Hose Products Division
Parker Hannifin Corporation
Wickliffe, Ohio
www.parkerhose.com
12
Crimping Machine
TH8-D206
Bulletin 4480-T22-US
Safety Guide for Selecting and Using Hose, Fittings and Related Accessories
the Hose and the Fittings, Fitting finish (some Fitting
finishes are electrically conductive while others are non-
conductive), manufacturing methods (including mois-
ture control), how the Fittings contact the Hose, age
and amount of deterioration or damage or other
changes, moisture content of the Hose at any particu-
lar time, and other factors.
The following are considerations for electrically non-
conductive and conductive Hose. For other applica-
tions consult the individual catalog pages and the ap-
propriate industry or regulatory standards for proper
selection.
2.1.1 Electrically Nonconductive Hose: Certain applica-
tions require that the Hose be nonconductive to pre-
vent electrical current flow or to maintain electrical iso-
lation. For these applications that require Hose to be
electrically nonconductive, including but not limited to
applications near high voltage electric lines, only spe-
cial nonconductive Hose can be used. The manufac-
turer of the equipment in which the nonconductive Hose
is to be used must be consulted to be certain that the
Hose and Fittings that are selected are proper for the
application. Do not use any Parker Hose or Fitting for
any such application requiring nonconductive Hose,
including but not limited to applications near high volt-
age electric lines, unless (i) the application is expressly
approved in the Parker technical publication for the
product, (ii) the Hose is marked “nonconductive”, and
(iii) the manufacturer of the equipment on which the
Hose is to be used specifically approves the particular
Parker Hose and Fitting for such use.
2.1.2 Electrically Conductive Hose: Parker manufactur-
ers special Hose for certain applications that require
electrically conductive Hose.
Parker manufactures special Hose for conveying paint
in airless paint spraying applications. This Hose is
labeled “Electrically Conductive Airless Paint Spray
Hose” on its layline and packaging. This Hose must
be properly connected to the appropriate Parker Fit-
tings and properly grounded in order to dissipate dan-
gerous static charge buildup, which occurs in all air-
less paint spraying applications. Do not use any other
Hose for airless paint spraying, even if electrically con-
ductive. Use of any other Hose or failure to properly
connect the Hose can cause a fire or an explosion
resulting in death, personal injury, and property dam-
age.
Parker manufactures a special Hose for certain com-
pressed natural gas (“CNG”) applications where static
electricity buildup may occur. Parker CNG Hose as-
semblies comply with AGA Requirements 1-93, “Hoses
for Natural Gas Vehicles and Fuel Dispensers”. This
Hose is labeled “Electrically Conductive for CNG Use”
on its layline and packaging. This Hose must be prop-
erly connected to the appropriate Parker Fittings and
properly grounded in order to dissipate dangerous static
charge buildup, which occurs in, for example, high ve-
locity CNG dispensing or transfer. Do not use any
other Hose for CNG applications where static charge
buildup may occur, even if electrically conductive. Use
of other Hoses in CNG applications or failure to prop-
erly connect or ground this Hose can cause a fire or
an explosion resulting in death, personal injury, and
property damage. Care must also be taken to protect
against CNG permeation through the Hose wall. See
section 2.6, Permeation, for more information. Parker
CNG Hose is intended for dispenser and vehicle use
at a maximum temperature of 180°F. Parker CNG
Hose should not be used in confined spaces or
unventilated areas or areas exceeding 180°F. Final
assemblies must be tested for leaks. CNG Hose As-
semblies should be tested on a monthly basis for con-
ductivity per AGA 1-93.
Parker manufacturers special Hose for aerospace in
flight applications. Aerospace in flight applications
employing Hose to transmit fuel, lubricating fluids and
hydraulic fluids require a special Hose with a conduc-
tive inner tube. This Hose for in flight applications is
available only from Parker’s Stratoflex Products Divi-
sion. 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 prop-
erly connect 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 in-
dustry, aircraft engine, and aircraft requirements.
2.2
Pressure: Hose selection must be made so that the
published maximum recommended working pressure
of the Hose is equal to or greater than the maximum
system pressure. Surge pressures or peak transient
pressures in the system must be below the published
maximum working pressure for the Hose. Surge pres-
sures and peak pressures can usually only be deter-
mined by sensitive electrical instrumentation that mea-
sures 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 pur-
poses only and is no indication that the Product can
be used in applications at the burst pressure or other-
wise 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 se-
lected Hose may collapse in suction application.
2.4
Temperature: Be certain that fluid and ambient tem-
peratures, 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. Prop-
erly insulate and protect the Hose Assembly when rout-
ing 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, mol-
ten metal, or other potential fire ignition source that
could cause burning or explosion of the conveyed flu-
ids or vapors.
2.5
Fluid Compatibility: Hose Assembly selection must
assure compatibility of the Hose tube, cover, reinforce-
ment, and Fittings with the fluid media used. See the
fluid compatibility chart in the Parker publication for
the product being considered or used. This informa-
