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Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
Parflange ECO 25
Hydraulic Flanging and Flaring Tool
Tube End Preparation
Tube end preparation is one of the most critical processes in
obtaining an optimum seal of a flanged or flared tube end con-
nection. Regardless of the tube material, similar guidelines for
tube cut-off, deburring, and cleanliness can help assure the tube
to fitting connection remains leak free.
Tube Cutting
• It is critical that the tube be cut squarely /- 1° in order
to assure the proper tube to fitting connection. A tube end
which is not cut squarely may result in a flange or flare which
is not circular, potentially causing leakage.
• When cutting tube in preparation for flanging or flaring, a saw
which utilizes a toothed blade is recommended. This type of
tool will assure that the tube end is not hardened from exces-
sive heat or cold working of material.
Recommended
Low speed Circular Saw, Hacksaw
Not Recommended
Rotary Tube Cutter, Abrasive Saw
Tube Deburring
• Deburring the inside and outside diameter of the tube end is
necessary to assure the tube fits properly inside the flange
or flare sleeve. In addition, proper deburring of the tube end
is necessary to form a flanged or flared tube end which is
free of imperfections that may create a leak path between
the tube and fitting.
Improper Cut
Proper Cut
Samples of improper and proper cuts on steel tube
