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Safety Guide Appendices SAFETY GUIDE FOR SELECTING AND USING QUICK ACTION COUPLINGS AND RELATED ACCESSORIES DANGER: Failure or improper selection or improper use of quick action couplings or related accessories can cause death,personal injury and property damage.Possible consequences of failure or improper selection or improper use of quick action couplings or related accessories include but are not limited to: � Couplings or parts thrown off at high speed. � Dangerously whipping hose. � High velocity fluid discharge. � Contact with conveyed fluids that may be hot, cold, � Explosion or burning of the conveyed fluid. toxic, or otherwise injurious. � Contact with suddenly moving or falling objects that are� Sparking or explosion while paint or flammable to be held in position or moved by the conveyed fluid. liquid spraying. Before selecting or using any Parker quick action couplings or related accessories, it is important that you read and follow the following instructions. 1.1 Scope: This safety guide provides instructions for selecting and using2.4 Size: Transmission of power by means of pressurized liquid varies with (including installing connecting, disconnecting, and maintaining) quick actionpressure and rate of flow.The size of the quick action couplings and other couplings and related accessories (including caps, plugs, blow guns, and twocomponents of the system must be adequate to keep pressure losses to a way valves).This safety guide is a supplement to and is to be used with, theminimum and avoid damage due to heat generation or excessive fluid velocity. specific Parker publications for the specific quick action couplings and related 2.5 Pressurized Connect or Disconnect: If connecting or disconnecting accessories that are being considered for use. under pressure is a requirement, use only quick action couplings designed for 1.2 Fail-Safe: Quick action couplings or the hose they are attached to can failthat purpose.The rated operating pressure of a quick action coupling may not without warning for many reasons.Design all systems and equipment in a fail-be the pressure at which it may be safely connected or disconnected. safe mode, so that failure of the quick action coupling or hose will not endanger 2.6 Environment: Care must be taken to ensure that quick action couplings persons or property. are either compatible with or protected from the environment (that is, 1.3 Distribution: Provide a copy of this safety guide to each person that issurrounding conditions) to which they are exposed.Environmental conditions responsible for selecting or using quick action coupling products.Do not selectincluding but not limited to ultraviolet radiation, ozone, moisture, water, salt or use quick action couplings without thoroughly reading and understandingwater, chemicals, and air pollutants can cause degradation and premature this safety guide as well as the specific Parker publications for the productsfailure. considered or selected. 2.7 Locking Means: Ball locking quick action couplings can unintentionally 1.4 User Responsibility: Due to the wide variety of operating conditions anddisconnect if they are dragged over obstructions on the end of a hose or if the uses for quick action couplings, Parker and its distributors do not represent orsleeve is bumped or moved enough to cause disconnect.Sleeves designed warrant that any particular quick action coupling is suitable for any specific endwith flanges to provide better gripping for oily or gloved hands are especially use system.This safety guide does not analyze all technical parameters thatsusceptible to accidental disconnect and should not be used where these must be considered in selecting a product.The user, through its own analysisconditions exist.Sleeve lock or union (threaded) sleeve designs should be and testing, is solely responsible for: considered where there is a potential for accidental uncoupling. � Making the final selection of the quick action couplings. 2.8 Mechanical Loads: External forces can significantly reduce quick action � Assuring that the user's requirements are met and that the use presents nocouplings' life or cause failure.Mechanical loads which must be considered health or safety hazards. include excessive tensile or side loads, and vibration.Unusual applications � Providing all appropriate health and safety warnings on the equipment onmay require special testing prior to quick action couplings selection. which the quick action couplings are used. 2.9 Specifications and Standards: When selecting quick action couplings, 1.5 Additional Questions: Call the appropriate Parker customer servicegovernment, industry, and Parker specifications must be reviewed and followed department if you have any questions or require any additional information.Foras applicable. the telephone numbers of the appropriate customer service department, see 2.10 Vacuum: Not all quick action couplings are suitable or recommended for the Parker publication for the product being considered or used. vacuum service.Quick action couplings used for vacuum applications must be 2.0 QUICK ACTION COUPLING SELECTION INSTRUCTIONS selected to ensure that the quick actions couplings will withstand the vacuum and pressure of the system. 2.1 Pressure: Quick action couplings selection must be made so that the published rated pressure of the coupling is equal to or greater than the2.11 Fire Resistant Fluids: Some fire resistant fluids require seals other than maximum system pressure.Surge pressures in the system higher than thethe standard nitrile used in many quick action couplings. rated pressure of the coupling will shorten the quick action coupling's life.Do 2.12 Radiant Heat: Quick action couplings can be heated to destruction or not confuse burst pressure or other pressure values with rated pressure and loss of sealability without contact by such nearby items as hot manifolds or do not use burst pressure or other pressure values for this purpose. molten metal.The same heat source may then initiate a fire.This can occur 2.2 Fluid Compatibility: Quick action couplings selection must assuredespite the presence of cool air around the quick action couplings. Appendices compatibility of the body and seal materials with the fluid media used.See the 2.13 Welding and Brazing: Heating of plated parts, including quick action fluid compatibility chart in the Parker publication for the product being couplings and port adapters, above 450�F (232�C) such as during welding, considered or used. brazing, or soldering may emit deadly gases and may cause coupling seal 2.3 Temperature: Be certain that fluid and ambient temperatures, bothdamage. steady and transient, do not exceed the limitations of the quick action couplings.Use caution and hand protection when connecting or disconnecting quick action couplings that are heated or cooled by the media they are con- ducting or by their environment. Parker Hannifin Corporation Quick Coupling Division II-1 Minneapolis, MN 55427
Goodyear Rubber Products
