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    SAE AS 4688C-2017 FITTING TEE REDUCER FLARELESS AND SHORT FLARELESS.pdf

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    SAE AS 4688C-2017 FITTING TEE REDUCER FLARELESS AND SHORT FLARELESS.pdf

    1、 AEROSPACE STANDARD FITTING, TEE, REDUCER, FLARELESS AND SHORT FLARELESS AS4688Copyright 2017 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, electronic, mechanical, photocopying, recordin

    2、g, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED1991-07 REAFFIRMED2004-07 REVISED2017-07THIRD

    3、 ANGLE PROJECTION CUSTODIAN: G-3/G-3B REV.CFEDERAL SUPPLY CLASS 4730 AS4688 SHEET 1 OF 4 REV. C PROCUREMENT SPECIFICATION: AS18280 /4/ SAETechnicalStandardsBoard Rulesprovidethat:“Thisreportispublished bySAEto advance the state oftechnicaland engineering sciences.Theuse ofthisreportisentirelyvolunta

    4、ry,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarising therefrom,isthe sole responsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhich time itmaybe revised,reaffirmed,stabilized,orcancelled.SAEinvitesyourwritten commentsandsuggestions.SA

    5、E values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AS4688C RATIONALE A. REVISE -6 PORT THREAD FROM .5625-16UNJF TO .5625-18UNJF (ERROR CORRECTION). B. ADDED CONDUCTIVE HIGH PURITY ALUMINUM COATING FOR ALUMINUM ALLOY FITTINGS. FIGURE 1 - FITTING, T

    6、EE, REDUCER TABLE 1 - DIMENSIONS AND WEIGHTS BASIC NO. AS4688 /9/ /19/ SIZE CODE D H J +.005 -.020 LB/EA APPROX REF ALUM LB/EA APPROX REF CRES LB/EA APPROX REF TI 20 .517 .124 1.375 .331 .960 .575 24 .614 .156 1.688 .497 1.441 .833 AEROSPACE STANDARD AS4688 SHEET 2 OF 4 REV. C FITTING, TEE, REDUCER,

    7、 FLARELESS AND SHORT FLARELESS TABLE 2 - LEG LENGTH A SIZE OF PORT FORGING SIZE /9/ 20 FORGING SIZE /9/ 24 02 1.585 1.710 03 1.632 1.757 04 1.663 1.788 05 1.663 1.788 06 1.679 1.804 08 1.772 1.897 10 1.835 1.960 12 1.898 2.023 14 1.898 2.023 16 1.898 2.023 20 1.673 1.798 24 - 1.798 TABLE 3 - TUBE SI

    8、ZE AND CORRESPONDING THREADS PORT SIZE (NOMINAL TUBE SIZE) T THREAD PER AS8879 CLASS 3A 02 .125 .3125-24UNJF 03 .188 .3750-24UNJF 04 .250 .4375-20UNJF 05 .312 .5000-20UNJF 06 .375 .5625-18UNJF 08 .500 .7500-16UNJF 10 .625 .8750-14UNJF 12 .750 1.0625-12UNJ 14 .875 1.1875-12UNJ 16 1.000 1.3125-12UNJ 2

    9、0 1.250 1.5625-12UNJ 24 1.500 1.8125-12UNJ AEROSPACE STANDARD AS4688 SHEET 3 OF 4 REV. C FITTING, TEE, REDUCER, FLARELESS AND SHORT FLARELESS NOTES NOTICE THIS DOCUMENT REFERENCES A PART WHICH CONTAINS CADMIUM AS A PLATING MATERIAL. CONSULT LOCAL OFFICIALS IF YOU HAVE QUESTIONS CONCERNING CADMIUMS U

    10、SE. /1/ MATERIAL: a. CODE LETTER T: TYPE 6AL-4V TITANIUM ALLOY FORGING OR BAR PER AMS4928 b. CODE LETTER V: TYPE 15-5PH CORROSION RESISTANT STEEL FORGING OR BAR PER AMS5659 c. CODE LETTER W: TYPE 7075-T73 ALUMINUM ALLOY FORGING PER AMS4141 OR TYPE 7075-T7351 ALUMINUM ALLOY BAR PER AMS4124 2. HEAT TR

    11、EAT: a. MATERIAL CODE LETTER T: NONE b. MATERIAL CODE LETTER V: HEAT TREAT TO CONDITION H-1075 PER AMS2759/3 c. MATERIAL CODE LETTER W: NONE /3/ FINISH: a. MATERIAL CODE LETTER T - FLUORIDE PHOSPHATE CONVERSION COAT PER AMS2486 b. MATERIAL CODE LETTER V: 1. V CODE PARTS TO BE PASSIVATED ONLY WILL HA

    12、VE NO FINISH CODE LETTER AFTER THE SIZE CODE IN THE PART NUMBER. THE FINISH WILL BE: PASSIVATE PER AMS2700, TYPE 2 OR 8. 2. V CODE PARTS TO BE CADMIUM PLATED ONLY WILL HAVE THE FINISH CODE LETTER “P” AFTER THE SIZE CODE IN THE PART NUMBER. THE FINISH WILL BE: CADMIUM PLATE PER AMS-QQ-P-416, TYPE II,

