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WORKING PRESSURES - Adaptors, Hose Couplings and Hose Assemblies.

Since many factors influence the pressure at which a hydraulic system will, or will not, perform satisfactorily, maximum working pressures listed below should be used as a guide only and not as a “standard” nor “specification”, nor construed as a “guaranteed minimum.”
Within the fluid power industry, many criteria are used for the determination of pressure capability. Various fibre stresses, minimum yields and design factors are applied, commensurate with total system conditions. Thus, it is impractical to lay down specific allowable working pressures that satisfy all design criteria.
Unless otherwise specified in this document, and given correct working conditions, including, but not limited to, torque setting, assembly, alignment, support, pressures (internal and external), temperature limits, environmental, installation, vibration free, damage free, chemical, cleanliness and regular maintenance and inspection, the following may be used as a guide to maximum working pressure.
For further technical assistance contact RYCO Hydraulics Technical Department or your RYCO Hydraulics distributor.

The Maximum Working Pressure of a Hose Assembly is the lesser rated Working Pressure of the Hose or Tube or End Style (Connector termination). The Maximum Rated Working Pressure of an Adaptor with a combination of Thread / End Styles and sizes, is the Maximum Working Pressure of the least rated end.

BSP BSPT MALE BSPP MALE BSPT MALE
LIVE SWIVEL		 BSPT FEMALE
FIXED		 BSPP FEMALE
SWIVEL
(Crimp Nut)		 BSPP FEMALE
SWIVEL
(Wire Nut)		 BSPP MALE
(O Ring &
Retaining Ring)		 BSPP MALE
(Bonded Seal)
THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE
inch bar psi bar psi bar psi bar psi bar psi bar psi bar psi bar psi
1/8 -02 830 12000 830 12000 700 10150 700 10150 420 6000 500 7250
1/4 -04 830 12000 830 12000 420 6000 700 10150 700 10150 420 6000 500 7250
3/8 -06 700 10150 700 10150 350 5100 700 10150 700 10150 420 6000 500 7250
1/2 -08 700 10150 700 10150 280 4060 600 8700 600 8700 420 6000 420 6000
5/8 -10 600 8700 600 8700 280 4060 500 7250 500 7250 280 4060 350 5100
3/4 -12 600 8700 600 8700 280 4060 420 6000 420 6000 500 7250 280 4060 350 5100
1 -16 420 6000 420 6000 215 3100 350 5100 350 5100 420 6000 215 3100 350 5100
1.1/4 -20 420 6000 420 6000 280 4060 280 4060 420 6000 215 3100 280 4060
1.1/2 -24 420 6000 420 6000 280 4060 280 4060 350 5100 180 280 4060
2 -32 350 5100 350 5100 215 3100 215 3100 215 3100 180 215 3100
2.1/2 -40 215 3100 215 3100 215 3100


NPT NPT MALE NPT MALE
LIVE SWIVEL		 NPT FEMALE
FIXED		 NPSM FEMALE
SWIVEL
(Crimp Nut)		 NPSM FEMALE
SWIVEL
(Wire Nut)
THREAD
SIZE		 DASH
SIZE		MAX. WORKING
PRESSURE		MAX. WORKING
PRESSURE		MAX. WORKING
PRESSURE		MAX. WORKING
PRESSURE		MAX. WORKING
PRESSURE
inch bar psi bar psi bar psi bar psi bar psi
1/8 -02 830 12000 700 10150 700 10150
1/4 -04 830 12000 420 6000 700 10150 700 10150
3/8 -06 700 10150 280 4060 700 10150 700 10150
1/2 -08 700 10150 280 4060 500 7250 500 7250
5/8 -10 600 8700 280 4060 500 7250 500 7250
3/4 -12 600 8700 280 4060 420 6000 420 6000 500 7250
1 -16 420 6000 215 3100 350 5100 350 5100 420 6000
1.1/4 -20 420 6000 280 4060 280 4060 420 6000
1.1/2 -24 420 6000 280 4060 280 4060 280 4060
2 -32 350 5100 215 3100 215 3100 215 3100
2.1/2 -40 215 3100 215 3100

