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Parker Hannifin Corporation
Parflex Division
Ravenna, Ohio
237
Coiled Air Hose,
Fittings
& Accessories
Hydraulic &
Pneumatic
Hose & Fit.
PTFE
Hose &
Fittings
The
rmoplastic
Tu
bing
Truck (Fleet)
Products
Tooling &
Equipment
Hose
Accessories
Technical &
Design
Information
Approvals &
Guides
Alphanumeric
Index
Twin/Multi-Line Separation
The separation length must allow
for the swaging or crimping opera-
tion without damaging the hose.
NOTE
:
If length of separation is specified
fromthe threadedorswivel nut end
of coupling, deduct the cutoff al-
lowance dimension for the specific
style of coupling used. The cutoff
allowance is obtainable from the
hose fitting tables or can be calcu-
lated by subtracting the insertion
depth of the shell from the overall
coupling length.
Position twinned or multi-line
hose assembly so that it lies flat
onworksurfacewithout tendency
to twist or turn.
SET-UP
1
Lightly lubricate the web area
between the hoses. Distribute the
lubricant uniformly along the web
of the assembly to be separated.
Any lightweightoilwill suffice. (SAE
10 or 20) The function of the oil is
to reduce the friction of the knife
blade so that it naturally seeks
the center of the valley formed by
thehoses. Thiseliminates theneed
for the operator to steer the knife.
LUBRICATE
3
NOTE
It is important that the knife blade
be perpendicular to the hose dur-
ing this procedure so that the blade
cuts only the center line of theweb.
EXTREME CARE MUST BE TAKEN
TO AVOID CUTTING THROUGH
THE COVER OF THE HOSES AND
THEREBYEXPOSINGTHEHOSERE-
INFORCEMENT. If this occurs, the
hose assembly must be discarded.
(See sketch A.) If the separation
length is greater than that which
can be accomplished with one con-
tinuous, smooth stroke, then the
procedure should be repeated over
shorter distances always cutting
toward the free end of the hoses.
Measure and mark the length that
the hoses are to be separated.
MEASURE
HOSE TO LENGTH
2
EXTREME CARE MUST BE TAKEN
TO AVOID CUTTING THROUGH THE
COVEROFTHEHOSESANDTHEREBY
EXPOSING THE HOSE REINFORCE-
MENT. If this occurs, the hose as-
sembly must be discarded.
INCORRECT
HANDLING
A
MEASURE
SEPARATION
5
It is suggested that the separation
length be sufficiently long so that
the swaging or crimping operation
canbeaccomplishedwithout riskof
kinkingthehosesor tearingtheweb
whichcouldresult inexposureofthe
hose reinforcement. (See sketch B)
Press themulti-linehoseassembly
firmly and flat against the work
surface with your free hand so that
it does not move. Using a Stanley
trimming knifemodel No. l0-5l5 or
equivalent, draw the knife toward
youwith constant light tomoderate
pressure, and a smooth stroke.
Multiple strokes will be necessary
to separate the hoses.
CUT HOSE
TO LENGTH
4
At the option of the assembler as
dictatedby the installation, it issug-
gested that a nylon lashing strap or
tape be applied at the termination
of the separated length to provide
protection against tearing of the
web or hose covers.
APPLY
TAPE
6
INCORRECT
HANDLING
B
Factory-built assemblies are
available using twin/multi-
line hoses. When field-built
assemblies are preferred,
the following steps must be
taken.