(905) 670-0113
Temperature Adjustment Factors:
In general, the strength and therefore the pressure rating of metal hose decreases as the temperature increases. Thus, as the operating temperature of a metal hose assembly increases, its maximum allowable working pressure decreases. The pressure rating shown below for corrugated and interlocked hose are valid at 70°F. Elevated service temperatures will decrease these pressure ratings by factors show in the following chart. Derating factors are based on braid alloy. For example, to calculate the maximum working pressure for a 700 series 3/4″ 321 stainless steel corrugated hose with one layer of 304L braid that will be operating at 800°F, mutiply working pressure (792 PSIG) by appropriate derating factor (.73). The working pressure for the hose at 800°F is 578 PSIG. Keep in mind, the maximum working temperature of the end fittings and method of attachment must also be considered.
Normal
I.D
No.
Braids
O.D
(in.)
Weight Per
Foot (lbs.)
Constant (di.)
Flexing (in.)
Bend (di.)
Static (in.)
Max Work
PSI
Max Test
Burst
0
1
2
.48
.57
.64
.09
.17
.26
180
2116
3125
270
3844
4687
-
8464
12500
`0
.63
.70
.81
.13
.25
.36
100
1501
2401
150
2251
3602
6004
9604
.82
.89
.96
.23
.34
.46
80
1075
1720
120
1613
2580
4301
6880
1.21
1.28
1.35
.39
.59
.79
70
792
1267
105
1188
1901
3168
5069
1.51
1.58
1.65
.53
.75
.98
40
571
914
60
857
1370
2285
3654
1.85
1.93
2.02
.76
1.07
1.37
25
531
850
38
797
1274
2125
3398
2.19
2.28
2.37
.84
1.23
1.63
20
472
755
30
708
1133
1887
3021
2.60
2.72
2.84
.90
1.52
2.14
15
516
826
23
774
1239
2064
3302
3.23
3.33
3.43
1.16
1.86
2.56
12
387
619
18
581
929
1548
2477
3.78
3.88
3.98
2.00
2.80
10
316
506
474
758
1264
2022
4.85
4.98
5.10
1.69
2.68
3.68
8
232
371
348
557
927
1485
5.90
6.03
6.15
2.50
3.75
5.00
6
191
306
9
286
458
764
1222
6.87
7.10
7.33
3.47
4.75
6.04
36.00
5
165
264
247
396
660
1056
9.09
9.19
9.28
5.56
9.44
13.36
234
374
350
561
934
1495
"*" indicates required fields
Step 1 of 3
