Step 4: Preparing the Step 5: Fluxing Step 7: Removing flux
TRUCK HOSE SPECIAL
Lifesaver fitting for braz- CAUTION
It is necessary to remove
ing
Cover the counterbore,
ring, outer hex and threads
Never heat the parts to a
residual flux from the area
TY &
Clean the nipple and tube
of the Lifesaver nipple and
bright red color.
since it is corrosive and
end thoroughly. Place the
the outside of the tube with
presents an unclean
tube into the counterbore
water soluble flux.
When the silver alloy melts,
appearance and condition.
(it should fit freely into it).
the flux will draw it
Simply rub the surface
Measure the diameter of
throughout the joint and a
using hot water and a wire
the counterbore to deter-
small fillet of silver alloy will
brush. The water should be
appear around the tube.
PRESSURE HOSE LOW & MEDIUM
mine the braze ring size at least 120ºF or hotter to
needed. At this point, you
When this happens, the
be truly effective inside and
have the option of selecting
braze is completed.
out.
a ready-made Eaton braze
Remove the heat source
ring or making a ring for the
and allow the fitting to cool
Step 8: Hose assembly
application from bulk silver
for five to ten seconds.
braze wire.
Using pliers, place the fit-
To determine the required
ting into water until it is
amount of new hose,
For quick, easy assembly,
completely cool.
measure the distance from
HIGH PRESSURE HOSE
Eaton offers the following
Step 6: Brazing
the scribe mark on the tube
size range of FF9075 braze
Place the tube assembly
(refer to Step 1) to the
rings:
into a vise. Place the nipple
shoulder hex of the
PART TUBE SIZE
with its braze ring over the CAUTION
Lifesaver nipple. Add this
NUMBER O.D.
tube. Light the brazing
measurement to the
Steam may be directed
mm in.
torch and adjust the flame
Lifesaver “D” dimension
through the fitting ends. To
FF9075-19 6,4 .25
so that the base is blue
found in the “Fittings” sec-
prevent burns, handle the
FF9075-06 9,7 .38
with orange “feather-like
tion of the Eaton Hose &
flicks” at the end. Try to
fitting carefully! Hot water
Reusable Fittings Catalog.
FF9075-74 12,7 .50
heat both the nipple and
will facilitate flux removal.
For each Lifesaver fitting,
HOSE FITTINGS
FF9075-08 16,0 .63
the tube uniformly so they
subtract this sum from the
FF9075-09 19,1 .75
both reach the brazing tem-
fabrication length previously
FF9075-86 25,4 1.00 perature at the same time. recorded. When using
FF9075-87 31,8 1.25
Don’t overheat the thin sec-
Eaton fittings other than the
FF9075-88 38,1 1.50
tion. As the temperature
Lifesaver type, subtract the
increases, the flux will
appropriate “D” dimension
To assemble, simply place
undergo several changes:
found in the catalog. Cut
the appropriate size Eaton
FF9075 braze ring into the
At 212ºF the water
the hose to this length and
TUBE FITTINGS
ADAPTERS &
counterbore of the
boils off.
install both fittings.
Lifesaver nipple. At 600ºF the flux
Align the scribe marks to
To make the braze ring,
becomes white and puffy
establish the phase angle.
multiply the diameter of the
and starts to “work”
Spray paint the brazed
counterbore by 3 to deter-
(snow balling).
joints to prevent rusting.
mine the length of silver At 800ºF it lays against
wire needed. For example, the surface and has a
ASSEMBL ACCESSORIES &
if the counterbore diameter milky appearance.
measures
3
/
4
of an inch, a
At 1100ºF it is completely
Y INSTRUCTIONS
2
1
/
4
- inch length of wire
clear and active and has
would be needed (
3
/
4
" x 3 =
9
the appearance of water.
/
4
" or 2
1
/
4
").Now cut off a
At this point, a bright
piece of silver wire just
metal surface will be
short of 2
1
/
4
inches, so it is
apparent underneath.
about 2
3
/
16
inches long.
Using needle nose pliers,
The silver wire melts at
form the wire into a ring
1125ºF and flows at
EQUIPMENT HOSE ASSEMBL
and, after wiping it off,
1145ºF.
place the ring into the
counterbore of the
Lifesaver nipple.
Y
APPENDICIES
www.EatonProducts.com
310 EATON Aeroquip Fluid Conveyance Products A-HOOV-MC001-E1 December 2007
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