1. Offset Motion
Offset motion occurs when one end of the hose assembly is deflected in a plane perpendicular to the longitudinal axis with the ends remaining parallel.
Formula: L=√6RX+X² Lp=√L²-X²
L = Live hose length (inches).
Lp = Projected Live Hose Length (inches).
R = Minimum Centre Line Bend Radius for constant flexing (inches).
X = Offset Motion to one side of Centre line (inches).
* Formula must only be used in inches
Note 1: when the offset motion occurs to both sides of the hose centre line, use total travel in the formula; i.e. 2 times ‘’X’’
Note 2: The offset distance ‘’X’’ for constant flexing should never exceed 25 percent of the centre line bend radius ‘’X’’
Note 3: If the difference between ‘’L’’ and ‘’Lp” is significant, exercise care at installation to avoid stress on hose and braid at the maximum offset distance.
2. Horizontal Movable Pipe System
3. Vertical Movable Pipe System
Illustration of Mark
S: Volume of Variation.
L: Length of Variation.
0: Angle of Variation.
π: Pi 3.142.
R: Min centre line bend radius for constant flex.
Lp: Project live hose length.
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