Page 194 - 4300 Catalog Cover.pdf

G6 Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
4300 Catalog Pipe Fittings and Port Adapters
Dimensions and pressures for reference only, subject to change.
Metric Parallel
In Europe, primarily in Germany, the traditional metric paral-
lel thread form is used extensively to connect components in
hydraulic systems. This metric thread is designed to thread into
and seal in a female Metric parallel port conforming to ISO-
9974-1 (DIN-3852, Part 1). Fittings in this section with male
metric threads use a primary sealing method of an O-ring and
retaining ring (similar to Fig. G5). Additional sealing methods
such as a cutting face or an EOlastic seal (similar to Fig. G6)
are also available on other fittings within the catalog. Sealing is
accommodatedwithoneof theaforementionedsealingmethods,
not with the threads. It is also important to note that with these
male metric threads, the seal occurs on the top face (spotface)
of the port, not in an O-ring gland or chamfer as in SAE and
ISO-6149 straight threads. A detail of this metric port is shown
on page U25.
To minimize further proliferation of additional port thread styles,
the International Standards Organization Technical Committee
131 completed the development of a world standard leak-free
port connection. It is recommended that this port, ISO 6149-
1, be specified in all new hydraulic fluid power applications.
Parker and other fluid connector manufacturers have expanded
product offering to incorporate the ISO 6149 male studs as a
standard on many tube fitting products. Parker offers the ISO
6149 male stud end, shown in Fig. G7, on several tube fitting
products including: Seal-Lok, Triple-Lok, EO, EO-2, Conversion
Adapters, Plugs, etc.This port, utilizesmetric parallel threads for
mechanical holding power and a sealing method similar to the
proven SAE Straight Thread O-ring port. A detail of this metric
port is shown on page U26.
Indentification
Groove
Fig. G7 — ISO 6149 Male
Feature Advantage Benefit
Tapered Thread Fittings
Compact size Suitable selection for plumbing in limited or
tight space in a compact system.
Compact systems are more efficient
and reduce the need for excessive
routing of costly hose or tube
Widespread acceptability Available worldwide for OEM and MRO
applications
Eases efforts to find component
parts and replacement fittings,
reducing unnecessary downtime
High static pressure rating Allows for use in high pressure applications Increases versatility of fitting
Offered in three standard
materials (Steel, Stainless
Steel, and Brass)
Allows customer to match media and
temperature applications without special
fittings and seals.
Reduces component procurement
costs and increases fitting availability
Adaptable to ORFS,
Flareless Bite-type, Metric
Bite-type, 37° flare, etc.
Versatility for end customer and for customer
standardization efforts
Standardization reduces
procurement costs
High temperature
applications
Is not limited by temperature range of
elastomeric seal
Increases versatility of fitting
Straight Thread Fittings
Reliable sealing in
dynamics applications
Ideal in systems with high pressure and
cycling
Provides reliable, long-term sealing
Unlimited reusability/
remakeability
Extends the service life of the fitting Reduces maintenance costs and
component replacement costs
No thread sealant needed Eliminates the potential for contaminating and
damaging sensitive hydraulic components
due to thread sealant
Reduces maintenance costs and
component replacement costs
Infinite positioning of
shaped adapters
Eliminates potential of damaging adapter
and/or component by incorrectly assembling
to accomplish correct orientation
Improves assembly time and
reduces maintenance costs
Elastomeric seal Tolerant of minor surface imperfections to
provide leak-free connection
Reduces operational and
maintenance costs