Page 439 - 4300 Catalog Cover.pdf

4300 Catalog Assembly / Installation
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
T29
5. Tighten nut 1 ½ turns if using the fitting body (1 ¼ turns if
using the hardened pre-assembly tool). The tube must not
turn with the nut. The stop edge in the progressive ring
limits over tightening by sharply increasing the tightening
torque.
Pre-set Inspection
To inspect the pre-set, remove the nut and tube from the fitting
and check if a visible collar fills the space completely in front of
first cutting edge. If not, tighten slightly more. It does not matter
if ring can be rotated on tube end.
Pre-set Using EO-Karrymat, EOMAT III,
Hydra-Tool or Hyferset
When pre-setting EO fittings larger than sizes 18 mm, it is rec-
ommended that a hydraulic tool be used. The EO-Karrymat,
Hydra-Tool or theHyferset (shown inFig.T41) are recommended
for low to medium volume production.
For highvolumeproduction, it is recommended that theEOMAT III,
shown inFig.T42, beused for pre-setting.The requiredoperating
pressure depends on the tube type, material and tube dimen-
sions, and is automatically selected by a microprocessor.
For full instruction on the use of these hydraulic tools, please
refer to the Bulletins indicated below:
• EO-Karrymat – Bulletin 4044-T1/UK/DE/FR/T
• EOMAT III – Bulletin 4043-1/GB
• Hyferset - Bulletin 4393-B1
• Hydra-Tool – Bulletin 4392-B10
Installation
To install the pre-set tube assembly to the fitting body, wrench-
tighten nut to wrench resistance (light wrenching). From this
position, tighten nut another 1/4 turn or 1 1/2 flats of the nut.
Another wrench must be used to prevent movement of the fit-
ting body.
Assembly with Support Sleeve (VH)
If the tube wall thickness is small relative to the tube O.D., this
may lead to tube collapse.As a rule, the tube collapse (reduction
in diameter) should not exceed 0.3 mm for tubes up to 16 mm
O.D. and 0.4 mm for tubes from 18 mm O.D. and above.
When assembling thin walled tube, there is insufficient cross
sectional rigidity where the progressive ring cuts. This will have
a detrimental effect on the sealing efficiency. For this, internal
support sleeves (VH) are available which are inserted in the
tube to prevent tube collapse and also increase the cross-sec-
tional rigidity.
Fig. T41 – Hyferset tool
Fig. T42 – EOMAT III
EO Assembly