GB/T 12221-2005Metal valves -- Face to face, end to end, center to face and center to end dimensions (English PDF)

Foreword

This Standard modifies and adopts ISO 5752.1982 "Metal Valves for Use in Flanged

Pipe Systems - Face-to-face and centre-to-face Dimensions". Compared with ISO

5752.1982, the main differences in this Standard are as follows.

— Structure and drafting rules of this Standard are in accordance with GB/T

1.1-2000;

— This Standard adopts some definitions in Chapter 2 of ISO 5752.1982;

— Chapter 4 "Terminology" of ISO 5752.1982 was deleted from this Standard.

Compared with GB/T 12221-1989, the main changes in this Standard are as follows.

— Standard name is changed; the scope of application is extended from flange

connection to welded end, wafer type, female thread and male thread.

— Add the basic structural lengths of welded ends, wafer type valves, female

threads and male threads, AND structural length dimensions of various valves;

— Valve dimensions with flanged joint adopt ISO 5752.1982;

— Basic series dimensions in Table 1 of original standard were modified. series 6

and 17 (no available data) were deleted; series 25, which is not applicable to

flanged joint, was placed to the basic series dimensions of wafer type

connecting valves;

— Dimension list of same-type series gate valves in Table 2 of original standard

was deleted.

This Standard replaces GB/T 12221-1989 "Metal Valves for Use in Flanged Pipe

Systems - Face-to-Face, and Center-to-Face Dimensions" and GB/T 15188.1 ~

15188.4-1994 "Face-to-Face, Centre-to-Face, End-to-End and Centre-to-End

Dimensions of Valves".

This Standard was proposed by China Machinery Industry Federation.

This Standard shall be under the jurisdiction of the National Technical Committee on

Valves of Standardization Administration of China (SAC/TC 188).

Drafting organizations of this Standard. Hefei General Machinery Research Institute,

Hubei Hongcheng General Machinery Co., Ltd., Shanghai Research Institute of

General Machinery Co., Ltd., CNNC SUFA Technology Industry Co., Ltd., Zhejiang

Wuzhou Valve Co., Ltd. AND Shenyang Shengshi High & Medium Pressure Valve Co.,

Ltd.

Drafting staffs of this Standard. Wang Xiaojun, Wang Hongyun, Kong Biaolong, Chen

Jianping, Zheng Zuhui, Zheng Yunhai, Liu Xiaochun and Ye Qin.

The previous editions replaced by this Standard are as follows.

— GB/T 12221-1989, GB/T 15188.1 ~ 15188.4-1994.

Metal Valves - Face to Face, End to End, Center to

Face and Center to End Dimensions

1 Scope

This Standard specifies the basic series of face-to-face, centre-to-face, end-to-end

and centre-to-end dimensions of flanged joint valves, welded end valves, wafer type

connection valves, female thread connection valves, male thread connection valves,

and the permissible variations of structural dimensions.

This Standard is applicable to the face-to-face, centre-to-face, end-to-end and

centre-to-end dimensions of gate valves, stop valves, ball valves, butterfly valves,

plug valves, diaphragm valves and check valves with nominal pressure (PN) <= 42.0

MPa and nominal diameter of DN 3 mm ~ DN 4 000 mm.

2 Normative References

The following normative documents contain provisions which, through reference in

this text, constitute provisions of this Standard. For dated references, the subsequent

amendments or revisions of these publications do not apply. However, parties who

enter into agreements based on this Standard are encouraged to investigate the

possibility of applying the most recent editions of the normative documents indicated

below.

GB/T 1047 Pipework Components - Definition and Selection of DN (Nominal Size)

(GB/T 1047-2005, ISO 6708.1995, MOD)

GB/T 1048 Pipework Components - Definition and Selection of PN (GB/T

1048-2005, ISO 7268.1996, MOD)

3 Definitions

102 — —

— — — — —

15 108 140 165 165 264

20 117 152 190 190 273

25 127 165 216 133 216 140 254 140 254 186 308

32 140 178 229 146 229 165 279 165 279

40 165 190 241 152 241 178 305 178 305 384

50 216 216 292 178 292 216 368 216 368 279 451

65 241 241 330 216 330 254 419 254 419 330 508

80 283 283 356 254 356 305 381 305 470 368 578

100 305 305 406 305 432 356 457 406 546 457 673

125 381 381 457 381 508 432 559 483 673 533 794

300 502 635 850 502 635 850 502 850 762 838 965 1130 1422

350 572 762 980 572 762 980 762 980 826 889 1029 1257

400 610 838 1100 610 838 1100 838 1100 902 991 1130 1384

— — —

978 1092 1219

500 711 991 711 991 1054 1194 1321

550 — 1092 — 1092 1143 1295 —

600 813 1143 813 1143 1232 1397 1549

1245 1308 1448

700 1346 1346 1397 1549

750 1397 1397 1524 1651

800 1524 1524 1651 1778

850 1626 1626 1778 1930

900 2083 2083 1880 2083

Basic

series H16 H17 H18 H16 H17 H18 H2 H18 H3 H5 H7 H9 H11

32 — 229 229 279 279 349

40 241 241 241 305 305 384

50 267 267 283 292 292 368 368 451

65 305 305 330 330 330 419 419 508

80 330 330 387 356 356 381 470 578

100 356 356 457 406 559 432 457 546 673

125 381 381 — 457 — 508 559 673 794

150 457 457 559 495 711 559 610 705 914

200 521 521 686 597 845 660 737 832 1022

250 559 559 826 673 889 787 838 991 1270

300 635 635 965 762 1016 838 965 1130 1422

889 — 1257

400 838 902 991 1130 1384

450 914 978 1092 — 1537

500 991 1054 1194 1321 1664

Table 17 Wafer Type Swing Check Valves' Structure Dimensions

Dimensions in millimetres

Nominal size

DN

Nominal pressure PN (MPa)