JIC JIC MALE JIC FEMALE
SWIVEL
(Crimp Nut)		 JIC FEMALE
SWIVEL
(Wire Nut)
TUBE
SIZE		 THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE
inch inch bar psi bar psi bar psi
3/16 3/8 -06 830 12000 700 10150
1/4 7/16 -07 830 12000 700 10150
5/16 1/2 -08 700 10150 700 10150
3/8 9/16 -09 700 10150 700 10150
1/2 3/4 -12 700 10150 600 8700
5/8 7/8 -14 600 8700 500 7250
3/4 1.1/16 -17 600 8700 420 6000 500 7250
7/8 1.3/16 -19 500 7250 420 6000 420 6000
1 1.5/16 -21 420 6000 350 5100 420 6000
1.1/4 1.5/8 -26 420 6000 280 4060 420 6000
1.1/2 1.7/8 -30 420 6000 280 4060 280 4060
2 2.1/2 -40 420 6000 215 3100 215 3100
2.1/2 3 -48 215 3100 215 3100
JIS BSPP MALE
60º CONVEX
SEAT		 BSPP FEMALE
SWIVEL
60º CONCAVE SEAT
THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE
inch bar psi bar psi
1/4 -04 830 12000 700 10150
3/8 -06 700 10150 700 10150
1/2 -08 700 10150 600 8700
5/8 -10 600 8700 500 7250
3/4 -12 600 8700 420 6000
1 -16 420 6000 350 5100
JIS
(KOMATSU)		 METRIC FEMALE
SWIVEL
60º CONCAVE SEAT
THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE
mm bar psi
M14 x 1,5 -14 700 10150
M18 x 1,5 -18 700 10150
M22 x 1,5 -22 600 8700
M24 x 1,5 -24 500 7250
M30 x 1,5 -30 420 6000
M33 x 1,5 -33 350 5100
M36 x 1,5 -36 280 4060
M42 x 1,5 -42 280 4060
METRIC DKL & DKOL (LIGHT SERIES)
MALE, FEMALE & FEMALE O RING
TUBE
SIZE		 THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE
mm mm bar psi
6 M12 x 1,5 -12 700 10150
8 M14 x 1,5 -14 700 10150
10 M16 x 1,5 -16 700 10150
12 M18 x 1,5 -18 500 7250
15 M22 x 1,5 -22 420 6000
18 M26 x 1,5 -26 350 5100
22 M30 x 2,0 -30 280 4060
28 M36 x 2,0 -36 215 3100
35 M45 x 2,0 -45 180 2600
42 M52 x 2,0 -52 180 2600
METRIC DKS & DKOS ( HEAVY SERIES)
MALE, FEMALE & FEMALE O RING
TUBE
SIZE		 THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE
mm mm bar psi
6 M14 x 1,5 -12 830 12000
8 M16 x 1,5 -14 700 10150
10 M18 x 1,5 -16 700 10150
12 M20 x 1,5 -20 700 10150
14 M22 x 1,5 -22 700 10150
16 M24 x 2,0 -24 600 8700
20 M30 x 2,0 -30 500 7250
25 M36 x 2,0 -36 420 6000
30 M42 x 2,0 -45 420 6000
38 M52 x 2,0 -52 420 6000
METRIC FRENCH GAZ (ISO)
TUBE
SIZE		 THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE
mm mm bar psi
13,25 20 x 1,5 -20 420 6000
16,75 24 x 1,5 -24 350 5100
21,25 30 x 1,5 -30 280 4060
26,75 36 x 1,5 -36 215 3100
33,50 45 x 1,5 -45 215 3100
42,25 52 x 1,5 -52 215 3100
METRIC FRENCH MILLIMETRIC
TUBE
SIZE		 THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE
mm mm bar psi
20 27 x 1,5 -27 280 4060
22 30 x 1,5 -30 215 3100
25 33 x 1,5 -33 215 3100
28 36 x 1,5 -36 215 3100
30 39 x 1,5 -39 215 3100
35 45 x 1,5 -45 180 2600
