20
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
Parflange ECO 25
Hydraulic Flanging and Flaring Tool
37
˚
Flaring Information for Triple-Lok Fittings
Step 21: Inspect the flare to ensure proper surface finish. Mea-
sure the flare diameter and compare to values in chart
below.
37° Flare Dimensions
Inch
Tube O.D.
(in.)
Metric
Tube O.D.
(mm)
37° Flare
Diameter ØA
(in.)
1/4
6
.340/.360
5/16
8
.400/.430
3/8
10
.460/.490
1/2
12
.630/.660
5/8
15 & 16
.760/.790
3/4
18 & 20
.920/.950
1
25
1.170/1.200
1 1/4
30 & 32
1.480/1.510
1 1/2
38
1.700/1.730
Adjusting the ECO 25 to compensate for
over/undersized flare diameters
If the flare diameter of your ECO 25 tube assembly is not within
the diameter specifications listed, please complete the follow-
ing steps:
• First, check to make sure that the correct flaring pin and die
set are being used for the outside diameter, wall thickness,
and material tubing you are using. Keep in mind that each
Die Set can be used with every wall thickness of that size
tubing and also with both carbon and stainless steel tubing.
However, the flaring pins are specific to the outside diameter
and wall thickness of the tubing.
• Once the tooling and tubing have been verified, the correct
method of increasing or decreasing the diameter of the tube flare
is to alter the flaring pressure used during the flaring process.
• To increase the diameter of a tube flare, repeat the flaring
process as before, but utilize a slightly higher flaring pressure
than noted in the charge on page 15. Continue this process until
the flare diameter is within the specifications listed to the right.
• To decrease the diameter of a tube flare, repeat the flaring
process as before, but utilize a slightly lower flaring pressure
than noted in the chart on page 15. Continue this process until
the flare diameter is within the specifications listed to the right.
