UL 92

These requirements cover fire extinguisher and booster hose with or without couplings attached, in sizes of 3/8 inch (9.5 mm) up to and including a nominal internal diameter of 1-1/2 inches (38.1 mm) for use on portable, wheeled, and stationary fire extinguishers, and also as booster hose on fire apparatus. This hose is intended for use at maximum working pressure of 200, 250, 400, 600, 800, 1000, or 1250 psig (1.38, 1.72, 2.76, 4.14, 5.52, 6.90, or 8.62 MPa). These requirements also cover hose for use on fire extinguishers requiring characteristics for low-temperature flexibility at minus 54C (minus 65F).

A product that contains features, characteristics, components, materials, or systems new or different from those in use when the standard was developed, and that involves a risk of fire, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to maintain the level of safety for the user of the product as originally anticipated by the intent of this standard.