Parker Hannifin Corporation
Fluid System Connectors
Otsego, Michigan
I5
Catalog 3501E
Dubl-Barb
®
Fittings
L
D
C HEX
Male Connector 28
Part
No.
tube
o.d.
tube
i.d.
pipe
thread
c
hex
l
flow
dia. d
28-5/32-2
5/32
.096
1/8
7/16
.84
.062
28-4-1
1/4
.170
1/16
3/8
.93
.120
28-4-2
1/4
.170
1/8
7/16
.97
.120
28-4-4
1/4
.170
1/4
9/16
1.09
.120
28-4-10
x32*
1/4
.170
10-32
1/4
.71
.093
28-6-2
3/8
.250
1/8
7/16
1.00
.187
28-6-4
3/8
.250
1/4
9/16
1.13
.187
28-8-4
1/2
.375
1/4
9/16
1.25
.312
28-8-6
1/2
.375
3/8
11/16
1.28
.312
28-8-8
1/2
.375
1/2
7/8
1.44
.312
*
Straight thread
Adapter Tee 220
Part
No.
tube
o.d.
tube
i.d.
pipe
thread
l
N
flow
dia. d
220-4-2
1/4
.170
1/8
1.50
1.00
.120
Union Tee 224
Part
No.
tube
o.d.
tube
i.d.
l
m
flow
dia. d
224-5/32
5/32
.096
1.00
.50
.062
224-4
1/4
.170
1.25
.63
.120
224-6
3/8
.250
1.38
.69
.187
224-8
1/2
.375
1.63
.81
.312
Union Tee 224
Combination Sizes
Part
No.
tube
o.d.
tube
i.d.
l
m n flow
dia. d
flow
dia.
d1
224-4-4-5/32 1/4
x5/32 .170x.096 1.25 .63 .50 .120 .062
224-6-6-5/32 3/8
x5/32 .250x.096 1.38 .69 .50 .187 .062
224-6-6-4
3/8
x1/4 .250x.170 1.38 .69 .62 .187 .120
224-8-8-4
1/2
x1/4 .375x.170 1.62 .81 .65 .312 .120
224-8-8-6
1/2
x3/8 .375x.250 1.62 .81 .69 .312 .187
Union Elbow 225
Part
No.
tube
o.d.
tube
i.d.
m
flow
dia. d
225-5/32
5/32
.096
.50
.062
225-4-4
1/4
.170
.63
.120
225-6-6
3/8
.250
.63
.187
225-8-8
1/2
.375
.81
.312
Union Elbow 225
Combination Size
Part
No.
tube
o.d. 1
tube
o.d. 2
tube
i.d. 1
tube
i.d. 2 m1 m2 flow
dia. d1
flow
dia. d2
225-4-5/32 1/4
5/32 .170 .096 .63 .50 .120 .062
Gauge Tee 228
Part
No.
tube
o.d.
tube
i.d.
pipe
thread
l
m
n
flow
dia. d
228-4-2
1/4
.170
1/8
1.91
.66
.44
.120
D
L
M
N
D
1
D M
M
D1
D2
M1
1
2
M2
N
D
L
L
D
L
M
M
D
M
L
N
D
N
M
D
M
M
1 2
Male Elbow 229
Part
No.
tube
o.d.
tube
i.d.
pipe
thread
m
n
flow
dia. d
229-5/32-2 5/32
.096
1/8
.56
.63
.062
229-4-1
1/4
.170
1/16
.62
.60
.120
229-4-2
1/4
.170
1/8
.69
.63
.120
229-4-4
1/4
.170
1/4
.72
.72
.120
229-6-2
3/8
.250
1/8
.69
.69
.187
229-6-4
3/8
.250
1/4
.75
.75
.187
229-8-4
1/2
.375
1/4
.94
.74
.312
229-8-6
1/2
.375
3/8
.94
.81
.312
90
° Elbow Barb
Adapter 229
Part
No.
tube
o.d. 1
tube
i.d. 1
tube
o.d. 2
tube
i.d. 2
pipe
thread m flow
dia. d
229-4-5/32-2 5/32
.096
1/4
.170
1/8
.78 .062