16 17
2.14 Specications and Standards: When selecting Hose and Fittings,
government, industry, and Parker specications and
recommendations must be reviewed and followed as applicable.
2.15 Hose Cleanliness: Hose components may vary in cleanliness levels.
Care must be taken to insure that the Hose Assembly selected has an
adequate level of cleanliness for the application.
2.16 Fire Resistant Fluids: Some re resistant uids that are to be
conveyed by Hose require use of the same type of Hose as used with
petroleum base uids. Some such uids require a special Hose, while
a few uids will not work with any Hose at all. See instructions 2.5
and 1.5. e wrong Hose may fail after a very short service. In
addition, all liquids but pure water may burn ercely under certain
conditions, and even pure water leakage may be hazardous.
2.17 Radiant Heat: Hose can be heated to destruction without contact by
such nearby items as hot manifolds or molten metal. e same heat
source may then initiate a re. is can occur despite the presence of
cool air around the Hose.
2.18 Welding or Brazing: When using a torch or arc welder in close
proximity to hydraulic lines, the hydraulic lines should be removed
or shielded with appropriate re resistant materials. Flame or weld
spatter could burn through the Hose and possibly ignite escaping uid
resulting in a catastrophic failure. Heating of plated parts, including
Hose Fittings and adapters, above 450°F (232°C) such as during
welding, brazing or soldering may emit deadly gases.
2.19 Atomic Radiation: Atomic radiation aects all materials used in Hose
assemblies. Since the long-term eects may be unknown, do not
expose Hose assemblies to atomic radiation.
2.20 Aerospace Applications: e only Hose and Fittings that may be
used for in-ight aerospace applications are those available from
Parker’s Stratoex Products Division. Do not use any other Hose
or Fittings for in-ight applications. Do not use any Hose or Fittings
from Parker’s Stratoex Products Division with any other Hose or
Fittings, unless expressly approved in writing by the engineering
manager or chief engineer of Stratoex Products Division and
veried by the user’s own testing and inspection to aerospace
industry standards.
2.21 Unlocking Couplings: Ball locking couplings or other Fittings with
quick disconnect ability can unintentionally disconnect if they are
dragged over obstructions, or if the sleeve or other disconnect
member, is bumped or moved enough to cause disconnect. readed
Fittings should be considered where there is a potential for accidental
uncoupling.
3.0 HOSE AND FITTINGS ASSEMBLY AND
INSTALLATION INSTRUCTIONS
3.1 Component Inspection: Prior to assembly, a careful examination
of the Hose and Fittings must be performed. All components must be
checked for correct style, size, catalog number, and length. e Hose
must be examined for cleanliness, obstructions, blisters, cover
looseness, kinks, cracks, cuts or any other visible defects. Inspect
the Fitting and sealing surfaces for burrs, nicks, corrosion or other
imperfections. Do NOT use any component that displays any signs
of nonconformance.
3.2 Hose and Fitting Assembly: Do not assemble a Parker Fitting on a
Parker Hose that is not specically listed by Parker for that Fitting,
unless authorized in writing by the engineering manager or chief
engineer of the appropriate Parker division. Do not assemble a
Parker Fitting on another manufacturer’s Hose or a Parker Hose
on another manufacturer’s Fitting unless (i) the engineering manager
or chief engineer of the appropriate Parker division approves the
Assembly in writing or that combination is expressly approved in
the appropriate Parker literature for the specic Parker product, and
(ii) the user veries the Assembly and the application through analysis
and testing. For Parker Hose that does not specify a Parker Fitting,
the user is solely responsible for the selection of the proper Fitting and
Hose Assembly procedures. See instruction 1.4.
To prevent the possibility of problems such as leakage at the Fitting or
system contamination, it is important to completely remove all debris
from the cutting operation before installation of the Fittings. e
Parker published instructions must be followed for assembling
the Fittings on the Hose. ese instructions are provided in the
Parker Fitting catalog for the specic Parker Fitting being used, or by
calling 1-800-CPARKER, or at www.parker.com.
3.3 Related Accessories: Do not crimp or swage any Parker Hose or
Fitting with anything but the listed swage or crimp machine and dies
in accordance with Parker published instructions. Do not crimp or
swage another manufacturer’s Fitting with a Parker crimp or swage
die unless authorized in writing by the engineering manager or chief
engineer of the appropriate Parker division.
3.4 Parts: Do not use any Parker Fitting part (including but not limited
to socket, shell, nipple, or insert) except with the correct Parker
mating parts, in accordance with Parker published instructions,
unless authorized in writing by the engineering manager or chief
engineer of the appropriate Parker division.
