《SAE J2197-1997 HFC-134a (R-134a) SERVICE HOSE FITTINGS FOR AUTOMOTIVE AIR-CONDITIONING SERVICE EQUIPMENT.pdf》由会员分享，可在线阅读，更多相关《SAE J2197-1997 HFC-134a (R-134a) SERVICE HOSE FITTINGS FOR AUTOMOTIVE AIR-CONDITIONING SERVICE EQUIPMENT.pdf（6页珍藏版）》请在三一文库上搜索。
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
15、connection. 4.Functional Description 4.1The high-pressure hose assembly shall meet SAE J2196 requirements and will be terminated at one end with the 0.500 in x 16 ACME threaded nut. The other end will be permanently attached to the SAE J639 service charge coupling or terminated with the optional M14
16、 x 1.5-6G external thread/male hose barb fitting. SAE J2197 Reaffirmed MAR97 -3- FIGURE 20.500 in16-ACME-2G-RH-EXT FIGURE 3SAE HOSE BARB R-134a SERVICE ADAPTER SAE J2197 Reaffirmed MAR97 -4- 4.2The low-pressure hose assembly shall meet SAE J2196 requirements and will be terminated at one end with th
17、e 0.500 in x 16 ACME threaded nut. The other end will be permanently attached to the SAE J639 service charge coupling or terminated with the optional M14 x 1.5-6G external thread/male hose barb fitting. 4.3The utility hose shall meet SAE J2196 requirements and will be terminated at both ends using 0
18、.500 in x 16 ACME threaded nut. 4.3.1Utility hose used on four hose gauge systems should conform to requirements. 4.4Manifold Gauge Assembly shall require three or four 0.500 in x 16 ACME male threaded connections. 4.5Containers disposable or refillable shall require 0.500 in x 16 ACME male threaded
19、 connections with shut off valves. 4.6Refrigerant recovery, charging stations, and stand-alone vacuum pumps shall require 0.500 in x 16 ACME male threaded connection unless an internal, nonserviceable connection is made by the equipment manufacturer. 4.7High- and low-pressure charge couplings shall
20、be constructed with an internal, M14 x 1.5-6H right-hand thread connection as an option to attaching the hose assembly with a nonserviceable connection. (Figure 4) FIGURE 4SAE SPUD R-134a SERVICE ADAPTER 5.TestingThis test procedure is for the qualification of new connection for R-134a automotive ai
21、r-conditioning system service equipment. 5.1Determine the minimum torque necessary for a gas tight shutoff between the nipple and valve body at a gas pressure equal to the maximum rated working pressure per SAE J2196. For cycling purposes, twice this shutoff torque will be used to simulate normally
22、applied field torque. 5.2Cycling is to be conducted at atmospheric pressure, since that is the pressure at which connections are normally made. SAE J2197 Reaffirmed MAR97 -5- 5.3Before and after cycling, measurements of the connection shall be recorded (such as threaded elements, nipple bore diamete
23、rs, and any other dimensions that may be subject to change) due to repeated tightenings. 5.4Each connection is to be cycled 500 times with tightening to the torque determined in 5.1. One cycle consists of tightening to the predetermined torque and then loosening to at most finger tight. 5.5After eac
24、h 100 cycles, the torque required to achieve gas tight shutoff at test pressure shall be recorded to determine if there is any abnormal torque buildup in shutoff requirements. The measurements indicated in 5.3 shall also be recorded at this interval to determine if there is any abnormal deformation
25、of parts. 5.6Each connection shall be subjected to a hydrostatic test and must withstand a pressure of a least 4 times the maximum rated working pressure per SAE J2196 without structure failure. 5.7After completion of the previous tests, the results will be recorded on a suitable test report form wh
26、ich will be kept on file at the Compressed Gas Association office. 5.7.1Testing of either a left-hand or right-hand connection of identical design (except for thread direction) automatically qualifies the untested connection of the opposite thread direction. (The direction of the thread does not eff
27、ect the structural integrity of the design.) PREPARED BY THE SAE INTERIOR CLIMATE CONTROL STANDARDS COMMITTEE SAE J2197 Reaffirmed MAR97 RationaleNot applicable. Relationship of SAE Standard to ISO StandardNot applicable. ApplicationThis specification covers fittings intended for connecting service
28、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. Reference Section SAE J639Vehicle Service Coupling SAE J2196Service Hose for Automotive Air Conditioning SAE J2210HFC-134a Recycling Equipment for Mobile Air-Conditioning Systems ARI 720Refrigerant Access Valves and Hose Connectors Developed by the SAE Interior Climate Control Standards Committee