1、 ,Reconditioning of Metallic Gate,Globe,and Check Valves API 621 ,2010 This Standard has been translated by the Scientific and Industrial Valve Manu-facturers Association with the permis-sion of the American Petroleum Institute(API).This translated version shall not replace nor supersede the English
2、 lan-guage version which remains the official version.API shall not be responsible for any errors,discrepancies or misinterpre-tations arising from this translation.No additional translation or reproduction may be made of the Standard without the prior written consent of API.-(API).,.API ,.API.Copyr
3、ight American Petroleum Institute Copyright American Petroleum Institute ,Reconditioning of Metallic Gate,Globe,and Check Valves Downstream Segment API 621 ,2010 API RECOMMENDED PRACTICE 621 THIRD EDITION,AUGUST 2010 -()(API)2011-105396 API,API,.American Petroleum Institute Copyright American Petrol
4、eum Institute (API).,.API ,()-,.API ,.API .,;,-,-,.API ,.,.API -.,API,.API ,API.,.,.,.,.,-(,).:API Publishing Services,1220 L Street,NW,Washington,DC 20005.Copyright 2010 American Petroleum Institute Copyright American Petroleum Institute iii ,API,-,-,.,.API,API.,/API/:1220 L Street,NW,Washington,DC
5、 20005.,.,API,.,2,.,API :API API,:1220 L Street,NW,Washington,DC 20005.API :1220 L Street,NW,Washington,DC 20005,standardsapi.org.Copyright American Petroleum Institute v 1 .1 2 .1 3 .2 4 .2 4.1 .2 4.2 .2 4.3 .2 4.4 .3 5 ,.3 5.1 .3 5.2 .3 5.3-.3 5.4 .4 6 .4 6.1 .4 6.2 .5 6.3 .6 6.4 .6 6.5 .6 6.6 .6
6、6.7 .7 6.8 .7 6.9 .7 6.10 .7 6.11 .7 6.12 .12 6.13 ().12 6.14 .12 6.15,.12 6.16 .13 6.17 .14 6.18 .14 6.19 .14 6.20 .14 7 .15 8 .15 9 .15 10 -.16 A().17 B().23 C().25 Copyright American Petroleum Institute vi A.1 .18 A.2 .19 A.3 .20 A.4 V-.21 A.5 -.22 1 .9 2 .10 3 .11 4 .11 5 -.13 Copyright American
7、 Petroleum Institute 1 ,1 1.1 (,API 600 API 594),(9%),ASME 150,300,400,600,900,1500,2500.,.1.2 ,./(OEM),OEM .,.,ISO 9001.1.3 ,.().,.2 .,().API 591,API 594,:,API 598,API 600,ASME B1.31,:ASME B1.5,ASME B1.8,ASME B16.5,ASME B16.10,ASME B16.34,ASME B31.3,1 ASME International,3 Park Avenue,New York,New Y
8、ork 10016,www.asme.org Copyright American Petroleum Institute 8 API 621 ASME,V,ASME,IX,ASTM A1932,ASTM A194,ASTM A216,.ASTM A217,.ASTM A351,-(),.ISO 90013,MSS SP554,()MSS SP 9,.3 3.1 ,.3.2 ,.4 4.1 4.1.1 ,/,.4.1.2 (),.4.2 (),4.3 ,:2 ASTM International,100 Barr Harbor Drive,West Conshohocken,Pennsylva
