Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
C9
4300
Catalog
Ferulok
®
Flareless Bite Type Fittings
Dimensions and pressures for reference only, subject to change.
V5BU
45
° Straight Thread Elbow
Flareless / SAE-ORB
SAE 080320
VBU
45
° Male Elbow
Flareless / NPTF
SAE 080302
*
Y – Across wrench flats
*
Y – Across wrench flats
GBU
Female Connector
Flareless / NPTF
SAE 080103
TRBU
Tube End Reducer
Tube / Flareless
SAE 080123
TUBE
FITTING
PART #
END SIZE
C1
HEX
(
in.)
L2
(
in.)
Dynamic
Pressure
(
x 1,000 PSI)
1
(
in.)
2
NPTF
-
S -SS
2
GBU
1/8 1/8 - 27 9/16 1.05 5.0 5.0
4
GBU
1/4 1/8 - 27 9/16 1.09 5.0 5.0
4-4
GBU
1/4 1/4 - 18
3/4 1.29 5.0 5.0
5
GBU
5/16 1/8 - 27 9/16 1.08 5.0 5.0
6
GBU
3/8 1/4 - 18
3/4 1.31 5.0 5.0
6-6
GBU
3/8 3/8 - 18
7/8 1.34 5.0 5.0
6-8
GBU
3/8 1/2 - 14 1 1/8 1.59 5.0 5.0
8
GBU
1/2 3/8 - 18
7/8 1.47 5.0 5.0
8-4
GBU
1/2 1/4 - 18
7/8 1.46 5.0 5.0
8-8
GBU
1/2 1/2 - 14 1 1/8 1.69 5.0 5.0
10
GBU
5/8 1/2 - 14 1 1/8 1.77 4.5 4.5
12
GBU
3/4 3/4 - 14 1 3/8 1.89 4.0 4.0
14
GBU
7/8 3/4 - 14 1 3/8 1.86 3.0 3.0
16
GBU
1 1 - 11 1/2 1 5/8 2.13 3.0 3.0
20
GBU
1 1/4 1 1/4 - 11 1/2 2 2.22 2.5 2.5
24
GBU
1 1/2 1 1/2 - 11 1/2 2 3/8 2.23 2.5 2.5
TUBE
FITTING
PART #
END SIZE
C
HEX
(
in.)
L
(
in.)
Q
(
in.)
Dynamic
Pressure
(
x 1,000 PSI)
1
(
in.)
2
(
in.)
-
S -SS
6-4
TRBU
3/8 1/4 1/2 1.61 0.88 6.0 6.0
8-4
TRBU
1/2 1/4 9/16 1.73 1.00 5.0 5.0
8-6
TRBU
1/2 3/8 5/8 1.77 1.00 5.0 5.0
10-6
TRBU
5/8 3/8 11/16 1.86 1.09 5.0 5.0
10-8
TRBU
5/8 1/2 13/16 1.95 1.09 4.5 4.5
12-6
TRBU
3/4 3/8 13/16 1.94 1.16 4.5 4.5
12-8
TRBU
3/4 1/2 13/16 2.03 1.16 4.5 4.5
12-10
TRBU
3/4 5/8 15/16 2.16 1.16 4.5 4.5
14-10
TRBU
7/8 5/8 15/16 2.14 1.16 4.0 4.0
16-8
TRBU
1 1/2 1 1/16 2.05 1.13 4.0 4.0
16-10
TRBU
1 5/8 1 1/16 2.11 1.13 4.0 4.0
16-12
TRBU
1 3/4 1 1/8 2.25 1.13 4.0 4.0
20-16
TRBU
1 1/4 1 1 3/8 2.28 1.16 3.0 3.0
24-12
TRBU
1 1/2 3/4 1 5/8 2.45 1.25 2.0 2.0
24-16
TRBU
1 1/2 
1 1 5/8 2.45 1.25 2.0 2.0
24-20
TRBU
1 1/2 1 1/4 1 7/8 2.45 1.25 2.0 2.0
TUBE
FITTING
PART #
END SIZE
M2
(
in.)
M8
(
in.)
Y
(
in.)
Dynamic
Pressure
(
x 1,000 PSI)
1
(
in.)
2
UN/UNF-2A
-
S -SS
4
V5BU
1/4 7/16 - 20 0.70 1.05 7/16 5.0 5.0
6
V5BU
3/8 9/16 - 18 0.83 1.14 9/16 5.0 5.0
8
V5BU
1/2 3/4 - 16 0.98 1.30 3/4 5.0 5.0
12
V5BU
3/4 1 1/16 - 12 1.27 1.73 1 1/16 4.0 4.0
16
V5BU
1 1 5/16 - 12 1.36 1.86 1 5/16 3.0 3.0
TUBE
FITTING
PART #
END SIZE
M2
(
in.)
N2
(
in.)
Y
(
in.)
Dynamic
Pressure
(
x 1,000 PSI)
1
(
in.)
2
NPTF
-
S -SS
3
VBU
3/16 1/8 - 27 0.64 0.52 7/16 5.0 5.0
4
VBU
1/4 1/8 - 27 0.70 0.64 7/16 5.0 5.0
4-4
VBU
1/4 1/4 - 18 0.81 0.86 9/16 5.0 5.0
5
VBU
5/16 1/8 - 27 0.75 0.66 9/16 5.0 5.0
6
VBU
3/8 1/4 - 18 0.83 0.86 9/16 5.0 5.0
8
VBU
1/2 3/8 - 18 0.98 0.95 3/4 5.0 5.0
10
VBU
5/8 1/2 - 14 1.08 1.17 7/8 4.5 4.5
12
VBU
3/4 3/4 - 14 1.27 1.20 1 1/16 4.0 4.0
14
VBU
7/8 3/4 - 14 1.34 1.30 1 5/16 3.0 3.0
16
VBU
1 1 - 11 1/2 1.36 1.48 1 5/16 3.0 3.0
20
VBU
1 1/4 1 1/4 - 11 1/2 1.45 1.67 1 5/8 2.5 2.5
All “VBU” fittings include a 30° chamfer for sealing with NPSM swivel type fit-
tings (steel only).