Page 133 - 4300 Catalog Cover.pdf

F9 Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
EO and EO-2 Metric Bite Type Fittings
Catalog 4300
• Finish — Steel EO fittings have a zinc clear Chromium-6
Free finish. This finish provides good corrosion protec-
tion.
• Silver Plated Nuts — Stainless steel tube nuts are pre-
lubricated with silver plated threads (size 15L-42L, 12S-
38S). Thread galling is eliminated and assembly torque is
reduced as much as 40 percent. This increases the speed
and efficiency for stainless steel fitting assembly.
• Availability — EO fittings are available as standard in over
thirty different configurations, and asmany as twenty-seven
different size combinations in some configurations.
• Configurations — Popular configurations for EO fittings
are shown in the Visual Index. Other configurations can be
manufactured on request.
EO-2 Fitting System —
Introduction
Design and Construction
Fig. F3 — EO-2: Fitting body and functional nut
TheEO-2highpressure tube fitting generation is themost recent
development of theTubeFittingDivisionEurope.Itwas introduced
in an effort to eliminate leakage in all fluid systems.
The common feature of all EO-2 fittings is elastomeric seals on
all joints. This assures leakfree operation without retightening
—even under severe working conditions.Another breakthrough
in bite-type technology is the simple assembly and cost-saving
handling of the unique EO-2 Functional Nut.
EO-2 is a truemetric designaccording to 24° bite-type standards
such as: ISO 8434-1, DIN 2353 or DIN 3861. It covers all three
series (LL, L and S) of the broad EO tube fitting program.
This resulted inagreat acceptancewithequipmentmanufactures
that are targeting an absolute leakfree systems without sacrific-
ing the convenience of using metric bite type fittings.
Fig. F4 — EO-2: The metallic support of the sealing ring acts just
like an integrated preassembly tool.
Elastomeric Sealing
The elastomeric seal assures a hermetically sealed tube joint. It
is located in between the inner cone of the fitting body and the
tube surface, thus blocking the only possible leak path. Due to
its large cross-section, the seal effectively compensates for all
manufacturing tolerances on tube and fitting cone.
The sealing effect is pressure supported which makes the
EO-2 fitting suitable for high pressure applications. The static
compression also eliminates air-ingress into the fluid system at
underpressure conditions.
Elastomerically sealedEO-2 fittings donot requireany retighten-
ing even in heavy-duty applications. Seal extrusion is prevented
by proper housing without gaps or dead volume.The sealing lip
is bonded to a metallic support ring.
Standard Material Specifications
Steel fittings:
EO-2 tube fittings – Materials according to DIN 3859-1
Stainless steel fittings:
EO-2 tube fittings – X6CrNIMoTi 17122 in accordance with
DIN 17440 / EN 10088, material no.
1.4571.
Brass fittings:
EO-2 tube fittings – CUZN35Ni2 in accordance with DIN
17660, material no. 2.0540.
Elastomer seals: NBR (BUNA-N), FPM (Fluorocarbon)
Surface Finish - Steel fittings:
Standard
LL Series Body, Nuts, - Zinc clear chromate,
and Rings Chromium 6 Free
L+S Series Body and Nuts - Zinc clear chromate,
Chromium 6 Free
Short codes for surface protection procedure in accordancewith
DIN 267 part 9 or DIN 50942.