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Annular convoluted hoses & Stainless Steel 316/321 > Movement and Temperature Correction


  Nominal hose length for movement applications
 

S = overall length
R = bend radius which must not be less than the minimum shown on page B-FLEX and C-Flex
L = length over end fitting and ferrule
C = Height
Π = 3.142
Note : in loop installations both connections and travel should be in the same plane as the bend.

Temperature correction factors
Where hoses are required to operate at temperatures above 20°C a correction factor must be multiplied by the stated working pressure given for the selected hose. The factors of Stainless Steel flexible hoses are given in the following table and the following example shows how calculations are made for hoses required to operate at elevated temperatures.

Example
A 40 mm bore Stainless Steel hose is required to convey fluid at a working pressure of 17 Bar and a temperature of 300°C. From the Maximum Working Pressure at 20°C for Single Braid Ref.ASB/241 is 34 Bar. From the chart alongside, Maximum Working Pressure at 300°C=34x0.61=20.74 Bar. The hose selected is therefore suitable for the application.

Carbon steel fittings
Carbon steel end fittings SHOULD NOT be used below -20°C or above 400°C.

 
Type B-FLEX or C-FLEX
Temperature °C Cor. Factor
-200 1.0
-150 1.0
-100 1.0
-50 1.0
0 1.0
20 1.0
50 0.95
100 0.83
150 0.75
200 0.69
250 0.65
300 0.61
350 0.58
400 0.56
450 0.54
500 0.53
550 0.52
600 0.34
650 0.19
700 0.10