ORFS O RING FACE SEAL
TUBE
SIZE		 THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE
inch inch bar psi
1/4 9/16 -09 700 10150
3/8 11/16 -11 700 10150
1/2 13/16 -13 600 8700
5/8 1 -16 500 7250
3/4 1.3/16 -19 500 7250
1 1.7/16* -23 420 6000
1.1/4 1.11/16* -27 280 4060
1.1/2 2* -32 280 4060
SAE SAE 45º FLARE SAE INVERTED
FLARE
TUBE
SIZE		 THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE
inch inch bar psi bar psi
1/4 7/16 -07 700 10150 215 3100
5/16 1/2 -08 700 10150 215 3100
3/8 5/8 -10 700 10150 180 2600
7/16 11/16 -11 180 2600
1/2 3/4 -12 600 8700
5/8 7/8 -14 500 7250
3/4 1.1/16 -17 420 6000
1 1.5/16 -21 420 6000
1.1/4 1.5/8 -26 350 5100
1.1/2 1.7/8 -30 280 4060
2 2.1/2 -40 215 3100
SAE FLANGE CODE 61
SAE FLANGE		 CODE 62
SAE FLANGE		 RYCO CODE 62C
SPECIAL FLANGE
NOM. FLANGE
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE
inch bar psi bar psi bar psi
1/2 -08 420 6000 500 7250 500 7250
5/8 -10 420 6000 500 7250 500 7250
3/4 -12 420 6000 500 7250 500 7250
1 -16 350 5100 420 6000 420 6000
1.1/4 -20 280 4060 420 6000 420 6000
1.1/2 -24 280 4060 420 6000 420 6000
2 -32 215 3100 420 6000 420 6000
2.1/2 -40 215 3100
RYCOLOK
(STAPLE)		 RYCOLOK
MALE & FEMALE		 RYCO SUPERLOK
MALE & FEMALE		 RYCO SUPER-D
MALE & FEMALE
NOMINAL
SIZE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE
DN inch Dash bar psi bar psi bar psi
6 1/4 -06 500 7250
10 3/8 -10 500 7250
12 1/2 -13 420 6000 500 7250
16 5/8 -16 350 5100 500 7250
19 3/4 -20 350 5100 420 6000 500 7250
25 1 -25 350 5100 420 6000 420 6000
31 1.1/4 -32 280 4060 420 6000 420 6000
38 1.1/2 -40 280 4060 350 5100 420 6000
51 2 -50 280 4060 350 5100 420 6000
65 2.1/2 -65 215 3100
UN O RING
(O RING BOSS)		 UN O RING
(O RING BOSS)		 UN O RING
(O RING BOSS)
ADJUSTABLE		 UN O RING
(O RING BOSS)
LIVE SWIVEL
TUBE
SIZE		 THREAD
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE		 MAX. WORKING
PRESSURE
inch inch bar psi bar psi bar psi
1/4 7/16 -07 420 6000 420 6000 300 4350
5/16 1/2 -08 420 6000 420 6000 300 4350
3/8 9/16 -09 420 6000 420 6000 300 4350
1/2 3/4 -12 420 6000 350 5100 300 4350
5/8 7/8 -14 350 5100 280 4060 250 3620
3/4 1.1/16 -17 350 5100 215 3100 215 3100
7/8 1.3/16 -19 350 5100 215 3100 180 2600
1 1.5/16 -21 350 5100 180 2600
1.1/4 1.5/8 -26 215 3100 150 2175 150 2175
1.1/2 1.7/8 -30 215 3100 104 1500
2 2.1/2 -38 180 2600 90 1300
TUBE BITE
TUBE
SIZE		 DASH
SIZE		 MAX. WORKING
PRESSURE
inch bar psi
1/4 -04 420 6000
5/16 -05 420 6000
3/8 -06 420 6000
1/2 -08 350 5100
5/8 -10 350 5100
3/4 -12 350 5100
1 -16 280 4060
1.1/4 -20 215 3100
1.1/2 -24
2 -32

 
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