This European Standard specifies the tabulation method for determining the wall thickness of valve bodies, bonnets and covers with essentially circular cross-section made in forged, cast or fabricated steel.<\/p>\n
For valve shells with oval, rectangular or non-circular shapes, see 8.6.<\/p>\n
The range of PN or Class designations for which thicknesses are tabulated is:<\/p>\n
PN 2,5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400, Class 150, Class 300, Class 600, Class 900, Class 1 500, Class 2 500, Class 4 500.<\/p>\n
Pressure\/temperature ratings are specified for each material group for the above PN Standard Class and Special Class designations.<\/p>\n
The non-destructive examination procedures and acceptance levels that need to be applied to the valve shell components in order for the valve to be used at Special Class pressure\/temperature ratings are defined.<\/p>\n
Details are also given for the alternative rules for small bore valves of DN 65 and smaller designated as Limited Class.<\/p>\n
This standard does not apply to threaded end valves:<\/p>\n
DN 80 or larger;<\/p>\n<\/li>\n
or which have pressure ratings greater than Class 2 500;<\/p>\n<\/li>\n
or which operate at temperatures greater than 540 \u00b0C.<\/p>\n<\/li>\n<\/ul>\n
Socket welding end valves DN 80 or larger are outside the scope of this standard.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4 Symbols and units <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5 Material groups and material temperature limitations 6 Pressure\/temperature (p\/t) ratings 6.1 General 6.2 Standard rating 6.3 Special Class 6.4 Limited Class 6.5 Intermediate ratings 6.6 Flanged ratings <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 7 Temperature effects 7.1 Temperature limits 7.2 Fluid thermal expansion 8 Dimensions 8.1 Minimum wall thickness 8.2 Inside diameter <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 8.3 Valve body necks <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 8.4 Local areas 8.5 Contours at body ends 8.5.1 Butt welding ends 8.5.2 Socket welding and threaded ends <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 8.6 Additional metal thickness 8.7 Bonnets, cover and connections 8.8 Wafer or flangeless valves <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 9 Auxiliary connections 9.1 General 9.2 Pipe thread tapping 9.3 Socket welding <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 9.4 Butt welding 9.5 Bosses <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 10 End dimensions 10.1 Flanged ends 10.2 Butt welding ends 10.3 Socket welding ends 10.4 Threaded ends 10.5 Intermediate rated socket welding and threaded ends 11 Marking 11.1 Standard rating valves 11.2 Special Class valves <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 11.3 Limited Class valves 11.4 Intermediate rating valves <\/td>\n<\/tr>\n | ||||||
| 74<\/td>\n | Annex A (normative)Methods used for establishing pressure\/temperature ratings A.1 Minimum wall thickness <\/td>\n<\/tr>\n | ||||||
| 75<\/td>\n | A.2 Material properties <\/td>\n<\/tr>\n | ||||||
| 76<\/td>\n | A.3 Pressure\/temperature ratings A.3.1 General <\/td>\n<\/tr>\n | ||||||
| 77<\/td>\n | A.3.2 Selected stress values for steels from group 3E0 to 9E1 A.3.3 Selected stress values for steels from group 10E0 to 16E0 A.3.4 Maximum ratings <\/td>\n<\/tr>\n | ||||||
| 78<\/td>\n | Annex B (informative)Material groups <\/td>\n<\/tr>\n | ||||||
| 80<\/td>\n | Annex C (informative)Special Class C.1 General C.2 Required examination C.2.1 Castings C.2.1.1 General requirements <\/td>\n<\/tr>\n | ||||||
| 81<\/td>\n | C.2.1.2 Volumetric inspection requirements <\/td>\n<\/tr>\n | ||||||
| 82<\/td>\n | C.2.1.3 Surface examination C.2.2 Forgings, bars, plates and tubular products <\/td>\n<\/tr>\n | ||||||
| 83<\/td>\n | C.2.3 Drop forgings C.2.4 Welded fabrication C.2.5 Defect removal and repair \u2014 Repair by welding <\/td>\n<\/tr>\n | ||||||
| 89<\/td>\n | C.3 Method for establishing Special rating C.3.1 Methods for all materials <\/td>\n<\/tr>\n | ||||||
| 90<\/td>\n | C.3.2 Special ratings <\/td>\n<\/tr>\n | ||||||
| 110<\/td>\n | Annex D (informative)Radiographic procedure and acceptance standards D.1 Radiographic procedure <\/td>\n<\/tr>\n | ||||||
| 111<\/td>\n | D.2 Acceptance standards <\/td>\n<\/tr>\n | ||||||
| 112<\/td>\n | Annex E (informative)Magnetic particle examination procedure and acceptance standards E.1 General E.2 Acceptance standards E.2.1 Castings E.2.1.1 Linear indications E.2.1.2 Rounded\/non-linear indications E.2.1.3 Procedure E.2.2 Forgings and rolled or wrought material and drop forgings E.2.2.1 Linear indications <\/td>\n<\/tr>\n | ||||||
| 113<\/td>\n | E.2.2.2 Procedure <\/td>\n<\/tr>\n | ||||||
| 114<\/td>\n | Annex F (informative)Liquid penetrant examination procedure and acceptance standards F.1 Procedure F.2 Acceptance criteria F.2.1 Castings F.2.1.1 Linear indications F.2.1.2 Rounded\/non-linear indications F.2.2 Forgings, rolled or wrought material and drop forgings F.2.2.1 Linear indications F.2.2.2 Procedure <\/td>\n<\/tr>\n | ||||||
| 115<\/td>\n | Annex G (informative)Ultrasonic examination procedure and acceptance standards G.1 Procedure for forgings and rolled or wrought material G.1.1 General G.1.2 Extent of examination G.1.3 Acceptance standards G.2 Procedure for castings G.2.1 General G.2.2 Extent of examination G.2.3 Acceptance standards <\/td>\n<\/tr>\n | ||||||
| 116<\/td>\n | Annex H (informative)Requirement for Limited Class valves in sizes DN 65 and smaller H.1 General H.2 Limited Class rating method <\/td>\n<\/tr>\n | ||||||
| 117<\/td>\n | H.3 Dimensions H.3.1 General H.3.2 Inside diameter H.3.3 Wall thickness H.3.4 Valve body necks H.3.5 Contours for body run transitions H.3.6 Additional metal thickness <\/td>\n<\/tr>\n | ||||||
| 118<\/td>\n | H.3.7 Welded fabrication <\/td>\n<\/tr>\n | ||||||
| 119<\/td>\n | Annex I (informative)ASTM\/ASME material I.1 General I.2 Material groups <\/td>\n<\/tr>\n | ||||||
| 120<\/td>\n | I.3 Minimum wall thickness I.4 Material properties I.5 Pressure\/temperature ratings I.5.1 Standard rating I.5.1.1 \ufeff!Method for steels from group 1C1 to 1C15″ I.5.1.2 \ufeff! Method for steels from group 2C1 to 2C8″ I.5.2 Special rating <\/td>\n<\/tr>\n | ||||||
| 198<\/td>\n | Annex J (informative)Relationship between DN, NPS, pipe inside diameter Dni, pipe outside diameter OD <\/td>\n<\/tr>\n | ||||||
| 202<\/td>\n | Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2014\/68\/EU (PED) aimed to be covered <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Industrial valves. Shell design strength – Tabulation method for steel valve shells<\/b><\/p>\n |