Page 410 - Cat4800-Oct2011

396 Parker Industrial Hose Customer Service
866 810 HOSE (4673) 800 242 HOSE (4673)
Strongsville, OH South Gate, CA
Eastern USA Western USA
www.safehose.com
e-mail: indhose@parker.com
Safety & Technical Information
in the system must be below the published maximum working pressure for
the Hose. Surge pressures and peak pressures can usually only be deter-
mined by sensitive electrical instrumentation that measures and indicates
pressures at millisecond intervals. Mechanical pressure gauges indicate
only average pressures and cannot be used to determine surge pressures
or peak transient pressures. Published burst pressure ratings for Hose is for
manufacturing test purposes only and is no indication that the Product can be
used in applications at the burst pressure or otherwise above the published
maximum recommended working pressure.
2.3 Suction: Hoses used for suction applications must be selected to insure that
the Hose will withstand the vacuum and pressure of the system. Improperly
selected Hose may collapse in suction application.
2.4 Temperature: Be certain that fuid and ambient temperatures, both steady
and transient, do not exceed the limitations of the Hose.Temperatures below
and above the recommended limit can degrade Hose to a point where a failure
may occur and release fuid. Properly insulate and protect the Hose Assembly
when routing near hot objects (e.g. manifolds). Do not use any Hose in any
application where failure of the Hose could result in the conveyed fuids (or
vapors or mist from the conveyed fuids) contacting any open fame, molten
metal, or other potential fre ignition source that could cause burning or explo-
sion of the conveyed fuids or vapors.
2.5 Fluid Compatibility: Hose Assembly selection must assure compatibility of
the Hose tube, cover, reinforcement, and Fittings with the fuid media used.
See the fuid compatibility chart in the Parker publication for the product being
considered or used.This information is offered only as a guide. Actual service
life can only be determined by the end user by testing under all extreme
conditions and other analysis.
Hose that is chemically compatible with a particular fuid must be assembled
using Fittings and adapters containing likewise compatible seals.
2.6 Permeation: Permeation (that is, seepage through the Hose) will occur from
inside the Hose to outside when Hose is used with gases, liquid and gas
fuels, and refrigerants (including but not limited to such materials as helium,
diesel fuel, gasoline, natural gas, or LPG). This permeation may result in
high concentrations of vapors which are potentially fammable, explosive,
or toxic, and in loss of fuid. Dangerous explosions, fres, and other hazards
can result when using the wrong Hose for such applications. The system
designer must take into account the fact that this permeation will take place
and must not use Hose if this permeation could be hazardous. The system
designer must take into account all legal, government, insurance, or any other
special regulations which govern the use of fuels and refrigerants. Never use
a Hose even though the fuid compatibility is acceptable without considering
the potential hazardous effects that can result from permeation through the
Hose Assembly.
Permeation of moisture from outside the Hose to inside the Hose will also
occur in Hose assemblies, regardless of internal pressure. If this moisture
permeation would have detrimental effects (particularly, but not limited to
refrigeration and air conditioning systems), incorporation of suffcient drying
capacity in the system or other appropriate system safeguards should be
selected and used.
2.7 Size: Transmission of power by means of pressurized fuid varies with pres-
sure and rate of fow. The size of the components must be adequate to keep
pressure losses to a minimum and avoid damage due to heat generation or
excessive fuid velocity.
2.8 Routing: Attention must be given to optimum routing to minimize inherent
problems (kinking or fow restriction due to Hose collapse, twisting of the
Hose, proximity to hot objects or heat sources). For additional routing rec-
ommendations see SAE J1273 and ISO 17165-2. Hose Assemblies have a
fnite life and if possible, should be installed in a manner that allows for ease
of inspection and future replacement. Rubber Hose because of its relative
short life, should not be used in residential and commercial buildings for HVAC
(heating, ventilating and air conditioning) applications.
2.9 Environment: Care must be taken to insure that the Hose and Fittings are
either compatible with or protected from the environment (that is, surrounding
conditions) to which they are exposed. Environmental conditions including but
not limited to ultraviolet radiation, sunlight, heat, ozone, moisture, water, salt
water, chemicals and air pollutants can cause degradation and premature failure.
2.10 Mechanical Loads: External forces can signifcantly reduce Hose life or cause
failure. Mechanical loads which must be considered include excessive fexing,
twist, kinking, tensile or side loads, bend radius, and vibration. Use of swivel
type Fittings or adapters may be required to insure no twist is put into the Hose.
Unusual applications may require special testing prior to Hose selection.
2.11 Physical Damage: Care must be taken to protect Hose fromwear, snagging,
kinking, bending smaller that minimum bend radius and cutting, any of which
can cause premature Hose failure. Any Hose that has been kinked or bent to
a radius smaller than the minimum bend radius, and any Hose that has been
cut or is cracked or is otherwise damaged should be removed and discarded.
2.12 Proper End Fitting: See instructions 3.2 through 3.5. These recommenda-
tions may be substantiated by testing to industry standards such as SAE J517
for hydraulic applications, or MIL-A-5070, AS1339, or AS3517 for Hoses from
Parker’s Stratofex Products Division for aerospace applications.
2.13 Length: When establishing a proper Hose length, motion absorption, Hose
length changes due to pressure, and Hose and machine tolerances and
movement must be considered.
2.14 Specifcations and Standards: When selecting Hose and Fittings, govern-
ment, industry, and Parker specifcations 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 fre resistant fuids that are to be conveyed by
Hose require use of the same type of Hose as used with petroleum base fuids.
Some such fuids require a special Hose, while a few fuids will not work with
any Hose at all. See instructions 2.5 and 1.5. The wrong Hose may fail after
a very short service. In addition, all liquids but pure water may burn fercely
under certain conditions, and even pure water leakage may be hazardous.
2.17 Radiant Heat: Hose can be heated to destructionwithout contact by such nearby
items as hot manifolds or molten metal.The same heat source may then initiate
a fre. This 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 ap-
propriate fre resistant materials. Flame or weld spatter could burn through
the Hose and possibly ignite escaping fuid 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 affects all materials used in Hose as-
semblies. Since the long-term effects may be unknown, do not expose Hose
assemblies to atomic radiation.
2.20 Aerospace Applications: The only Hose and Fittings that may be used for
in-fight aerospace applications are those available from Parker’s Stratofex
Products Division.Do not use any other Hose or Fittings for in-fight applications.
Do not use any Hose or Fittings fromParker’s Stratofex Products Division with
any other Hose or Fittings, unless expressly approved in writing by the engineer-
ing manager or chief engineer of Stratofex Products Division and verifed 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. Threaded 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. The 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 specifcally 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 specifc Parker product, and (ii)
the user verifes 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.The Parker published instructions
must be followed for assembling the Fittings on the Hose. These instructions
are provided in the Parker Fitting catalog for the specifc 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.
Parker Safety Guide, Parker Publication No. 4400-B.1 (Continued)