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Parker Hannifin Corporation

Parflex Division

Ravenna, Ohio

Coiled Air Hose,

Fittings

& Accessories

Hydraulic &

Pneumatic

Hose & Fit.

PTFE

Hose &

Fittings

The

rmoplastic

Tu

bing

Truck (Fleet)

Products

Tooling &

Equipment

Hose

Accessories

Technical &

Design

Information

Approvals &

Guides

Alphanumeric

Index

Parker Safety Guide

responsible for the selection of the proper Fitting and Hose Assembly

procedures. See instruction 1.4.

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 specific 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 Fit-

ting with anything but the listed swage or crimp machine and dies in

accordance with Parker published instructions. Do not crimp or swage

anothermanufacturers Fittingwith aParker crimp or swage die unless

authorized in writing by the engineering manager of 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 mat-

ing 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 field attachable (Field

Attachable) Hose Fitting that has blown or pulled off 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 fluid

power application.

3.6

Pre-Installation Inspection:

Prior to installation, acareful examination

of the Hose Assembly must be performed. Inspect the Hose Assembly

for anydamageor defects. DoNOTuseanyHoseAssembly that displays

any signs of nonconformance.

3.7

MinimumBendRadius:

Installationof aHoseat less than theminimum

listed bend radius may significantly reduce the Hose life. Particular

attentionmust be given to preclude sharpbending at theHose toFitting

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

flexing, pressure surges, and contact with other mechanical compo-

nents. 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 theHosewhen the Fittings are being

tightened or otherwise during use.

3.11 External Damage:

Proper installation is not completewithout insuring

that tensile loads, side loads, kinking, flattening, potential abrasion,

thread damage, or damage to sealing surfaces are corrected or elim-

inated. 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

Hosemaximumworkingpressure) andchecked for proper functionand

freedom from leaks. Personnel must stay out of potential hazardous

areas while testing and using.

3.13 Routing:

The 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 fluid media comes in contact with

hot surfaces, open flame, or sparks, a fire or explosion may occur. See

section 2.4.

4.0

HOSE AND FITTING MAINTENANCE AND REPLACEMENT

INSTRUCTIONS

4.1

Evenwithproperselectionand installation,Hose lifemaybesignificantly

reducedwithout acontinuingmaintenanceprogram. Theseverity of the

application, risk potential froma possible Hose failure, and experience

withanyHose failures in theapplicationor insimilarapplicationsshould

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 InspectionHose/Fitting:

Any of the following conditions require

immediate shut down and replacement of the Hose Assembly:

• Fitting slippage on Hose,

• Damaged, cracked, cut or abraded cover (any reinforcement ex-

posed);

• Hard, stiff, heat cracked, or charred Hose;

• Cracked, damaged, or badly corroded Fittings;

• Leaks at Fitting or in Hose;

• Kinked, crushed, flattened or twisted Hose; and

• Blistered, soft, degraded, or loose cover.

4.3

Visual Inspection All Other:

The following items must be tightened,

repaired, corrected or replaced as required:

• Leaking port conditions;

• Excess dirt buildup;

• Worn clamps, guards or shields; and

• System fluid level, fluid type, and any air entrapment.

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 As-

semblies and elastomeric seals should be inspected and replaced at

specific replacement intervals, based on previous service life, govern-

ment or industry recommendations, or when failures could result in

unacceptable downtime, damage, or injury risk. See section 1.2.

4.6

Hose Inspection and Failure:

Hydraulic power is accomplished by

utilizing high-pressure fluids to transfer energy and do work. Hoses,

Fittings, and Hose Assemblies all contribute to this by transmitting

fluids at high pressures. Fluids under pressure can be dangerous and

potentially lethal and, therefore, extreme caution must be exercised

when working with fluids under pressure and handling the Hoses

transporting the fluids. 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 fluids 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 fluids can and will penetrate the skin and

cause severe tissue damage and possibly loss of limb. Even seemingly

minor hydraulic fluid injection injuries must be treated immediately

by a physician with knowledge of the tissue damaging properties of

hydraulic fluid.

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., areemployed ina systemand cancausepressure 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 fluid. It may

take several minutes or even hours for the pressure to be relieved so

that the Hose Assembly may be examined safely.

Once thepressurehasbeen reduced to zero, theHoseAssemblymay be

taken off the equipment and examined. It must always be replaced if a

failure has occurred. Never attempt to patch or repair aHose Assembly

that has failed. Consult thenearestParkerdistributoror theappropriate

Parker division for Hose Assembly replacement information.

Never touch or examine a failedHoseAssembly unless it is obvious that

the Hose no longer contains fluid under pressure. The high-pressure

fluid 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 AGA 1-93 Section 4.2 “Visual Inspection Hose/Fitting”. The

recommended procedure is to pressurize the Hose and check for leaks

and to visually inspect the Hose for damage.

Caution:

Matches, candles, open flame or other sources of ignition

shall not be used for Hose inspection. Leak check solutions should

be rinsed off after use.