Angular Offset
The bending of the hose so that the ends are no longer parallel. Amount of movement is measured in degrees from centerline of the hose.

Axial Motion
Compression or extension movement along the longitudinal axis of the pipeline.

Bend Radius
The radius of a hose measured at the hose centerline.

Braid
Metal wire braid on a hose assembly permits the hose assembly a higher pressure capability by acting as a restraint against hose elongation and acts to dampen vibrations. A second layer of braid may be used to increase pressure ratings provided the test presure does not result in permanent corrugation deformation. Other design considerations may result in the use of a heavy braid to increase abrasion resistance characteristics.

Braid Sleeve / Ferrule
The Braid Sleeve or Ferrule is used to isolate the end of the corrugated hose and braid from flexure. The core and braid are welded to the braid sleeve or ferrule during fabrication of the hose assembly.

Constant Flexing
Regular cyclic motion at a slow cyclic rate and constant travel. The Dynamic Minimum Centerline Bend Radius must be doubled on constant flexing applications.

Corrosion
The chemical or electro-chemical attack of a media upon a hose assembly.

Developed Length
Overall length of the hose assembly, including the fittings, that is required to meet the conditions of a specific application.

Fatigue
Failure of the hose assembly due to excessive flexing of the corrugations.

Live length
The amount of active or flexible length of hose in an assembly. Does not include the length of fittings and fixtures.

Loop Installation
The assembly is installed in a loop or U shape and is most often used when frequent and/or large amounts of motion are involved.

Minimum Bend Radius
The smallest radius to which a hose can be bent without permanent deformation of the corrugations.

Operating Conditions
The pressure, temperature, motion and environment to which a hose assembly is subjected.

Pressure, Maximum Working
Maximum pressure that the hose should be subjected to on a continuous basis.

Pressure, Maximum Test
Maximum pressure the hose should be subjected to during proof pressure testing without permanently deforming the corrugations.

Pressure, Burst (Actual)
Failure of the hose determined by testing in which the braid fails in tensile or the hose ruptures, or both, due to the internal pressure applied.

Reinforced Ends
A short interlocked casing or spring guard used to restrict bending at the end of the hose.

Torque / Torsion
A force that produces or tends to produce rotation of or torsion about the longitundinal axis of a hose assembly while the other end is fixed.

Velocity
The speed at which the medium flows through the hose.

Vibration
Low amplitude motion occuring at high frequency.