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Maximum Operating Pressures

Carbon Steel Fittings and Adapters

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
National Pipe Tapered
Fuel (NPTF)
National Pipe Straight
Mechanical (NPSM)
JIC 37 Flare Hydraulic
SAE J514
Flareless
Compression
SAE J514
Male Female Female Swivel   Male   Female Swivel
-02 1/8"   10000 5000 6000      
-04 1/4" 5000 9500 4500 5000 8500 5500 6000
-05 5/16" 4250       8500 5000  
-06 3/8" 4000 8000 3500 4000 7000 4000 6000
-08 1/2" 3500 6000 3500 3500 6000 4000 6000
-10 5/8" 2750       5500 3000 5000
-12 3/4" 2250 5000 3000 3500 4000 3000 4500
-14 7/8" 2000       4000 3000  
-16 1" 2000 4000 2500 3000 3500 2500 4000
-20 1-1/4" 1625 3000 2000 2000 3500 2000  
-24 1-1/2" 1250 2000 1500 1500 2000 1500  
-32 2" 1125 2000 1400 1500 1250 1250  
 
Dash
Size

Nominal
Tube/
Port
Size

SAE
100R2
Straight Thread O-Ring (ORB)
SAE J1926-1
O-Ring Face Seal (ORFS)
SAE J1453
Code 61
Flange
SAE J518
Code 62
Flange
SAE J518
  Male   Male Adj. Female   Male   Female Swivel
-04 1/4" 5000 7500 4500 4500 9000 9000    
-05 5/16" 4250 7500 3500 3500        
-06 3/8" 4000 7500 4000 3500 9000 9000    
-08 1/2" 3500 7500 4000 3000 9000 8000 5000 6000
-10 5/8" 2750 7500 4000 2500 9000 8000    
-12 3/4" 2250 5000 3500 1800 6000 6000 5000 6000
-14 7/8" 2000 5000 3000 1700        
-16 1" 2000 4500 2500 1600 6000 6000 5000 6000
-20 1-1/4" 1625 4500 2000 1500 4500 4500 4000 6000
-24 1-1/2" 1250 3500 2000 1500 4000 4000 3000 6000
-32 2" 1125 2000         3000 6000

 

Metric Compression Tube Fittings

Nominal
Tube O.D.
DIN 2353 LL Extra Light Series DIN 2353 L Light Series DIN 2353 S Heavy Series
Thread MWP Thread MWP Thread MWP
4 mm M8x1.0 1500        
6 mm M10x1.0 1500

M12x1.5

3750 M14x1.5 9450
8 mm M12x1.0 1500 M14x1.5 3750 M16x1.5 9450
10 mm M14x1.0 1500 M16x1.5 3750 M18x1.5 9450
12 mm M16x1.0 1500 M18x1.5 3750 M20x1.5 9450
14 mm         M22x1.5 9450
15 mm     M22x1.5 3750    
16 mm         M24x1.5 6000
18 mm     M26x1.5 2400    
20 mm         M30x2.0 6000
22 mm     M30x2.0 2400    
25 mm         M36x2.20 6000
28 mm     M36x2.0 1500psi    
30 mm         M42x2.0 3750
35 mm     M45x2.0 1500    
38 mm         M52x2.0 3750
42 mm     M52x2.0 1500    

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