Parker Hannifin Corporation
Fluid System Connectors
Otsego, Michigan
I4
Catalog 3501E
Dubl-Barb
®
Fittings
Bulkhead Union 22CABH
Tube to Compress-Align
Part
No.
tube
o.d.
tube
i.d.
CA
tube
st.
thd.
c
hex
p
max l m
flw
dia.
d
BkhD
HOLE
DIA.
22
CABH-4-4 1/4 .170 1/4 5/16-24 7/16 .219 1.53 .78 .120 5/16
22
CABH-6-6 3/8 .250 3/8 3/8-24 9/16 .375 1.87 1.00 .187 3/8
L
D
C HEX
L
D
C HEX
L
C Hex
D
2 1
L
M
D
C HEX
P
L
M
C
L
C
2 1
L
M
D
L
M
D N
L
M
D
P
C HEX
L
M
D
C HEX
Plug 20
Part
No.
tube
o.d.
tube
i.d.
c
dia.
l
m
20-4
1/4
.170
.290
.56
.41
20-6
3/8
.250
.390
.68
.44
20-8
1/2
.377
.577
.81
.56
Plug Adapter 20
Part
No.
tube
o.d. 1
tube
i.d. 1
tube
o.d. 2
tube
i.d. 2
c
DIA.
l
20-4-5/32
5/32
.096
1/4
.170
.290
.65
Union 22
Part
No.
tube
o.d.
tube
i.d.
l
m
flow
dia. d
22-5/32
5/32
x5/32 .096x.096
.59
.28
.062
22-4
1/4
x1/4
.170
x.170
.84
.41
.120
22-6
3/8
x3/8
.250
x.250
.94
.44
.187
22-8
1/2
x1/2
.375
x.375
1.19
.56
.312
Union Reducer 22
Part
No.
tube
o.d.
tube
i.d.
l
m
n
flow
dia. d
22-4-5/32 1/4
x5/32 .170x.096
.72
.41
.28
.062
22-4-6
1/4
x3/8 .170x.250
.88
.44
.41
.120
22-4-8
1/4
x1/2 .170x.375 1.06
.56
.41
.120
22-6-8
3/8
x1/2 .250x.375 1.06
.56
.44
.187
Bulkhead Union 22BH
Part
No.
tube
o.d.
tube
i.d.
ST.
thd.
c
hex
p
max.
l
m
flow
dia.
d
blkhd
hole
dia.
22
BH-4-4 1/4 .170 5/16-24 7/16 .219 1.38 .78 .120 5/16
22
BH-6-6 3/8 .250 3/8-24 7/16 .375 1.63 1.00 .187 3/8
Union 22CA
Tube to Compress-Align
Part
No.
tube
o.d.
tube
i.d.
CA
tube
c
hex
l
m flow
dia. d
22
CA-4-4 1/4
.170
1/4
7/16
1.15
.41
.120
Female Connector 26
Part
No.
tube
o.d.
tube
i.d.
pipe
thread
c
hex
l
flow
dia. d
26-5/32-2
5/32
.096
1/8
1/2
.79
.062
26-4-2
1/4
.170
1/8
1/2
.91
.120
26-6-2
3/8
.250
1/8
1/2
.93
.187
26-6-4
3/8
.250
1/4
11/16
1.06
.187
Male Connector 27
Part
No.
tube
o.d.
tube
i.d.
straight
thread
c
hex
l
flow
dia. d
27-1*
1/8
.062
10-32
1/4
.61
.052
27-2*
1/4
.125
10-32
1/4
.74
.093
*
For vinyl tubing only.
Barb-to-Pipe Adapter 28
Part
No.
tube
o.d. 1
tube
i.d. 1
tube
o.d. 2
tube
i.d. 2
pipe
thd.
c
hex
l
flow
dia. d
28-4-5/32-2 5/32 .096 1/4 .170 1/8
7/16 1.07 .062