Case 1650M - Torque Values for O-Ring Face Seals (ORFS) Connections

INTRODUCTION
TorquevaluesforO-RingFaceSeals(ORFS)connections
SAE
dash
size
UN/UNF
threadsize
Inchtube
OD(mm)
Metric
tube
OD(mm)
Hexsize
(mm)
(Reference
only)
*
Swivelnut
torque
N·m(lbft)
±10%
**
Swivelnut
torque
N·m(lbft)
±10%
4
9/16-18
6.35617
27(19.9)27(19.9)
5
5/8-18
7.94819
34(25.1)34(25.1)
6
11/16-16
9.521022
44(32.5)44(32.5)
8
13/16-16
12.71224
65(47.9)65(47.9)
101-1415.881630
100(73.8)100(73.8)
12
1-3/16-12
19.052036
150(110.6)131(96.6)
14
1-5/16-12
22.232241
163(120.2)131(96.6)
16
1-7/16-12
25.42541
210(154.9)***131(96.9)
20
1-11/16-12
31.753050
280(206.5)***178(131.3)
242-1238.13860
375(276.6)***210(154.9)
*High/Medium-pressureapplications>50bar(725psi).
**Low-pressureapplications<50bar(725psi).
***Itisrecommendedtouseafour-boltangeconnectioninsteadofO-RingFaceSeals(ORFS)sizes"16"andup.
Torquevaluesfor37°areconnections-JointIndustryCouncil(JIC)
SAE
dash
size
UN/UNF
threadsize
Metric
tube
OD(mm)
Inchtube
OD(mm)
Swivelnuttorque
N·m(lbft)±10%
2
5/16-24
–
3.18
8.25(6.1)
3
3/8-24
–
4.76
11.5(8.5)
4
7/16-20
66.35
15.5(11.4)
5
1/2-20
87.94
20(14.8)
6
9/16-18
109.52
25(18.4)
8
3/4-16
1212.7
52(38.4)
10
7/8-14
1615.88
81(59.7)
12
1-1/16-12
2019.05
112(82.6)
14
1-3/16-12
–
22.22
133(98.1)
16
1-5/16-12
2525.4
155(114.3)
20
1-5/8-1230/32
31.75
180(132.8)
24
1-7/8-12
3838.1
225(166)
32
2-1/2-12
5050.8
348(256.7)
Torquevaluesfor30°are,60°coneconnections
Nominal
size(mm)
BritishStandardPipe
Parallel(BSPP)
threadsize
Hexsize(mm)
Swivelnuttorque
N·m(lbft)±10%
5,6,6.3
G1/4
17
25(18.4)
8,9,10
G3/8
19
34(25.1)
12,12.5
G1/2
22
64(47.2)
15,16,19
G3/4
30
132(97.4)
25
G1
36
196(144.6)
31.5,32
G1-1/4
46
225(166)
38
G1-1/2
50
255(188.1)
50,51
G2
65
316(223.1)
4804856726/04/2017
36