monitors
  • Air-aspirating foam nozzles
  • Foam makers for use with either Floating Roof storage tanks or Dike/Bund protection systems
  • High back pressure foam makers for sub- surface base injection system (hydrocarbon type fuels only)


  • Crash Fire Rescue
  • Storage Tanks (non-polar solvent type fuels only)
  • Truck Rail Loading or Unloading Facilities
  • Processing/Storage Facilities
  • Docks/Marine Tankers
  • Flammable Liquid Containment Areas
  • Mobile Equipment

Foam Properties

Aspirating type discharge devices typically generate expansion ratios between 6-10 to 1 when 3% AFFF is mixed with water at the correct ratio. Non-aspirating type devices will typically generate expansion ratios of between 2-4 to 1. Expansion ratios are dictated by the type of discharge devices, flow rate and discharge pressure.

Typical Properties at 77ºF / 25ºC

  • Appearance Clear Slightly Yellow
  • Specific Gravity = 1.020
  • pH = 7.7
  • Viscosity = 1.5 cps

Storage/Shelf Life

If kept in the original unopened and airtight factory supplied container and stored within the temperature range of 35ºF - 120ºF (2ºC - 49ºC) a shelf life of between 20-25 years can be expected. When stored in other than the manufacturers supplied container, please check with manufacturer for storage guidelines.

Ordering Information

T-STORM F783B is available in pails, drums, or totes.

Part Number Description Approximate Shipping Weight Approximate Shipping Volume
10503 T-STORM foam concentrate, 3% AFFF, F783BP, 5 gallon (19 L) pail 45 lbs. (20.4 kg) 1.25 ft3. (0.035 m3)
10504 T-STORM foam concentrate, 3% AFFF, F783BD, 55 gallon (208 L) drum 495 lbs. (224.5 kg) 11.8 ft3. (0.335 m3)
10505 T-STORM foam concentrate, 3% AFFF, F783B265T, 265 gallon (1,000 L) tote 2,463 lbs. (1,117 kg) 31.5 ft3. (0.892 m3)

Environmental Impact

F783B is biodegradable, low in toxicity and can be treated in sewage treatment plants. 



Company Brands

Rapid Response
Sabo Foam