A self-contained unit including an auxiliary engine driven pump, piping, a tank, and hose storage that is designed to be placed on a truck chassis, utility bed, flat bed, or trailer. Such units can typically be attached and removed from the vehicle with a minimum amount of time and effort.

The pressure applied to a hose during periodic testing to determine if the hose can remain in service.

The height hose lifts from its original flat position once hydrostatic pressure is applied.

A substance or chemical agent which reduces the flammability of combustibles.

The maximum “operating pressure” of a component or system. Also known as “working pressure” in Forest Service specifications.

Same value as pump performance value (USDA Forest Service standard).

Filling pump with water when pump is taking water not under a pressure head. Necessary for centrifugal pumps.

An output shaft on an engine, transmission, or transfer case of a motorized vehicle that delivers engine power to auxiliary equipment.

This type plastic normally is used for round molded tanks, is not ultraviolet resistant, a poor choice for fire apparatus.

A copolymer plastic, usually black, that is strong, ultraviolet resistant, not effected by chemicals and a good choice for wildland engine water tanks.