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.

The maximum “operating pressure” of a component or system. Identified as “WP” on Forest Service-qualified fire hose. Also known as “rated pressure".

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.

Any of various partially crystalline lightweight thermoplastics that are resistant to chemicals and moisture, have good insulating properties, and are used especially in packaging, insulation and sometimes for wildland engine water tanks.