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Catalog 4400 US Technical Safety Guide published maximum working pressure for the Hose. Surge pressures and peakJ517 for hydraulic applications, or MIL-A-5070, AS1339, or AS3517 for Hoses pressures can usually only be determined by sensitive electrical instrumentationfrom Parker's Stratoflex Products Division for aerospace applications. that measures and indicates pressures at millisecond intervals. Mechanical pres-2.13Length: When establishing a properHose length, motion absorption, sure gauges indicate only average pressures and cannot be used to determineHose length changes due to pressure, and Hose and machine tolerances and A surge pressures or peak transient pressures. Published burst pressure ratings formovement must be considered. Hose is for manufacturing test purposes only and is no indication that the Product 2.14 Specifications and Standards: When selecting Hose and Fittings, can be used in applications at the burst pressure or otherwise above the published government, industry, and Parker specifications and recommendations must be maximum recommended working pressure. reviewed and followed as applicable. 2.3 Suction: Hoses usedfor suctionapplicationsmust be selected to insure 2.15 Hose Cleanliness: Hose components may vary in cleanliness levels. that the Hose will withstand the vacuum and pressure of the system. Improperly Care must be taken to insure that the Hose Assembly selected has an adequate selected Hose may collapse in suction application. level of cleanliness for the application. 2.4 Temperature: Be certain that fluid and ambient temperatures, both 2.16 Fire Resistant Fluids: Some fire resistant fluids that are to be con- steady and transient, do not exceed the limitations of the Hose. Temperatures veyed by Hose require use of the same type of Hose as used with petroleum below and above the recommended limit can degrade Hose to a point where a base fluids. Some such fluids require a special Hose, while a few fluids will not failure may occur and release fluid. Properly insulate and protect the Hose As- work with any Hose atall. See instructions 2.5 and 1.5. The wrong Hose may fail sembly when routing near hot objects (e.g. manifolds). Do not use any Hose in after a very short service. In addition, all liquids but pure water may burn fiercely any application where failure of the Hose could result in the conveyed fluids (or under certain conditions, and even pure water leakage may be hazardous. vapors or mist fromthe conveyed fluids) contacting any open flame, molten metal, 2.17 Radiant Heat: Hose can be heated to destruction without contact or other potential fire ignition source that could cause burning or explosion of the by such nearby items as hot manifolds or molten metal. The same heat source conveyed fluids or vapors. B may then initiate a fire. This can occur despite the presence of cool air around 2.5 Fluid Compatibility: HoseAssemblyselection must assure compatibility the Hose. of the Hose tube, cover, reinforcement, and Fittings with the fluid media used. 2.18 Welding or Brazing: When using a torch or arc-welder in close prox- See the fluid compatibility chart in the Parker publication for the product being imity to hydraulic lines, the hydraulic lines should be removed or shielded with considered or used. This information is offered only as a guide. Actual service life appropriate fire resistant materials. Flame or weld spatter could burn throughthe can only be determined by the end user by testing under all extreme conditions Hoseand possibly ignite escaping fluid resulting in a catastrophic failure. Heating and other analysis. of plated parts, including Hose Fittings and adapters, above 450�F (232�C) such Hose that ischemically compatible with a particular fluid must be assembled using as during welding, brazing, or soldering may emit deadly gases. Fittings and adapters containing likewise compatible seals. 2.19 Atomic Radiation: Atomic radiation affects allmaterials used in Hose 2.6 Permeation: Permeation (that is, seepage through the Hose) will assemblies. Since the long-term effects may be unknown, do not expose Hose occur from inside the Hose to outside when Hose is used with gases, liquid and assemblies to atomic radiation. gas fuels, and refrigerants (including but not limited to such materials as helium, 2.20 AerospaceApplications: The only Hose andFittings that may be used diesel fuel, gasoline, natural gas, or LPG). This permeation may result in high for in flight aerospace applications are tHose available from Parker's Stratoflex concentrations of vapors which are potentially flammable, explosive, or toxic, and Products Division. Do not use any other Hose or Fittings for in flightapplications. in loss of fluid. Dangerous explosions, fires, and other hazards can result when Do not use any Hose or Fittings from Parker's Stratoflex Products Division with using the wrong Hose for such applications. The system designer must take into C any other Hose or Fittings, unless expressly approved in writing by the engineer- account the fact that this permeation will take place and must not use Hose if this ing manager or chief engineer of Stratoflex Products Division and verified by the permeation could be hazardous. The system designer must take into account all user's own testing and inspection to aerospace industry standards. 