Page 426 - 4300 Catalog Cover.pdf

4300 Catalog Assembly / Installation
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
T16
Overflanged assembly
Underflanged assembly
Fig. T20 – Overflanging and Underflanging
Over-flanging will result in tube nut interference, as well as thin-
ning of the flange tube end. Under-flanging reduces the contact
area for sealing against the O-ring in the fitting.
Advantages of Parflange process
There are numerous advantages to using the Parflange process
over the braze or weld process:
• The Parflange process is several times faster than the braz-
ing or welding methods. For instance, the 1025 and 1040
models produce flanges at a rate of 9 to 12 times the speed
of comparable induction brazing.
• The Parflange process does not require any special pre- or
post-flange cleaning of the tube and sleeve.
• Unlike brazing, the Parflange process does not require any
flux, braze alloy, post braze cleaner or rust inhibitor. An en-
vironmentally safe lubricant applied to the flanging pin is the
only additive associated with the Parflange.
• The Parflange process is inherently safe. It does not require
open flame or any form of heating. Additionally, there is no
emission of hazardous fumes, as is typical with welding and
brazing.
• The Parflange process uses only a fraction of the energy
needed for welding or brazing.
• The Parflange process accommodates the use of plated
components (i.e., tube and sleeve), thus eliminating the need
to electroplate assemblies after fabrication.
• The Parflange process eliminates the potential for leaks at
the braze or weld joint.
• TheParflangeprocess produces aburnished sealing surface,
typicallymuch smoother than the 125micro-inch requirement
of SAE J1453.
Brazing
Brazing is the other method of attaching the sleeve to the tube
end. This process can be accomplished by using a multi-flame
torch, as shown in Fig. T21, or an induction brazing unit. During
the heating process, the pre-formed braze ring or wire-fed filler
material is melted between the tube O.D. and the sleeve I.D.,
creating a strong bond between the two.
Fig. T21 – Multi-flame torch brazing
Brazing Steps:
1. Determine the tube length allowance using Table T13.
Fig. T22 – Tube length allowance
Table T13 – Tube length allow-
ance
Seal-Lok Assembly
Nominal Tube O.D. A
(in.) Inch Metric
1/4 6 0.04
3/8 8, 10 0.04
1/2 12 0.04
5/8 14, 15, 16 0.06
3/4 18, 20 0.06
1 22, 25 0.06
1 1/4 28, 30, 32 0.06
1 1/2 35, 38 0.06
Dimensions and pressures for reference only, subject to change.