SENTRY shells are produced by a cold deep draw process which yields a seamless steel cylinder with a high tensile strength.Unique pre-treatment of the raw low carbon steel not only consists of a cleaning process, but also applies a special lubricant which helps keep the interior and exterior shell surfaces scratch free.. The collar and specially pre-formed bottom enclosure are MIG welded to produce a smooth, high integrity weld.4. Extinguisher shells are 100% factory air tested to a minimum of 720 psi (49.6 bar) for 5 lb, 10 lb, and 20 lb models and 375 psi (25.8 bar) for 2 1/2 lb. models.

Ansul Fire Extinguisher, Dry Chemical Extinguisher, Type B/C Size I, UL Rating 1-A:10-B:C, Extinguishing Agent Sentry, Wall Hanger, 2-1/2 lb Capacity, 9 sec Discharge, 11 ft Maximum, 13-3/4 in Height, 3-3/8 in Dia, 195 psi Operating, Steel Valve, Seamless Steel Cylinder

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