Parker Hannifin Corporation
Fluid System Connectors
Otsego, Michigan
E16
Catalog 3501E
Vibra-Lok Fittings
Applicable Tube
Tube
Material:
Copper, aluminum, steel
(
Bundy), Stainless Steel, Glass
Tube O.D.:
1/8, 3/16, 1/4, 5/16, 3/8, 1/2, 5/8, 3/4
Fitting provides a positive reliable seal under vibration conditions,
mechanical shock or tube movement. The sleeve cushions the tubing
permitting the tube to flex back and forth in the fitting. Positive nut stop
bottoms nut on body requiring only visual inspection.
SAE J1926 straight threads and NPTF pipe threads are standard.
Optional threads include ISO 6149 straight threads and British pipe
threads.
Materials of Construction
Fitting Bodies:
Brass
Nuts:
Brass
Sleeves:
Buna N, Fluorocarbon
Nomenclature
Example: 68VLV-4-2
Attribute:
68
Male Connector
vl
Vibra-Lok
v
Fluorocarbon
Sleeve
4
1/4" (4/16)
Tube O.D.
2
1/8" (2/16)
Pipe Thread
Assembly Instructions
1.
Cut the tube cleanly and squarely removing all burrs.
2.
Slip tube nut and sleeve over tube.
3.
Insert tubing in fitting body as far as it will go and tighten nut until stop is reached. The elastic
sleeve ordinarily will extrude slightly around the tube at the end of the nut. This extrusion
further aids in isolating the tube from the nut.
Assembly Instructions for Higher Pressure Applications
4.
Consult pressure chart to determine if tubing should be belled for your particular application.
5.
Slip the nut and sleeve over tubing. The sleeve should be positioned near end of tubing just
behind the surface to be belled.
6.
Bell tubing with standard 45° flaring tool or 90° punch. The size of bell should be
approximately that shown.
Specifications
Operating
Fluid:
Water, air, gasoline, oil,
diesel fuel, lubricants
Note:
For other types of fluids
or gasses, please consult
factory
Temperature Range
-15
° to +450°F
With Fluorocarbon sleeve.
Sleeve is markedwith red
stripe
-30
° to +275°F
With Buna N Sleeve. Sleeve
is markedwith green stripe
Pressure chart
CONdITION
TuBE
O.d.
TuBE NOT
BELLEd
TuBE BELLEd
OR FLAREd
STATIC
PRESSuRE
3/16"
1/4"
5/16"
3/8"
1/2"
5/8"
500
500
450
350
200
1000
1000
900
700
500
400
MINOR
SuRGES
ANd/OR
VIBRATIONS
3/16"
1/4"
5/16"
3/8"
1/2"
5/8"
400
400
325
225
150
800
800
700
500
375
300
SEVERE
VIBRATIONS
OR SHOCK
3/16"
1/4"
5/16"
3/8"
1/2"
5/8"
300
300
225
175
100
600
600
500
400
250
100
In high pressure applications and sizes larger
than 1/2" O.D., the tube end should be belled
or flared.