The EVERSAFE range of AFFF foam and water extinguishers are certified o BS EN 3 and are manufactured under an ISO 9001 approved Quality System. The Cylinders are fully deep drawn from cold rolled steel, and pressure tested to twice the extinguisher’s working pressure. Cylinders are externally coated with polyester (with phosphate under treatment) for maximum corrosion resistance and have passed the 480-hour salt spray test. The internal of the extinguishers bodies are coated with “performance polymer alloy” to prevent corrosion. The hot forged brass valve is fitted with pressure indicator. *These extinguishers also passed the 35KV electrical conductivity test to BS EN 3-7, clause 9 Annex C. Water: Water extinguisher is used for Class A fire involving carbonaceous materials such as wood, paper and textiles by cooling the fire and removing the heat needed for combustion. Water spray rpovides better wetting action that penetrates underlying burning materials and assist in reducing heat.t.