METAL
HOSE ASSEMBLY
TERMINOLOGY
| Specification
|
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 |
TECHINICAL
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)
|
With
Outside cover
( i.e Interlocked, Rubber)
|
Vacuum
/ Steam Jacket
|
|
|
|
|
INSTALLATION
METHODS
ANGULAR
BENDING
END
FITTINGS
|
Hex
Male Nipple (BSP/NPT/METRIC)
|
Fixed
Female (BSP/NPT/METRIC)
|
Swivel
Female (BSP/NPT/METRIC)
|
|
|
|
|
|
Weld
neck Flange
(ASA/DIN/BS)
|
Lap
Joint Flange
(ASA/DIN/BS)
|
Fixed
Flange
(ASA/DIN/BS)
|
|
|
|
|
|
Plain
Male Nipple (BSP/NPT/METRIC)
|
Plain
Female Nipple (BSP/NPT/METRIC)
|
Pipe
weld ends
(37 1/2 ° Bevel end)
|
|
|
|
|
|
Female
Union (BSP/NPT/METRIC)
|
Male
Union
(BSP/NPT/METRIC)
|
JIC
37° Seat
(UNF)
|
|
|
|
|
|
Victaulic
Groove Pipe End
|
With
45° elbow
|
With
90° elbow
|
|
|
|
|
|
