Pressure Ratings for Steel Fittings

The information below is based on limited laboratory test data and is intended only as an approximate guide. The figures shown are maximum operating pressures in psi, 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 pressure rating must be adjusted for any change in adapter material. The maximum pressure for the adapter or tube fitting must be lower of the chosen mating end types.

Steel Pipe Fittings

Dash Size	Nominal Pipe Size ( I.D.)	SAE 100R2 Max. Wkg. Pressure	NPTF Male Pipe	NPTF Female Pipe	NPSM Female Pipe Swivel
-02	1/8"		10000 psi	5000 psi	6000 psi
-04	1/4"	5000 psi	9500 psi	4500 psi	5000 psi
-05	5/16"	4250 psi
-06	3/8"	4000 psi	8000 psi	3500 psi	4000 psi
-08	1/2"	3500 psi	6000 psi	3500 psi	3500 psi
-10	5/8"	2750 psi
-12	3/4"	2250 psi	5000 psi	3000 psi	3500 psi
-14	7/8"	2000 psi
-16	1"	2000 psi	4000 psi	2500 psi	3000 psi
-20	1-1/4"	1625 psi	3000 psi	2000 psi	2000 psi
-24	1-1/2"	1250 psi	2000 psi	1500 psi	1500 psi
-32	2"	1125 psi	2000 psi	1,400	1500 psi

North American (SAE) Tube Fittings

Dash Size	Nominal Tube Size (O.D.)	SAE 100R2 Max. Wkg. Pressure	JIC 37° Flare Male	JIC 37° Flare Female Swivel	Flareless Compression
-02	1/8"
-04	1/4"	5000 psi	8500 psi	5500 psi	6000 psi
-05	5/16"	4250 psi	8500 psi	5000 psi
-06	3/8"	4000 psi	7000 psi	4000 psi	6000 psi
-08	1/2"	3500 psi	6000 psi	4000 psi	6000 psi
-10	5/8"	2750 psi	5500 psi	3000 psi	5000 psi
-12	3/4"	2250 psi	4000 psi	3000 psi	4500 psi
-14	7/8"	2000 psi	4000 psi	3000 psi
-16	1"	2000 psi	3500 psi	2500 psi	4000 psi
-20	1-1/4"	1625 psi	3500 psi	2000 psi
-24	1-1/2"	1250 psi	2000 psi	1500 psi
-32	2"	1125 psi	1,250	1,250

O-Ring Fittings

Dash Size	Nominal Port Size	SAE 100R2 Max. Wkg. Pressure	Straight Thread ORB Male	Straight Thread ORB Male Adj.	Straight Thread ORB Female	Face Seal (ORFS) Male	Face Seal (ORFS) Female Swivel
-04	1/4"	5000 psi	7500 psi	4500 psi	4500 psi	9000 psi	9000 psi
-05	5/16"	4250 psi	7500 psi	3500 psi	3500 psi
-06	3/8"	4000 psi	7500 psi	4000 psi	3500 psi	9000 psi	9000 psi
-08	1/2"	3500 psi	7500 psi	4000 psi	3000 psi	9000 psi	8000 psi
-10	5/8"	2750 psi	7500 psi	4000 psi	2500 psi	9000 psi	8000 psi
-12	3/4"	2250 psi	5000 psi	3500 psi	1800 psi	6000 psi	6000 psi
-14	7/8"	2000 psi	5000 psi	3000 psi	1700 psi
-16	1"	2000 psi	4500 psi	2500 psi	1600 psi	6000 psi	6000 psi
-20	1-1/4"	1625 psi	4500 psi	2000 psi	1500 psi	4500 psi	4500 psi
-24	1-1/2"	1250 psi	3500 psi	2000 psi	1500 psi	4000 psi	4000 psi
-32	2"	1125 psi	2000 psi

Four-Bolt Flanges

Dash Size	Nominal Port Size	SAE 100R2 Max. Wkg. Pressure	Code 61 Flange	Code 62 Flange
-04	1/4"	5000 psi
-05	5/16"	4250 psi
-06	3/8"	4000 psi
-08	1/2"	3500 psi	5000 psi	6000 psi
-10	5/8"	2750 psi
-12	3/4"	2250 psi	5000 psi	6000 psi
-14	7/8"	2000 psi
-16	1"	2000 psi	5000 psi	6000 psi
-20	1-1/4"	1625 psi	4000 psi	6000 psi
-24	1-1/2"	1250 psi	3000 psi	6000 psi
-32	2"	1125 psi	3000 psi	6000 psi

Metric Compression Tube Fittings

Nominal Tube O.D.	DIN 2353 LL Extra Light Series	DIN 2353 L Light Series	DIN 2353 S Heavy Series
4 mm	1500 psi
6 mm	1500 psi	3750 psi	9450 psi
8 mm	1500 psi	3750 psi	9450 psi
10 mm	1500 psi	3750 psi	9450 psi
12 mm	1500 psi	3750 psi	9450 psi
14 mm			9450 psi
15 mm		3750 psi
16 mm			6000 psi
18 mm		2400 psi
20 mm			6000 psi
22 mm		2400 psi
25 mm			6000 psi
28 mm		1500psi
30 mm			3750 psi
35 mm		1500 psi
38 mm			3750 psi
42 mm		1500 psi

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