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Fire Extinguisher Hydrotesting

Guardian Fire Protection provides fire extinguisher hydrotesting testing for every type of fire extinguisher available. Fire extinguisher hydrotesting is required at regular intervals to ensure that the shell of the fire extinguisher holds up under pressure. Periodic hydrostatic pressure testing is performed on portable fire extinguishers to evaluate the containers’ strength against unwanted failure. The tests are performed by qualified service technicians in a controlled environment to minimize the risk of injury or damage.

Hydrostatic testing is performed by filling the container with water or another non-compressible fluid that is compatible with the fire extinguisher container. The pressure is then increased on the container to a specific point as required by the manufacturer or Federal safety standards, and the container is inspected for potential failure points. The pressure must be maintained for at least 30 seconds.

National Fire Protection Association (NFPA) 10, Standard for Portable Fire Extinguishers, provides the following hydrostatic test frequency based on the different types of portable fire extinguishers.

Fire Extinguisher Hydrotest Intervals

 Extinguisher Type

Testing Interval 

Stored Pressure Water, Loaded Stream, and/or Antifreeze fire extinguishers

5 Years

Wetting Agent fire extinguishers

5 Years

AFFF (Aqueous Film Forming Foam) fire extinguishers

5 Years

FFFP (Film Forming Fluoroprotein Foam) fire extinguishers

5 Years

Dry Chemical With Stainless Steel Shells fire extinguishers

5 Years

Carbon Dioxide fire extinguishers

5 Years

Dry Chemical, Stored Pressure, with mild steel shells, brazed grass shells, or aluminum shell fire extinguishers

12 Years

Dry Chemical, Cartridge or cylinder operated, with mild steel shell fire extinguishers

12 Years

Halogenated Agent fire extinguishers

12 Years

FE-36 fire extinguishers

12 Years

Dry Powder, Stored Pressure, Cartridge or Cylinder-Operated, with mild steel shell fire extinguishers

12 Years


Fire extinguisher hydrotesting is an important part of any fire protection plan. For more information or to schedule your fire extinguisher hydrotest, call Guardian Fire Protection today.

Why call Guardian for fire extinguisher hydrotesting?

Guardian Fire Protection has over 40 years of experience providing complete fire protection services for businesses, organizations, government buildings, and restaurants in Maryland, Virginia, and Washington, DC. Our number one focus is your safety—we  want to make sure your employees, property, and valuables are safe from the dangers of potential fires. We take pride in our “customer first” reputation, and will do whatever it takes to make sure your property and valuables are protected from fire hazards and your building meets fire safety codes.

The best thing about partnering with Guardian Fire Protection is we are your single-source solution for all fire protection services. Our experienced fire safety professionals specialize in all aspects of fire protection—from simple fire extinguisher replacement to fire suppression system design and engineering; sales, installation, testing and inspection; maintenance and repairs; from fire sprinklers, fire pumps and commercial kitchen fire suppression to fire alarms and emergency exit lighting – we do it all!

Located in Maryland, Virginia or Washington, DC and want to learn more? Call us today to speak with one of our experienced fire safety professionals and discover why top names in business and government consistently recommend Guardian Fire Protection for fire extinguisher hydrotesting!

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