What is the hydrostatic test interval for dry chemical extinguishers with a stainless steel shell?

The hydrostatic test interval for dry chemical extinguishers with a stainless steel shell is five years. This interval is established based on safety standards and regulations to ensure that the extinguisher remains functional and safe to use in the event of a fire. Stainless steel is known for its durability and resistance to corrosion, which can extend the life of the extinguisher compared to others. Regular hydrostatic testing is essential because it checks for leaks, integrity, and structural soundness of the extinguisher under pressure, helping prevent failures that could occur if the extinguisher is needed during an emergency. Testing every five years for stainless steel extinguishers aligns with industry standards and helps maintain safety compliance.