Parker Hannifn Corporation
Parker Brass Products Division
Otsego, Michigan
Catalog 3501E
General Technical
N3
N
Tubing Compatibility Chart
Diesel Fuel FL
GPH Hose
SAE J1402
TFE
FEA
PFA
SAE 45 Flare
Inverted Flare
Compression
Compress-Align
Metru-Lok
Poly-Tite
®
Hi-Duty Fitting
Dubl-Barb
®
Prestolok
Prestolok II
Microlok
Flow Controls
Prestomatic
PTC
Cartridges
Air Brake-AB
Air Brake-NTA
®
Transmission
Air Brake Hose Ends
Vibra-Lok
Hose Barb
Fitting Line
Copper
Aluminum
Steel
Polyethylene E
Polyethylene FRPE
Polypropylene PP
Polyurethane U
Polyurethane HU
Polyurethane LU
Vinyl
Nylon SAE J844
Nylon N
Nylon PAT
Nylon NR
† † †
†
† †
† † †
* *
*
* * *
*
*
**
*
*
* * * * * *
++
++
Ratings are based on static pressure conditions
* Tube support is recommended
** Clamp required
++ Brass sleeve recommended
† Plastic sleeve and brass tube support is recommended
Every hydraulic, pneumatic and lubrication system requires some form
of tube line fabrication and ftting installation for completion. Proper
fabrication and installation are essential for the overall effciency, leak
free performance, and general appearance of any system.
Start by planning ahead. After sizing the tube lines and selecting the
appropriate style of ftting, consider the following in the design of your
system:
1. Accessibility of joints
2. Proper routing of lines
3. Adequate tube line supports
4. Available fabricating tools
Routing of Lines
Routing of lines is probably the most diffcult yet most signifcant of
these system design considerations. Proper routing involves getting a
connecting line from one point to another through the most logical path.
Always try to leave ftting joints as accessible as possible. Hard to reach
joints are hard to assemble and tighten properly. Inaccessible joints are
also more diffcult and time consuming to service.
The most logical path should have the following characteristics:
• Avoid excessive strain on joint —
A strained joint will eventually
leak. (See Figures A14 through A21.)
• Allow for expansion and contraction —
Use a “U” bend or a hose in
long lines to allow for expansion and contraction. (See Figure A22.)
Tube Line Fabrication Guide for Leak Free Systems