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Truck(Fleet)PTFE &HydraulicTechnical&ThermoplasticAlphanumericTooling&CoiledHose,HoseAirApprovals& ProductsHose& TubingPneumaticDesignIndexAccessoriesEquipmentFittingsGuides Parker Safety Guide FittingsFit.&HoseInformationAccessories& lubricating fluids and hydraulic fluids require a special Hose with aor cause failure. Mechanical loads which must be considered include conductive inner tube. This Hose for in flight applications is availableexcessiveflexing,twist, kinking, tensileor side loads, bend radius, and only from Parker's Stratoflex Products Division. Do not use any othervibration. Use of swivel type Fittings or adapters may be required to Parker Hose for in flight applications, even if electrically conductive.insure no twist is put into the Hose. Unusual applications may require Use of other Hoses for in flight applications or failure to properly con-special testing prior to Hose selection. nect or ground this Hose can cause a fire or an explosion resulting in2.11 Physical Damage: Care must be taken to protect Hose from wear, death, personal injury ,and property damage. These Hose assembliessnagging, kinking, bending smaller that minimum bend radius, and for in flight applications must meet all applicable aerospace industry,cutting, any of which can cause prematureHose failure. Any Hosethat aircraft engine, and aircraft requirements. has been kinked or bent to a radius smaller than the minimum bend 2.2 Pressure:Hoseselectionmustbemadesothatthepublishedmaximum radius, and any Hose that has been cut or is cracked or is otherwise recommendedworkingpressure ofthe Hose isequal toor greaterthan damaged, should be removed and discarded. the maximum system pressure. Surge pressures or peak transient2.12 Proper End Fitting: See instructions 3.2 through 3.5. These recom- pressuresin the systemmustbebelowthepublished maximum work- mendations may be substantiated by testing to industry standards ing pressure for the Hose. Surge pressures and peak pressures cansuch as SAE J517 for hydraulic applications, or MIL-A-5070, AS1339, usuallyonlybe determined by sensitive electricalinstrumentationthator AS3517 for Hoses from Parker's Stratoflex Products Division for measuresandindicatespressures atmillisecondintervals.Mechanical aerospace applications. pressure gauges indicate only average pressures and cannot be used2.13 Length: When establishing a proper Hose length, motion absorption, to determine surge pressures or peak transient pressures. PublishedHoselengthchangesduetopressure, andHoseandmachinetolerances burst pressure ratings for Hose is for manufacturing test purposesand movement must be considered. only and is no indication that the Product can be used in applications2.14 Specifications and Standards: When selecting Hose and Fittings, at the burst pressure or otherwise above the published maximum government,industry,andParkerspecificationsandrecommendations recommended working pressure. must be reviewed and followed as applicable. 2.3 Suction:Hosesused for suctionapplicationsmustbeselectedtoinsure2.15 Hose Cleanliness: Hose components may vary in cleanliness levels. that the Hose will withstand the vacuum and pressure of the system.Care must be taken to insure that the Hose Assembly selected has an Improperly selected Hose may collapse in suction application. adequate level of cleanliness for the application. 2.4 Temperature: Be certain that fluid and ambient temperatures, both2.16 FireResistant Fluids: Some fireresistantfluidsthataretobe conveyed steady and transient, do not exceed the limitations of the Hose.by Hose require use of the same type of Hose as used with petroleum Temperatures below and above the recommended limit can degrade base fluids.Some such fluidsrequirea specialHose, while afew fluids Hose to a point where a failure may occur and release fluid. Properlywill not work with any Hose at all. See instructions 2.5 and 1.5. The insulateand protect theHoseAssemblywhen routingnearhot objects wrong Hose may fail after a very short service. In addition, all liquids (e.g. manifolds). Do not use any Hose in any application where failurebut pure water may burn fiercely under certain conditions, and even of the Hose could result in the conveyed fluids (or vapors or mist frompure water leakage may be hazardous. the conveyed fluids) contacting any open flame,moltenmetal, orother2.17 Radiant Heat: Hose can be heated to destruction without contact by potential fire ignition source that could cause burning or explosion ofsuch nearby items as hot manifolds or molten metal. The same heat the conveyed fluids or vapors. source may then initiate a fire. This can occur despite the presence of 2.5 Fluid Compatibility: Hose Assembly selection must assure compati-cool air around the Hose. bility of the Hose tube, cover, reinforcement, and Fittings with thefluid2.18 WeldingorBrazing:Whenusingatorchorarc-welderincloseproximity media used. See the fluid compatibility chart in the Parker publicationto hydraulic lines, the hydraulic lines should be removed or shielded for the product being considered or used. This information is offeredwith appropriate fire resistant materials. Flame or weld spatter could only as a guide. Actual service life can only be determined by the endburn through the Hose and possibly ignite escaping fluid resulting in user by testing under all extreme conditions and other analysis.a catastrophic failure. Heating of plated parts, including Hose Fittings Hose that is chemically compatible with a particular fluid must be as-and adapters, above 450�F (232�C) such as during welding, brazing, sembled using Fittings and adapters containing likewise compatibleor soldering may emit deadly gases. seals. 