Ok -Lok Tube Fittings Table 4. Fractional Seamless Copper Tubing Soft annealed seamless copper tubing ASME B75 or equivalent. Soft annealed (Temper 0) copper water tube, type K or Type L ASTM B88. Recommended hardness: 60 HRB or less. OD in.
Wall Thickness (in.)
1/8
0.028 2,700
3/16
1,800
0.035 3,600 2,300
1/4
1,300
1,600
0.010
0.012
0.049
0.065
0.095
0.083
Working Pressure in PSIG
3,400
5/16
1,300
2,500 1,900
3/8
1,000
1,600
2,200
1/2
800
1,100
1,600
5/8
900
1,200
3/4
700
1,000
7/8
600 500
1
0.120
0.109
3,500 2,700
2,100 1,600
1,900 1,500
800
1,300 1,100
1,300
1,800 1,500
700
900
1,100
1,300
1,500
Table 5. Metric Seamless Copper Tubing Wall Thickness (mm)
OD mm
0.7
0.8
3
225
260
4
165
1.0
1.2
1.5
1.6
1.8
2.0
2.2
Working Pressure in Bar
191
244
295
6
122
157
192
245
263
8
89
114
140
179
193
10
70
89
109
140
150
172
193
12
58
73
89
114
123
140
158
14
62
76
96
103
118
133
148
171
209
16
54
66
83
89
102
114
127
147
180
18
48
58
74
79
90
101
112
129
159
22
39
47
59
64
72
81
90
103
126
25
34
41
52
56
63
71
78
90
110
Allowable working pressure calculated at -20 to 100째F (-28 to 37째C) using S value of 6,000 psi according to ASME 831.3 Code.
Safety Factor is 5 to 1, considering ultimate tensile strength of 30,000 psi. Table 6. Fractional Seamless Carbon Steel Tubing Soft annealed seamless carbon steel hydraulic tubing ASTM Al 79 or equivalent. Tubing to be free from scratches, draw mark, dirt, durst, flat spots, and suitable for bending and flaring. Recommended hardness: 72 HRB or less. Wall Thickness (in.)
OD in.
0.028
0.035
1/8
8,000
10,200
3/16
5,100
6,600
1/4
3,700
3,700
7,000
9,600
5/16
3,800
5,500
7,600
3/8
3,100
4,500
6,200
1/2
2,300
3,300
4,500
5,900
5/8
1,800
2,600
3,500
4,600
5,300
3/4
2,100
2,900
3,700
4,300
5,100
7/8
1,800
2,400
3,200
3,700
4,300
1
1,500
2,100
2,700
3,200
3,700
4,100
1,600
2,100
2,500
2,900
3,200
3,600
4,000
4,600
5,000
1,800
2,000
2,400
2,600
3,000
3,300
3,700
4,100
5,100
1,500
1,700
1,900
2,200
2,400
2,700
3,000
3,700
1 1/4
1 1/2 2
Oklboh Oarparstion
0.049
0.065
0.083
0.095
0.109
0.120
0.134
0.148
0.165
0.180
0.220
9,600
Working Pressure in PSIG
All dimensions are in millimeters unless otherwise specified and only for reference subject to change.
6
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