    13、 CLASS 2. c. MATERIAL CODE LETTER W 1. W CODE PARTS TO BE ANODIZED ONLY WILL HAVE NO FINISH CODE LETTER AFTER THE SIZE CODE IN THE PART NUMBER. THE FINISH WILL BE ANODIZE PER AMS2472 OR PER MIL-A-8625, TYPE II, CLASS 2 DYED BROWN, SIMILAR TO COLOR 10080 OF AMS-STD-595. 2. W CODE PARTS TO BE COATED W

    14、ITH HIGH PURITY ALUMINUM ONLY WILL HAVE THE FINISH CODE LETTER “V” AFTER THE SIZE CODE IN THE PART NUMBER. SEE PROCUREMENT SPECIFICATION FOR REQUIREMENTS. /4/ PROCUREMENT SPECIFICATION: AS18280, EXCEPT AS SPECIFIED ON THIS STANDARD. PRODUCT SUPPLIED TO THIS SPECIFICATION SHALL BE MANUFACTURED BY AN

    15、ACCREDITED MANUFACTURER AS LISTED IN THE PERFORMANCE REVIEW INSTITUTE (PRI) QUALIFIED PRODUCTS LIST (QPL) PRI-QPL-AS18280 FOR THIS STANDARD. SEE www.eAuditN FOR CURRENT QPL ONLINE. /5/ IDENTIFICATION AT LOCATION SHOWN: MARK PER AS478 CLASS C OR D OR METHOD 7A3, 15A3, OR 15B. MANUFACTURERS NAME, TRAD

    16、EMARK OR CAGE CODE, BASIC PART NUMBER, AND MATERIAL CODE LETTER. 6. INTENDED USE: THIS PART IS INTENDED FOR USE IN TUBING CONNECTION SYSTEMS WITH NOMINAL OPERATING PRESSURES AS FOLLOWS: a. SIZES -20 AND -24 TITANIUM ALLOY AND CORROSION RESISTANT STEEL AT 3000 psi b. SIZES -20 AND -24 ALUMINUM ALLOY

    17、AT 600 psi LARGEST PORT DETERMINES PRESSURE RATING. 7. WHEN MACHINED FROM BAR OR OVERSIZED FORGINGS, THE CENTER BODY SECTION SHALL CONFORM TO AS1376, TABLE 10. AT LEAST ONE PORT SHALL BE -20 OR -24. /8/ RADIUS APPLICABLE FOR TITANIUM PARTS ONLY. /9/ LARGEST PORT (PORT #1 OR PORT #3) DETERMINES FORGI

    18、NG SIZE. MINIMUM FORGING SIZE IS SIZE -20. THIS STANDARD IS FOR REDUCERS ONLY; FOR ALL PORTS THE SAME SIZE USE AS4671. AEROSPACE STANDARD AS4688 SHEET 4 OF 4 REV. C FITTING, TEE, REDUCER, FLARELESS AND SHORT FLARELESS /10/ PORT #1 IS LARGER OR SAME SIZE AS PORT #2. /11/ FINISH CODE LETTER “P” SHALL

    19、BE PLACED AFTER SIZE CODES ONLY FOR MATERIAL CODE “V” PARTS THAT ARE TO BE CADMIUM PLATED. FINISH CODE LETTER “V” SHALL BE PLACED AFTER SIZE CODES ONLY FOR MATERIAL CODE “W” PARTS THAT ARE TO BE COATED WITH HIGH PURITY ALUMINUM TO PROVIDE LOW ELECTRICAL CONTACT RESISTANCE. NO OTHER LETTERS ARE TO FO

    20、LLOW THE SIZE CODES. 12. REVISION INDICATOR: A CHANGE BAR (l) LOCATED IN THE LEFT MARGIN IS FOR THE CONVENIENCE OF THE USER IN LOCATING AREAS WHERE TECHNICAL REVISIONS, NOT EDITORIAL CHANGES, HAVE BEEN MADE TO THE PREVIOUS ISSUE OF THIS DOCUMENT. AN (R) SYMBOL TO THE LEFT OF THE DOCUMENT TITLE INDIC

    21、ATES A COMPLETE REVISION OF THE DOCUMENT, INCLUDING TECHNICAL REVISIONS. CHANGE BARS AND (R) ARE NOT USED IN ORIGINAL PUBLICATIONS, NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY. 13. INVENTORIED PARTS CONFORMING TO THE PREVIOUS “LETTER CHANGE” MAY BE USED TO DEPLETION. 14. INTERPRETATION OF D

    22、RAWING PER AS4296. 15. SURFACE TEXTURE: SYMBOLS PER ASME Y14.36M. REQUIREMENTS PER ASME B46.1. UNLESS OTHERWISE SPECIFIED, MACHINED SURFACES TO BE 125 MICROINCHES Ra. 16. BREAK EDGES .003 TO .015, UNLESS OTHERWISE SPECIFIED. 17. DIMENSIONING AND TOLERANCING: ANSI Y14.5M-1982. 18. DIMENSIONS ARE IN I

    23、NCHES. UNLESS OTHERWISE SPECIFIED, TOLERANCES: LINEAR DIMENSIONS .010, ANGULAR DIMENSIONS 5. /19/ EXAMPLE OF PART NUMBER: AS4688 V 20 16 12 P /9/BASIC PART NUMBER FINISH CODE LETTER /3/ /11/MATERIAL CODE LETTER /1/ SIZE CODE, TUBE SIZE OFPORT #3 IN .062 INCREMENTSSIZE CODE, TUBE SIZE OFPORT #1 IN .062 INCREMENTS /10/SIZE CODE, TUBE SIZE OFPORT #2 IN .062 INCREMENTS /10/


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