9、nia 19428,www.astm.org.3 International Organization for Standardization,1,ch.de la Voie-Creuse,Case postale 56,CH-1211,Geneva 20,Switzerland,www.iso.org.4 Manufacturers Standard Society of the Valve and Fittings Industry,Inc.,127 Park Street,N.E.,Vienna,Virginia 22180-4602,www.mss-.Copyright America
10、n Petroleum Institute 8 API 621 1);2),/;3),;4).4.4 ,.5 ,5.1 5.1.1 ,.5.1.2 (1),(2),.5.1.3 ,.5.1.4 .5.2 5.2.1 ,.5.2.2 ();,.R().5.2.3 ,.,.5.3-5.3.1 ,.5.3.2 ,.,.5.3.3 ,Copyright American Petroleum Institute 8 API 621 .5.4 5.4.1,.5.4.2 ,/.5.4.3,.OEM,.5.4.4 ,/,.).),.,NPS 2(DN 50).5.4.5 ,/.,.5.4.6 ,.6 6.1
11、6.1.1 6.1.1.1 IX ASME ,.6.1.1.2 .6.1.1.3 ,.6.1.2 6.1.2.1,.6.1.2.2 /.6.1.2.3 (SNT-TC-IA),Copyright American Petroleum Institute 8 API 621 V ASME.6.1.3 6.1.3.1 ,:),(OEM)OEM;),;),.6.1.3.2 ,:),(,),.),13CR ,.).6.1.3.3 :););););).6.2 6.2.1 6.2.1.1 ,/.6.2.1.2 ,.6.2.2 6.2.2.1 ,.6.2.2.2 ,.6.2.2.3 Copyright A
12、merican Petroleum Institute 8 API 621.ASME B1.3.6.3 6.3.1 .6.3.2 ,.6.3.3 -,.6.4 6.4.1 ,.6.4.2 .,.6.4.3 .,.().6.4.4 ()()(),.6.4.5 ,.6.5 6.5.1 ,.6.5.2 ,/.6.6 6.6.1 ,.6.6.2 (),.,/.6.6.3 OEM ,.,.6.6.4 ,/.6.6.5 .6.6.6 ,.6.6.7 Copyright American Petroleum Institute 8 API 621 ASME B1.5 B1.8.6.6.8 6.7 6.7.1
13、 ,.6.7.2 ,/.,6.7.3 ().6.8 6.8.1 ,/6.8.2 6.9 6.9.1 ,OEM.OEM,.A.1,.6.9.2 .6.10 6.10.1 ,.32 (0,8).6.10.2 .6.11 6.11.1 6.11.1.1 ,.6.11.1.2,(,),.6.11.1.3 .,.6.11.1.4 .,.6.11.1.5 Ra=175 (4,5),.5.9.2 5.9.3 API 600.Copyright American Petroleum Institute 8 API 621 ,.5.9.3 API 600,.,2%,.5.9.3 API 600,0,045 (1
14、,143).6.11.1.6 6.11.2 6.11.2.1 MSS SP 55.6.11.2.2 ,.2.6.11.2.3 ,().6.11.2.4 WC6,WC9,LC2,LC3,C5,C12 (PMI),.6.11.2.5 ,.,.).1.)().6.11.2.6 ,-,1,:),2.),2.)75%,2.6.11.2.7 .,.:).),.),.10.3 ASTM A-216,.6.11.2.8 WC6,WC9,C5 C12 .9.3 ASTM A-217.,.6.11.2.9 ASTM A-351.Copyright American Petroleum Institute 8 AP
15、I 621 6.11.2.10 ,.).Copyright American Petroleum Institute 16 API 621 1 ()150#300#400#600#900#1500#2500#DN()IMPS()25 1 0,20(5,1)0,62(15,7)0,20(5,1)0,62(15,7)-0,27(6,9)0,62(15,7)-0,45(11,4)0,75(19,1)0,53(13,5)0,75(19,1)40 11/2 0,20(5,1)0,68(17,3)0,25(6,4)0,75(19,1)-0,31(7,9)0,75(19,1)-0,53(13,5)0,87(
16、22,1)0,69(17,5)0,87(22,1)50 2 0,28(7,1)0,75(19,1)0,32(8,1)0,75(19,1)-0,38(9,7)0,75(19,1)-0,69(17,5)1,00(25,4)0,82(20,8)1,00(25,4)65 21/2 0,32(8,1)0,75(19,1)0,38(9,7)0,75(19,1)-0,41(10,4)0,87(22,1)-0,82(20,8)1,12(28,4)0,94(23,9)1,12(28,4)80 3 0,35(8,9)0,87(22,1)0,41(10,4)0,87(22,1)-0,44(11,1)1,00(25,4)0,69(17,5)1,12(28,4)0,88(22,4)1,25(31,8)1,12(28,4)1,25(31,8)100 4 0,38(9,7)1,00(25,4)0,44(11,1)1,00(25,4)0,44(11,1)1,12(28,4)0,57(14,5)1,12(28,4)0,78(19,8)1,25(31,8)1,07(27,2)1,37(34,8)1,35(34,3)1,3
