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 NumberDescriptionApproximate Shipping WeightApproximate Shipping Volume
10503T-STORM foam concentrate, 3% AFFF, F783BP, 5 gallon (19 L) pail45 lbs. (20.4 kg)1.25 ft3. (0.035 m3)
10504T-STORM foam concentrate, 3% AFFF, F783BD, 55 gallon (208 L) drum495 lbs. (224.5 kg)11.8 ft3. (0.335 m3)
10505T-STORM foam concentrate, 3% AFFF, F783B265T, 265 gallon (1,000 L) tote2,463 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.