3.5 Field Attachable/Permanent: Do not reuse any eld attachable
Hose Fitting that has blown or pulled o a Hose. Do not reuse a
Parker permanent Hose Fitting (crimped or swaged) or any part
thereof. Complete Hose Assemblies may only be reused after proper
inspection under section 4.0. Do not assemble Fittings to any
previously used hydraulic Hose that was in service, for use in a uid
power application.
3.6 Pre-Installation Inspection: Prior to installation, a careful
examination of the Hose Assembly must be performed. Inspect the
Hose Assembly for any damage or defects. DO NOT use any Hose
Assembly that displays any signs of nonconformance.
3.7 Minimum Bend Radius: Installation of a Hose at less than the
minimum listed bend radius may signicantly reduce the Hose life.
Particular attention must be given to preclude sharp bending at
the Hose to Fitting juncture. Any bending during installation at less
than the minimum bend radius must be avoided. If any Hose is
kinked during installation, the Hose must be discarded.
3.8 Twist Angle and Orientation: Hose Assembly installation must
be such that relative motion of machine components does not
produce twisting.
3.9 Securement: In many applications, it may be necessary to restrain,
protect, or guide the Hose to protect it from damage by unnecessary
exing, pressure surges, and contact with other mechanical
components. Care must be taken to insure such restraints do not
introduce additional stress or wear points.
3.10 Proper Connection of Ports: Proper physical installation of the
Hose Assembly requires a correctly installed port connection insuring
that no twist or torque is transferred to the Hose when the Fittings are
being tightened or otherwise during use.
3.11 External Damage: Proper installation is not complete without
insuring that tensile loads, side loads, kinking, attening, potential
abrasion, thread damage or damage to sealing surfaces are corrected
or eliminated. See instruction 2.10.
3.12 System Checkout: All air entrapment must be eliminated and the
system pressurized to the maximum system pressure (at or below the
Hose maximum working pressure) and checked for proper function
and freedom from leaks. Personnel must stay out of potentia
hazardous areas while testing and using.
3.13 Routing: e Hose Assembly should be routed in such a manner so
if a failure does occur, the escaping media will not cause personal
injury or property damage. In addition, if uid media comes in
contact with hot surfaces, open ame or sparks, a re or explosion
may occur. See section 2.4.
3.14 Ground Fault Equipment Protection Devices (GFEPDs):
WARNING! Fire and Shock Hazard. To minimize the danger of re
if the heating cable of a Multitube bundle is damaged or improperly
installed, use a Ground Fault Equipment Protection Device.
Electrical fault currents may be insucient to trip a conventional
circuit breaker.
For ground fault protection, the IEEE 515:1989 (www.ansi.org)
standard for heating cables recommends the use of GFEPDs with a
nominal 30 milliampere trip level for “piping systems in classied
areas, those areas requiring a high degree of maintenance, or which
may be exposed to physical abuse or corrosive atmospheres”.
4.0 HOSE AND FITTING MAINTENANCE
AND REPLACEMENT INSTRUCTIONS
4.1 Even with proper selection and installation, Hose life may be
signicantly reduced without a continuing maintenance program.
e severity of the application, risk potential from a possible Hose
failure, and experience with any Hose failures in the application or in
similar applications should determine the frequency of the inspection
and the replacement for the Products so that Products are replaced
before any failure occurs. A maintenance program must be
established and followed by the user and, at minimum, must include
instructions 4.2 through 4.7.
4.2 Visual Inspection Hose/Fitting: Any of the following conditions
require immediate shut down and replacement of the Hose Assembly:
• FittingslippageonHose;
• Damaged,cracked,cutorabradedcover(anyreinforcement
exposed);
• Hard,sti,heatcracked,orcharredHose;
• Cracked,damaged,orbadlycorrodedFittings;
• LeaksatFittingorinHose;
• Kinked,crushed,attenedortwistedHose;and
• Blistered,soft,degraded,orloosecover.
4.3 Visual Inspection All Other: e following items must be tightened,
repaired, corrected or replaced as required:
• Leakingportconditions;
• Excessdirtbuildup;
• Wornclamps,guardsorshields;and
• Systemuidlevel,uidtype,andanyairentrapment.
4.4 Functional Test: Operate the system at maximum operating pressure
and check for possible malfunctions and leaks. Personnel must avoid
potential hazardous areas while testing and using the system. See
section 2.2.
4.5 Replacement Intervals: Hose assemblies and elastomeric seals
used on Hose Fittings and adapters will eventually age, harden,
wear and deteriorate under thermal cycling and compression set.
