H11
Parker Hannifin Corporation
Fluid System Connectors
Otsego, Michigan
Catalog 3501E
Inverted Flared Fittings
Applicable Tube
Tube Material:
Copper, brass, aluminum,
welded steel hydraulic
tubing that can be flared.
Tube O.D.:
1/8, 3/16, 1/4, 5/16, 3/8, 1/2, 5/8,
3/4
Built to resist mechanical pullout this fitting can be assembled and
disassembled repeatedly. Listed with Underwriter’s Laboratories for
flammable liquid and gas. Meets functional requirements of SAE J512.
Materials of Construction
Fittings:
Brass
Nuts:
Brass and Zinc Chromate
Steel
Nomenclature
Example: 48ifhd-4-2
Attribute:
48
half union
if
inverted flare
hd
heavy duty
6
3/8
tube o.d..
4
1/4
pipe thread
Specifications
Temperature
Range
From -65° to +250°F
Operating
Fluid:
Water, Air, Inert and
non-combustible gasses
compatible with materials
of construction
Note:
For other types of fluids
or gasses, please consult
factory
Assembly Instructions
1.
Cut tubing squarely and clean tube end thoroughly to remove burrs.
2.
Place nut onto tube. Place threaded end of nut toward end of tube.
3.
On thin wall copper, welded or brazed tubing, use double flare to prevent pinch-off or
cracked flares.
4.
Clamp tube flare between nut and flare seat of body by screwing nut on finger-tight. Tighten
with a wrench an additional 1/4 turn for a metal-to-metal seal.
Note: The seat dimensions are predicated on practical threading limitations and use of these
fittings with double flared tubing.
Pressure range
PSI
Tube
O.D. (in.)
Tube
Wall (in.)
2800
1/8
.030
1900
3/16
.030
1400
1/4
.030
1200
5/16
.032
1000
3/8
.032
750
1/2
.032
650
5/8
.035
550
3/4
.035