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 2.21Unlocking Couplings: Ball locking couplings or other couplings with is acceptable without considering the potential hazardous effects that can resultdisconnect sleeves can unintentionally disconnect if they are dragged over from permeation through the Hose Assembly. obstructions or if the sleeve is bumped or moved enough to cause disconnect. Threaded couplings should be consideredwhere there is a potentialfor accidential Permeation of moisture from outside the Hose to inside the Hose will also occur uncoupling. 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 sufficient drying capacity in the system or3.0HOSE AND FITTING ASSEMBLY AND INSTALLATION other appropriate system safeguards should be selected and used. INSTRUCTIONS 2.7 Size: Transmission of power by means of pressurized fluid varies 3.1 Component Inspection: Prior to assembly, a careful examination of with pressure and rate of flow. The size of the components must be adequate to the Hose and Fittings must be performed. All components must be checked for keep pressure losses to a minimum and avoid damage due to heat generation or correct style, size, catalog number, and length. The Hose must be examined for excessive fluid velocity. cleanliness, obstructions, blisters, cover looseness, kinks, cracks, cuts or anyD 2.8 Routing: Attention must be given to optimum routing to minimizeother visible defects. Inspect the Fitting and sealing surfaces for burrs, nicks, inherent problems (kinking or flow restriction due to Hose collapse, twisting of thecorrosion or other imperfections. Do NOT use any component that displays any Hose, proximity to hot objects or heat sources). signs of nonconformance. 2.9 Environment: Care must be taken to insure that the Hose and Fittings3.2Hose and Fitting Assembly: Do not assemble a Parker Fitting on a are either compatible with or protected from the environment (that is, surroundingParker Hose that is not specifically listed by Parker for that Fitting, unless autho- EquipmentAccessoriesTechnicalHoseFittings conditions) to which they are exposed. Environmentalconditions including but notrized in writing by the engineering manager or chief engineer of the appropriate limited to ultraviolet radiation, sunlight, heat, ozone, moisture, water, salt water,Parker division. Do not assemble a Parker Fitting on another manufacturers chemicals, and air pollutants can cause degradation and premature failure.Hose or a Parker Hose on another manufacturers Fitting unless (i) the engineer- 2.10 Mechanical Loads: External forces can significantly reduce Hose lifeing manager or chief engineer of the appropriate Parker division approves the or cause failure. Mechanical loads which must be considered include excessiveAssembly in writing or that combination is expressly approved in the appropriate flexing, twist, kinking, tensile or side loads, bend radius, and vibration. Use ofParker literature for the specific Parker product, and (ii) the user verifies the As- swivel type Fittings or adapters may be required to insure no twist is put into thesembly and the application through analysis and testing. For Parker Hose that Hose. Unusual applications may require special testing prior to Hose selection.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. 2.11 Physical Damage: Care must be taken to protect Hose from wear, snagging, kinking, bending smaller that minimum bend radius, and cutting, any ofThe Parker published instructions must be followed for assembling the Fittings which can cause premature Hose failure. Any Hose that has been kinked or benton the Hose. These instructions are provided in the Parker Fitting catalog forE to a radius smaller than the minimum bend radius, and any Hose that has beenthe specific Parker Fitting being used, or by calling 1-800-CPARKER, or atwww. cut or is cracked or is otherwise damaged, should be removed and discarded.parker.com. 2.12 Proper End Fitting: See instructions 3.2 through 3.5. These recom-3.3Related Accessories: Do not crimp or swage any Parker Hose or Fit- mendations may be substantiated by testing to industry standards such as SAEting with anything but the listed swage or crimp machine and dies in accordance E-41 Hose Products Division Parker Hannifin Corporation Wickliffe, Ohio
Goodyear Rubber Products