Hose Assemblies and elastomeric seals should be inspected and
replaced at specic replacement intervals, based on previous service
life, government or industry recommendations, or when failures could
result in unacceptable downtime, damage, or injury risk. See section
1.2. Hose and Fittings may be subjected to internal mechanical and/
or chemical wear from the conveying uid and may fail without
warning. e user must determine the product life under such
circumstances by testing. Also see section 2.5.
4.6 Hose Inspection and Failure: Hydraulic power is accomplished
by utilizing high pressure uids to transfer energy and do work.
Hoses, Fittings and Hose Assemblies all contribute to this by
transmitting uids at high pressures. Fluids under pressure can be
dangerous and potentially lethal and, therefore, extreme caution must
be exercised when working with uids under pressure and handling
the Hoses transporting the uids. From time to time, Hose Assemblies
will fail if they are not replaced at proper time intervals. Usually these
failures are the result of some form of misapplication, abuse, wear or
failure to perform proper maintenance. When Hoses fail, generally
the high pressure uids inside escape in a stream which may or may
not be visible to the user. Under no circumstances should the user
attempt to locate the leak by “feeling” with their hands or any other
part of their body. High pressure uids can and will penetrate the skin
and cause severe tissue damage and possibly loss of limb. Even
seemingly minor hydraulic uid injection injuries must be treated
immediately by a physician with knowledge of the tissue damaging
properties of hydraulic uid.
If a Hose failure occurs, immediately shut down the equipment and
leave the area until pressure has been completely released from the
Hose Assembly. Simply shutting down the hydraulic pump may or
may not eliminate the pressure in the Hose Assembly. Many times
check valves, etc., are employed in a system and can cause pressure
to remain in a Hose Assembly even when pumps or equipment are
not operating. Tiny holes in the Hose, commonly known as pinholes,
can eject small, dangerously powerful but hard to see streams of
hydraulic uid. It may take several minutes or even hours for
the pressure to be relieved so that the Hose Assembly may be
examined safely.
Once the pressure has been reduced to zero, the Hose Assembly may
be taken o the equipment and examined. It must always be replaced
if a failure has occurred. Never attempt to patch or repair a Hose
Assembly that has failed. Consult the nearest Parker distributor or
the appropriate Parker division for Hose Assembly replacement
information.
Never touch or examine a failed Hose Assembly unless it is obvious
that the Hose no longer contains uid under pressure. e high
pressure uid is extremely dangerous and can cause serious and
potentially fatal injury.
4.7 Elastomeric Seals: Elastomeric seals will eventually age, harden,
wear and deteriorate under thermal cycling and compression set.
Elastomeric seals should be inspected and replaced.
4.8 Refrigerant Gases: Special care should be taken when working
with refrigeration systems. Sudden escape of refrigerant gases can
cause blindness if the escaping gases contact the eye and can cause
freezing or other severe injuries if it contacts any other portion of
the body.
4.9 Compressed Natural Gas (CNG): Parker CNG Hose Assemblies
should be tested after installation and before use, and at least on
a monthly basis per ANSI/IAS NGV 4.2-1999; CSA 12.52-M99
Section 4.2 “Visual Inspection Hose/Fitting”. e recommended
procedure is to pressurize the Hose and check for leaks and to visually
inspect the Hose for damage.
Caution: Matches, candles, open ame or other sources of ignition
shall not be used for Hose inspection. Leak check solutions should be
rinsed o after use.
5.0 HOSE STORAGE
5.1 Age Control: Hose and Hose Assemblies must be stored in a
manner that facilitates age control and rst-in and rst-out usage
based on manufacturing date of the Hose and Hose Assemblies.
e shelf life of rubber Hose or Hose Assemblies that have passed
visual inspection and a proof test is 10 years (40 quarters) from the
date of manufacture. e shelf life of thermoplastic and
polytetrauoroethylene Hose or Hose Assemblies is considered
to be unlimited.
5.2 Storage: Stored Hose and Hose Assemblies must not be subjected
to damage that could reduce their expected service life and must be
placed in a cool, dark and dry area with the ends capped. Stored Hose
and Hose Assemblies must not be exposed to temperature extremes,
ozone, oils, corrosive liquids or fumes, solvents, high humidity,
rodents, insects, ultraviolet light, electromagnetic elds or radioactive
materials.
Federal OSHA regulation 29 CFR 1910.1200 requires that we transmit to our customers Material Safety Data Sheets for all material covered under the law. If you
are an employer in SIC 20-39 who has not yet received them, you are required to obtain them from us and provide the information to employees as directed in
Section (b) of the regulation. Please contact the Parex Technical Service Department at 330-298-4066 (phone) or 330-296-8433 (FAX).
Material Safety Data Sheets (MSDS) are available upon request.
