1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS V 7475 KS V 7475： 2012 2012 10 31 http:/www.kats.go.krKS V 7475:2012 : ( ) ( ) () () () ( ) : (http:/www.standard.go.kr) ： ：2012 10 31 2012-0574 ： ： ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS V 7475:2012 i ii 1 1 2 .1 3 .2 4 3 4.1 .3 4.2 3 5 3 5.1
2、 .3 5.2 .4 5.3 5 5.4 (plug) .5 5.5 (stem) 6 5.6 (stem sealing) .6 5.7 (seat ring) 6 5.8 .7 5.9 .7 5.10 8 5.11 .8 6 .9 6.1 .9 6.2 .9 6.3 9 6.4 .11 6.5 .11 6.6 11 6.7 .11 6.8 , .11 6.9 (Fire safety test) 13 6.10 (Cryogenic test).13 7 15 8 .15 A( ) 16 18 KS V 7475:2012 ii . , , . , , . KS V 7475:2012 G
3、lobe valves for cryogenic services 1 ( 50 196 ) , . LNG , . 2 . . ( ) . KS B 2821, ASME B 1.5, Acme Screw Threads ASME B 1.8, Stub Acme Screw Flanged Fittings ASME B 16.5, Pipe Flanges and Flanged Fittings ASME B 16.10, Face-to-Face and End-to-End Dimensions of Valves ASME B 16.11, Forged Fittings,
4、Socket-Welding and Threaded ASME B 16.25, butt-welding Ends ASME B 16.34, Valves-Flanged, Threads, and Welding End ASME B 46.1, Surface Texture (Surface Roughness, Waviness, and Lay) ASTM A182/A182M, Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings and Valves and Parts for Hi
5、gh-temperature Service ASTM A194/A194M, Carbon and Alloy Steel Nuts and Bolts for High-Pressure or High-Temperature Service, or Both ASTM A320/A320M, Alloys-Steel and Stainless Steel Bolting for Low-Temperature service ASTM A350/A350M, Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness T
6、esting for Piping Components ASTM A351/A351M, Casting, Austenitic, for Pressure-Containing Parts ASTM A370, Test Methods and Definition for Mechanical Testing of Steel Products ASTM A694/694M, Carbon and Alloy Steel Forgings, for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmissi
7、on service ASTM E186, Reference Radiographs for Heavy-Walled(2 to 4 - in) Steel Castings ASTM E446, Reference Radiographs for Steel Castings up to 2in.(50.8mm) in Thickness ASME Sec V, Non-destructive Examination ASME Sec. VIII, Pressure vessels ASME Sec. IX, Welding and Brazing Qualifications KS V
8、7475:2012 2 ASME B 16.47, Large Diameter Steel Flanges API 6D, Specification for Pipeline Valves API 598, Valve Inspection and Testing API 6FA, Specification for Fire Test for Valves API 600, Steel Gate Valves, Flanged and Butt-Welding Ends MSS-SP-55, Quality Standard for steel Castings for Valves,
9、Flanges and Fittings and other Piping Components (Visual Method) BS 6364, Valves for Cryogenic Service BS 1873, Specification for steel globe and globe stop and check valves (flanged and butt-welding ends) for the petroleum, petrochemical and allied industries 3 . 3.1 (DN: Norminal Diameter) , “DN”
10、(mm) . 1 “DN” 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400 2 DN . 3.2 (PN: Norminal Pressure) 1 PN (3.1) . 2 , , / . 3 “PN” 2, 5, 6, 10, 16, 20, 25 40, 50 3.3 (NPS: Norminal Pipe Size) “NPS“ . NPS . NPS . 3.4 - “Class” KS V 7475:2012 3 . (Class) 150, Class 300, Class 60
11、0, Class 900, Class 1 500, Class 2 500 4 4.1 1 . 1 ( ) () LNG( ) 183 88 434 kg/m3 478 kg/m3NG( ) 160 65 0.7 kg/m3 0.89 kg/m3LN2( ) 196 804 kg/m3N2( ) 196 65 1.184 kg/m34.2 2 . 2 (Class) MPa(psi) 150 2.0(290) 300 5.2(750) 600 10.3(1 500) 800 13.8(2 000)900 15.5(2 250) 1 ASME B16.34 . 2 Class 900 , . 3 (line list) . 4 196 100 . 5 5.1 (IS) (OS77.120.00
