According to which the hose assembly is manufactured
Annular Core
Designed so that each convolution is a complete circle or ring
Close Pitch
Less spacing between the corrugations, thereby giving longest fatigue life
and minimum bend radius
Braid
Woven wire sheath placed over hose which prevents elongation of the hose
under internal pressure
Fittings
Parts attached to the ends of metal hose so that it can be connected to
other components like flanges, unions, stub ends, nipples
Constant flexing bend radius
The minimum radius to which a hose can be repeatedly bent and render
satisfactory flexure life
Operating conditions
Pressure, Temperature, Media, Motion and application involved
Max. Test Pressure
Max. Pressure for testing purpose. Based on 150% of the max.
working / design pressure
Media
Material conveyed by the hose assemblies such as chemicals, gases,
liquids
Working temperature
Temperature which hose is subjected to during operation
Corrosion Data
Contact KFI or any NACE standards
Rated Burst Pressure
The pressure at which the hose assembly can be expected to fail
Safety Factor
Difference between working pressure and rated burst pressure
CONSTRUCTON
Specification
BS 6501
Close Pitch Annular Core
SS 304, SS 304L, SS 321, SS 316, SS 316L
Braid
SS 304, SS 316
Size Range
1/4" ID to 8" ID
Temperature
(-)200 to 800°C for SS 321 / SS 316 / SS 316L
(-)200 to 400°C for SS 304 / SS 304L
TECHNICAL DATA
Size
(ID)
OD
(Single Braid)
Single Braid
(bar g)
Double Braid
(bar g)
Bend Radius (mm)
(Single Braid)
Inch
mm
mm
W.P.
T.P.
W.P.
T.P.
Static
Dynamic
1/4
6.40
12.20
100
150
100
225
45
100
3/8
9.50
15.80
90
135
90
203
50
150
1/2
12.70
19.00
80
120
80
180
65
200
3/4
19.05
26.30
64
96
64
144
70
203
1
25.40
33.80
50
75
50
13
104
229
1 1/4
31.75
42.00
40
60
40
90
117
267
1 1/2
38.10
51.60
30
45
30
68
152
292
2
50.80
61.70
28
42
28
63
160
318
2 1/2
63.50
77.00
24
36
24
54
175
508
3
76.20
91.00
18
27
18
41
231
610
4
101.60
117.50
16
24
16
36
250
750
5
127.00
149.00
12
18
12
27
318
900
6
152.40
178.00
10
15
10
22.5
353
1050
8
203.20
228.00
8
12
8
18
456
1180
* Working Pressure and Test Pressure are at ambient temperature of 30°C. For elevated temperatures, please refer temperature correction factor.
* Safety Factor 1 : 4
* For other technical details such as pressure drop, weight, no. of convolutions, please contact KFI's Technical Department.
TEMPERATURE CORRECTION FACTOR
Temp. (°C)
Correction Factor
(-) 200 to 50
1.00
100
0.94
150
0.88
200
0.84
250
0.79
300
0.76
350
0.71
400
0.67
450
0.64
500
0.61
550
0.60
600
0.58
650
0.55
700
0.50
750
0.45
800
0.44
How to apply?
- Determine Max. Working Temperature
- Locate appropriate correction factor on chart
- Multiply the correction factor by max. working pressure
SPECIAL TYPES OF METAL HOSE ASSEMBLY
With Inside Liner
( i.e Interlocked, Rubber , Teflon)
