Flexible Ducting Definitions

PITCH: Distance between the centerlines of adjacent wires when the hose is in a fully extended position.

MINIMUM BEND RADIUS: Minimum radius (at centerline of inside diameter) to which hose can be bent without kinking or flattening.

COMPRESSIBILITY: Minimum length to which one foot of hose can be compressed lengthwise.

CRUSH RESISTANCE: Pounds per foot required to deform hose to 50% of normal diameter.

ABRASION RESISTANCE: Characteristics of the material being handled---velocity, temperature, size and shape of conveyed particles, etc. in combination with hose characteristics and configuration, determine the degree of abrasive action.