2.19 Atomic Radiation: Atomic radiation affects all materials used in Hose 2.6 Permeation: Permeation(that is,seepagethroughthe Hose)willoccur assemblies.Since thelong-termeffectsmaybeunknown,donotexpose frominsidethe HosetooutsidewhenHoseisusedwithgases,liquidand Hose assemblies to atomic radiation. gas fuels, and refrigerants (including but not limited to such materials2.20 Aerospace Applications: The only Hose and Fittings that may be used ashelium, diesel fuel,gasoline, natural gas,or LPG). Thispermeationfor in flight aerospace applications are Hose available from Parker's mayresultin highconcentrationsof vaporswhicharepotentially flam- Stratoflex Products Division. Do not use any other Hose or Fittings for mable, explosive, or toxic, and in loss of fluid. Dangerous explosions,in flight applications. Do not use any Hose or Fittings from Parker's fires, and otherhazardscanresultwhenusing thewrong Hose for such Stratoflex Products Division with any other Hose or Fittings, unless applications. The system designer must takeinto account the fact thatexpressly approved in writing by the engineering manager or chief this permeationwill takeplaceandmustnotuseHoseifthispermeation engineer of Stratoflex Products Division and verified by theuser's own could be hazardous. The system designer must take into account alltesting and inspection to aerospace industry standards. legal, government, insurance, or any other special regulations which2.21 Unlocking Couplings: Ball locking couplings or other couplings with governthe useof fuelsandrefrigerants.Never usea Hose even thoughdisconnect sleeves can unintentionally disconnect if they are dragged the fluid compatibility is acceptable without considering the potentialover obstructions or if the sleeve is bumped or moved enough tocause hazardous effects that can result from permeation through the Hosedisconnect. Threaded couplings should be considered where there is Assembly. a potential for accidental uncoupling. Permeation of moisture from outside the Hose to inside the Hose will also occur in Hose assemblies, regardless of internal pressure. If this3.0HOSE AND FITTING ASSEMBLY AND INSTALLATION INSTRUCTIONS moisture permeationwould have detrimental effects (particularly, but3.1Component Inspection:Priortoassembly, acareful examinationofthe not limitedtorefrigerationandairconditioning systems), incorporationHose andFittingsmustbeperformed. Allcomponents mustbechecked of sufficient drying capacity in thesystem or otherappropriate systemfor correct style, size, catalog number, and length. The Hose must safeguards should be selected and used. be examined for cleanliness, obstructions, blisters, cover looseness, 2.7 Size: Transmission of power by means of pressurizedfluid varies withkinks, cracks, cuts or any other visible defects. Inspect the Fitting and pressureandrateofflow.Thesize ofthecomponentsmustbeadequate sealingsurfaces for burrs, nicks, corrosion orotherimperfections. Do to keep pressure losses to a minimum and avoid damage due to heatNOT use any component that displays any signs of nonconformance. generation or excessive fluid velocity. 3.2 Hose and Fitting Assembly: Do not assemble a Parker Fitting on a 2.8 Routing: Attention must be given to optimum routing to minimize Parker Hose that is not specifically listed by Parker for that Fitting, inherent problems (kinking or flow restriction due to Hose collapse,unless authorized in writing by the engineering manager or chief en- twisting of the Hose, proximity to hot objects or heat sources).gineer of the appropriate Parker division. Do not assemble a Parker 2.9 Environment: Care must be taken to insure that theHose and FittingsFitting on another manufacturers Hose or a Parker Hose on another are either compatible with or protected from the environment (thatmanufacturers Fitting unless (i) the engineering manager or chief is, surrounding conditions) to which they are exposed. Environmentalengineer of the appropriate Parker division approves the Assembly in conditions including but not limited to ultraviolet radiation, sunlight,writing or that combination is expressly approved in the appropriate heat, ozone, moisture,water, salt water, chemicals, andairpollutantsParker literature for the specific Parker product, and (ii) the userveri- can cause degradation and premature failure. fies the Assembly and the applicationthrough analysisandtesting. For 2.10 Mechanical Loads: External forces can significantly reduce Hose lifeParker Hose that does not specify a Parker Fitting, the user is solely 300 Parker Hannifin Corporation Parflex Division Ravenna, Ohio
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