Pressure RatingsCarbon Steel Adapters and Fittings Maximum Operating Pressure
Recommended maximum working pressures are based on limited laboratory test data and intended only as approximate guidelines, based on a 4:1 safety factor relative to the connection minimum burst pressure. Testing was conducted at SAE recommended assembly torque in hardened test blocks. The maximum pressure for any adapter or tube fitting must be lower of the chosen mating end types. Pressure ratings must be adjusted for any change in adapter material.
All pressure ratings are shown in pounds per square inch (psi).
| Dash Size |
Nominal Tube/Pipe Size |
SAE 100R2 |
NPTF Rigid/Fixed |
NPSMStraight Thread |
JIC 37° Flare Rigid/Fixed |
JIC 37° Flare Adjustable & Female Swivel |
Flareless Compression |
| | -2 |
1/8" |
|
5000 |
5000 |
5000 |
5000 |
|
|
| -4 |
1/4" |
5000 |
4000 |
5000 |
5000 |
4500 |
6000 |
|
| -5 |
5/16" |
4250 |
|
|
5000 |
4000 |
|
|
| -6 |
3/8" |
4000 |
3000 |
4000 |
5000 |
4000 |
6000 |
|
| -8 |
1/2" |
3500 |
3000 |
3500 |
4500 |
4000 |
6000 |
|
| -10 |
5/8" |
2750 |
|
|
3500 |
3000 |
5000 |
|
| -12 |
3/4" |
2250 |
2500 |
2250 |
3500 |
3000 |
4500 |
|
| -14 |
7/8" |
2000 |
|
|
3050 |
2500 |
|
|
| -16 |
1" |
2000 |
2000 |
2000 |
3050 |
2500 |
4000 |
|
| -20 |
1-1/4" |
1625 |
1150 |
1625 |
2500 |
2000 |
|
|
| -24 |
1-1/2" |
1250 |
1000 |
1250 |
2000 |
1500 |
|
|
| -32 |
2" |
1125 |
1000 |
1125 |
1500 |
1150 |
|
|
Dash
Size |
Nominal
Tube/Port
Size |
SAE
100R2 |
O-Ring Face Seal (ORFS)
SAE J1453 |
BSPT / BSPP |
Code 61
Flange
SAE J518 |
Code 62
Flange
SAE J518 |
| Fixed |
Adjustable |
| -2 |
1/8 |
|
|
|
|
5145 |
|
| -4 |
1/4" |
5000 |
6000 |
6000 |
6500 |
|
|
| -5 |
5/16" |
4250 |
6000 |
6000 |
|
|
|
| -6 |
3/8" |
4000 |
6000 |
6000 |
5500 |
|
|
| -8 |
1/2" |
3500 |
6000 |
6000 |
4500 |
5000 |
6000 |
| -10 |
5/8" |
2750 |
6000 |
6000 |
4000 |
|
|
| -12 |
3/4" |
2250 |
6000 |
6000 |
3500 |
5000 |
6000 |
| -14 |
7/8" |
2000 |
6000 |
6000 |
|
|
|
| -16 |
1" |
2000 |
6000 |
5000 |
3000 |
5000 |
6000 |
| -20 |
1-1/4" |
1625 |
4000 |
4000 |
2500 |
4000 |
6000 |
| -24 |
1-1/2" |
1250 |
4000 |
3000 |
2000 |
3000 |
6000 |
| -32 |
2" |
1125 |
|
|
2000 |
3000 |
6000 |
| -40 |
2-1/2" |
|
|
|
2500 |
|
|
| -48 |
3" |
|
|
|
2000 |
|
|
| -56 |
3-1/2" |
|
|
|
500 |
|
|
| -64 |
4" |
|
|
|
500 |
|
|
|