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Parker Hannifin Corporation

Parflex Division

Ravenna, Ohio

Hydraulic &

Pneumatic

Hose & Fit.

PTFE

Hose &

Fittings

Thermoplastic

Tubing

Coiled Air Hose,

Fittings

& Accessories

Truck (Fleet)

Products

Tooling &

Equipment

Hose

Accessories

Technical &

Design

Information

Approvals &

Guides

A

lphanumeric

Index

Parker Safety Guide

lubricating fluids and hydraulic fluids require a special Hose with a

conductive inner tube. This Hose for in flight applications is available

only from Parker’s Stratoflex Products Division. Do not use any other

Parker Hose for in flight applications, even if electrically conductive.

Use of other Hoses for in flight applications or failure to properly con-

nect or ground this Hose can cause a fire or an explosion resulting in

death, personal injury , and property damage. These Hose assemblies

for in flight applications must meet all applicable aerospace industry,

aircraft engine, and aircraft requirements.

2.2

Pressure:

Hoseselectionmust bemadeso that thepublishedmaximum

recommendedworking pressure of theHose is equal to or greater than

the maximum system pressure. Surge pressures or peak transient

pressures in the systemmust be below the publishedmaximumwork-

ing pressure for the Hose. Surge pressures and peak pressures can

usually only be determined by sensitive electrical instrumentation that

measuresand indicatespressuresatmillisecond 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:

Hosesused for suctionapplicationsmust beselected 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 fluid 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 fluid. 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 fluids (or vapors or mist from

the conveyed fluids) contacting any open flame, moltenmetal, or other

potential fire ignition source that could cause burning or explosion of

the conveyed fluids or vapors.

2.5

Fluid Compatibility:

Hose Assembly selection must assure compati-

bility of the Hose tube, cover, reinforcement, and Fittings with the fluid

media used. See the fluid 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 fluid must be as-

sembled using Fittings and adapters containing likewise compatible

seals.

2.6

Permeation:

Permeation (that is, seepage through theHose) will occur

frominside theHose tooutsidewhenHose isusedwithgases, liquidand

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 flam-

mable, explosive, or toxic, and in loss of fluid. Dangerous explosions,

fires, and other hazards can result when using thewrongHose for such

applications. The system designer must take into account the fact that

thispermeationwill takeplaceandmust not useHose if thispermeation

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 fluid 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 refrigerationandair conditioningsystems), incorporation

of sufficient 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 fluid varies with

pressureand rateof flow. Thesizeof the componentsmust beadequate

to keep pressure losses to a minimum and avoid damage due to heat

generation or excessive fluid velocity.

2.8

Routing:

Attention must be given to optimum routing to minimize

inherent problems (kinking or flow restriction due to Hose collapse,

twisting of the Hose, proximity to hot objects or heat sources).

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 significantly reduce Hose life

or cause failure. Mechanical loads which must be considered include

excessive flexing, 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 from wear,

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 recom-

mendations 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 Stratoflex Products Division for

aerospace applications.

2.13 Length:

When establishing a proper Hose length, motion absorption,

Hose lengthchangesdue topressure, andHoseandmachine tolerances

and movement must be considered.

2.14 Specifications and Standards:

When selecting Hose and Fittings,

government, industry, andParker specificationsandrecommendations

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 FireResistant Fluids:

Some fire resistant fluids that are to be conveyed

by Hose require use of the same type of Hose as used with petroleum

base fluids. Some such fluids require a special Hose, while a few fluids

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 fiercely 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. The same heat

source may then initiate a fire. This can occur despite the presence of

cool air around the Hose.

2.18 WeldingorBrazing:

Whenusinga torchorarc-welder incloseproximity

to hydraulic lines, the hydraulic lines should be removed or shielded

with appropriate fire resistant materials. Flame or weld spatter could

burn through the Hose and possibly ignite escaping fluid 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

assemblies. Since the long-termeffectsmaybeunknown, donot expose

Hose assemblies to atomic radiation.

2.20 Aerospace Applications:

The only Hose and Fittings that may be used

for in flight aerospace applications are Hose available from Parker’s

Stratoflex Products Division. Do not use any other Hose or Fittings for

in flight applications. Do not use any Hose or Fittings from Parker’s

Stratoflex Products Division with any other Hose or Fittings, unless

expressly approved in writing by the engineering manager or chief

engineer of Stratoflex Products Division and verified by the user’s own

testing and inspection to aerospace industry standards.

2.21 Unlocking Couplings:

Ball locking couplings or other couplings with

disconnect sleeves can unintentionally disconnect if they are dragged

over obstructions or if the sleeve is bumped or moved enough to cause

disconnect. Threaded couplings should be considered where there is

a potential for accidental uncoupling.

3.0

HOSE AND FITTING ASSEMBLY AND INSTALLATION INSTRUCTIONS

3.1

Component Inspection:

Prior to assembly, a careful examination of the

HoseandFittingsmust beperformed. All componentsmust bechecked

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 specifically listed by Parker for that Fitting,

unless authorized in writing by the engineering manager or chief en-

gineer of the appropriate Parker division. Do not assemble a Parker

Fitting on another manufacturers Hose or a Parker Hose on another

manufacturers 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 specific Parker product, and (ii) the user veri-

fies the Assembly and the application through analysis and testing. For

Parker Hose that does not specify a Parker Fitting, the user is solely