1、 AEROSPACE STANDARD COUPLING, RIGID, FIXED CAVITY, THREADED FERRULE TYPE TUBE ENDS, ENVELOPE DIMENSIONS DESIGN STANDARD AS1731Copyright 2014 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means,
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3、ED1982-09 REVISED2009-05 REAFFIRMED2014-11 THIRD ANGLE PROJECTION CUSTODIAN: G-3/G-3A REV.C FEDERAL SUPPLY CLASS 4730 SAE Technical StandardsBoardRulesprovidethat:“ThisreportispublishedbySAE toadvancethestateoftechnicalandengineering sciences. The use of thisreport isentirelyvoluntary, andits applic
4、ability andsuitability for any particularuse, includingany patentinfringement arising therefrom,is the soleresponsibility of theuser.”SAE reviewseachtechnical reportatleasteveryfiveyearsatwhichtimeitmayberevised,reaffirmed,stabilized,orcancelled. SAEinvites yourwritten comments andsuggestions.RATION
5、ALE AS1731C HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE FIVE-YEAR REVIEW POLICY. AS1731 SHEET 1 OF 4 REV. C SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS1731C FIGURES REDRAWN FOR CLARITY. FIGURE 1 - TYPE I COUPLING - ASSEMBL
6、ED VIEW FIGURE 2 - TYPE I COUPLING - EXPLODED VIEW AEROSPACE STANDARD AS1731 SHEET 2 OF 4 REV. C COUPLING, RIGID, FIXED CAVITY, THREADED FERRULE TYPE TUBE ENDS, ENVELOPE DIMENSIONS DESIGN STANDARD FIGURE 3 - TYPE II COUPLING - ASSEMBLED VIEW FIGURE 4 - TYPE II COUPLING - EXPLODED VIEW AEROSPACE STAN
7、DARD AS1731 SHEET 3 OF 4 REV. C COUPLING, RIGID, FIXED CAVITY, THREADED FERRULE TYPE TUBE ENDS, ENVELOPE DIMENSIONS DESIGN STANDARD TABLE 1 - ENVELOPE DIMENSIONS BASIC NO. AS1731 SIZE CODE (TUBE SIZE) AS568 O-RING DASH NO. /1/ TYPES I AND II COUPLINGS A MAX TYPES I AND II COUPLINGS B MAX /2/ TYPES I
8、 AND II COUPLINGS C MIN /2/ TYPES I AND II COUPLINGS D MIN /2/ 04 05 06 08 10 12 16 20 24 28 32 36 40 44 48 56 64 72 80 .250 .312 .375 .500 .625 .750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 2.750 3.000 3.500 4.000 4.500 5.000 012 013 014 016 018 020 024 028 030 032 034 036 038 040 042 044 046 048
9、050 1.260 1.260 1.260 1.260 1.275 1.275 1.275 1.275 1.450 1.450 1.450 1.450 1.450 1.450 1.380 1.380 1.365 1.698 1.698 .829 .892 .954 1.079 1.214 1.402 1.652 1.902 2.152 2.402 2.662 2.912 3.162 3.412 3.793 4.298 4.798 5.308 5.807 1.118 1.118 1.118 1.118 1.134 1.134 1.194 1.194 1.294 1.294 1.294 1.355
10、 1.355 1.355 1.355 1.355 1.355 1.626 1.626 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.15 1.40 NOTES /1/ THE DASH NUMBERS LISTED IN THE TABULATION ARE STANDARD O-RING SIZES AS DEFINED BY AS568. O-RING MATERIAL IS TO BE SELECTED ON BASIS OF FLUID COMPATIBILI
11、TY AND SUPPLIED BY USER. /2/ DIMENSION REPRESENTS MINIMUM UNOBSTRUCTED CLEARANCE FOR ASSEMBLY. IT IS SUGGESTED THAT IF SPACE PERMITS, AN ADDITIONAL .50 in SHOULD BE PROVIDED TO “C“ AND “D“ DIMENSIONS AND 2.00 in TO “B“ DIMENSIONS TO FURTHER EASE ASSEMBLY AND DISASSEMBLY. THIS ASSEMBLY CLEARANCE DIME
12、NSION SHOULD APPEAR ON TUBING ASSEMBLY DRAWING. /3/ TANGENT POINT OF TUBE BEND OR BULKHEAD CLEARANCE REQUIRED FOR ASSEMBLY. 4. RIGID COUPLING ASSEMBLY CONSISTS OF THE FOLLOWING: a. TYPE I (1) AS1734 ONE NUT (2) AS1732 ONE BODY (3) AS1736 ONE WASHER (4) ONE O-RING (USER FURNISHED) (5) AS1737 ONE FERR
13、ULE AEROSPACE STANDARD AS1731 SHEET 4 OF 4 REV. C COUPLING, RIGID, FIXED CAVITY, THREADED FERRULE TYPE TUBE ENDS, ENVELOPE DIMENSIONS DESIGN STANDARD b. TYPE II (1) AS1735 ONE NUT (2) AS1733 ONE BODY (3) AS1736 ONE WASHER (4) ONE O-RING (USER FURNISHED) (5) AS1737 ONE FERRULE 5. SEE PROCUREMENT SPEC
14、IFICATION AS1730 FOR PERFORMANCE DETAILS. 6. SEE APPLICABLE AS STANDARDS FOR MATERIALS AND DETAILED DIMENSIONS 7. INTENDED USE: a. TYPE I COUPLING ASSEMBLIES ARE INTENDED FOR USE IN LOW VIBRATION AND TUBE FLEXURE AREAS WHERE HAND TIGHTENING OF THE ASSEMBLY WILL ENSURE A LEAK TIGHT JOINT. ROTATION OF
15、 AS1732 BODY AND AS1737 FERRULE MUST BE INDEPENDENTLY PREVENTED TO ENSURE EFFECTIVENESS OF THE LOCK WIRE TO RESTRAIN THE AS1734 NUT FROM ROTATION. b. TYPE II COUPLING ASSEMBLIES ARE INTENDED FOR USE IN HIGH VIBRATION AND TUBE FLEXURE AREAS WHERE AS1730 ASSEMBLY TORQUES ARE REQUIRED TO ENSURE A LEAK
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