SAE J2197-1997 HFC-134a (R-134a) SERVICE HOSE FITTINGS FOR AUTOMOTIVE AIR-CONDITIONING SERVICE EQUIPMENT.pdf
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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. QUESTIONS REGARDING THIS DOCUMENT: (412) 772-8512 FAX: (412) 776-0243 TO PLACE A DOCU
3、MENT ORDER; (412) 776-4970 FAX: (412) 776-0790 Copyright 1997 Society of Automotive Engineers, Inc. All rights reserved.Printed in U.S.A. SURFACE VEHICLE 400 Commonwealth Drive, Warrendale, PA 15096-0001 STANDARD Submitted for recognition as an American National Standard J2197 REAF. MAR97 Issued1992
4、-06 Reaffirmed1997-03 Superseding J2197 JUN92 HFC-134a (R-134a) SERVICE HOSE FITTINGS FOR AUTOMOTIVE AIR-CONDITIONING SERVICE EQUIPMENT ForewordThe purpose of this SAE Standard is to establish specific but unique fittings for service equipment used in maintaining HFC-134a (R-134a) systems. This is n
5、ecessary to avoid cross mixing of refrigerant and lubricants from CFC based systems. This applies only to systems specifically designed for or retrofitted to R-134a. Hermetically sealed appliances and refrigerated cargo systems are not covered by this document. 1.Scope 1.1This SAE Standard covers fi
6、ttings intended for connecting service hoses, per SAE J2196, from Mobile Air- Conditioning Systems to service equipment such as manifold gauges, vacuum pumps and air conditioning charging, recovery and recycling equipment. (Figure 1) FIGURE 1R-134a SERVICE EQUIPMENT SAE J2197 Reaffirmed MAR97 -2- 1.
7、2Due to similarities between English and metric thread sizes a single, unique ACME thread fitting is specified. This fitting was recommended by the Compressed Gas Association (CGA), Connection Standards Committee Task Force as one which could be qualified to meet their requirements for use and safet
8、y in a time frame consistent with the introduction of R-134a. It was selected because its unique design would reduce the likelihood of cross-treading service hoses on R-12/R-134a refrigerant storage containers and service equipment. 1.3The high and low pressure hose in SAE J2196 requires the charge
9、coupling (used to connect service hoses to vehicle access ports) to be an integral part of the hose assembly. To allow removal of the hose from the coupling for hose replacement only, a two-piece construction with a wrench tight connection is permitted. Specifications covering this fitting are provi
10、ded. 2.References 2.1Applicable PublicationsThe following publications form a part of this specification to the extent specified herein. The latest issue of SAE Publications shall apply. 2.1.1SAE PUBLICATIONSAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001. SAE J639Vehicle Servi
11、ce Coupling SAE J2196Service Hose for Automotive Air conditioning SAE J2210HFC-134a Recycling Equipment for Mobile Air-Conditioning Systems 2.1.2ARI PUBLICATIONAvailable from Air Conditioning and Refrigeration Institute, 1501 Wilson Boulevard, Sixth Floor, Arlington, VA 22209. ARI 720Refrigerant Acc
12、ess Valves and Hose Connectors 3.Specification and Application Description 3.10.500 in x 16-2G ACMERight Hand Thread, Cylinder Valve Outlet ConnectionCompressed Gas Asso- ciation, Inc. Connection No. 167. (Figure 2) 3.1.1The Connection shall be used on all R-134a refrigerant storage containers liqui
13、d and vapor outlet connections. It will also be used for all R-134a service equipment including manifold gauge hose connections, utility hose connection to the vacuum pump, and charging, recovery and recycling equipment as defined in SAE J2210. 3.1.2Applications which will require the use of valve c
14、ores should locate the valve core in accordance with ARI 720. 3.2M14 x 1.5-6G right hand thread, SAE Hose Barb connection. (Figure 3) 3.2.1This fitting may be used as an option to a nonserviceable connection of the charge coupling to the service hose assembly and will require a secure, wrench tight
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