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GB/T 12233-2025: General purpose industrial valves - Casting iron globe valves and lift check valves
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 12233-2025	English	279	Add to Cart	3 days [Need to translate]	General purpose industrial valves - Casting iron globe valves and lift check valves
GB/T 12233-2006	English	339	Add to Cart	3 days [Need to translate]	General purpose industrial valves -- Casting iron globe valves and lift check valves
GB/T 12233-1989	English	399	Add to Cart	3 days [Need to translate]	General purpose industrial valves--Casting iron globe valves and lift check valves

GB/T 12233-2025: General purpose industrial valves - Casting iron globe valves and lift check valves

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ICS 23.060.50 CCSJ16 National Standards of the People's Republic of China Replaces GB/T 12233-2006 General purpose valves. iron gate valves and lift check valves Published on 2025-10-31 Implemented on May 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of contents

Preface III 1.Scope 1 2 Normative References 1 3.Terms and Definitions 1 4.Structural type and model designation 1 4.1 Structural Type 1 4.2 Model Numbering 3 5.Technical Requirements 3 5.1 Structural length 3 5.2 Connection Dimensions 4 5.3 Pressure-Temperature Ratings 4 5.4 Materials 4 5.5 Valve body 4 5.6 Valve cover 5 5.7 Valve disc and valve seat 5 5.8 Valve stem and valve stem nut 5 5.9 Packing 6 5.10 Packing gland 6 5.11 Bracket 6 5.12 Handwheel 6 5.13 Performance Requirements 6 6.Test Methods 7. 6.1 Shell strength 7 6.2 Sealing performance 7 6.3 Top sealing test 7 6.4 Static pressure life test 7 6.5 Minimum wall thickness of valve body 7 6.6 Appearance 7 7 Inspection Rules 7 7.1 Factory Inspection 7 7.2 Type Testing 8 8.Markings, Labels, and Accompanying Documents 8.1 Mark 8 8.2 Markings on the valve body 8 8.3 Markings on the nameplate 8 8.4 Tags 9 8.5 Accompanying Documents 9 9.Packaging, Transportation and Storage 9.1 Packaging 9 9.2 Transportation 9 9.3 Storage 9 Figure 1.Internal threaded shut-off valve 2 Figure 2 Flange-connected gate valve 2 Figure 3.Internal threaded lift check valve. Figure 4.Flange-connected lift check valve 3 Table 1.Structural Length 4 Table 2 Minimum wall thickness of valve body and valve cover 4 Table 3 Minimum valve stem diameter 5 Table 4.Static pressure life cycles of gate valves (7) Table 5.Inspection Items (8)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document supersedes GB/T 12233-2006 "General Valves - Iron Gate Valves and Lift Check Valves", and is consistent with GB/T 12233-2006. In comparison, aside from structural adjustments and editorial changes, the main technical changes are as follows. a) The scope of application has been changed (see Chapter 1, Chapter 1 of the.2006 edition); b) The parameter has been removed (see 3.3 in the.2006 version); c) Working conditions have been removed (see 4.2 in the.2006 edition); d) The length of the internal threaded connection structure has been changed (see Table 1,.2006 edition); e) The minimum wall thickness requirements for the valve body and bonnet have been changed (see Table 2,.2006 edition); f) The minimum valve stem diameter requirement has been changed (see 5.8.1, 4.6.1 in the.2006 edition); g) Added valve stem forming requirements (see 5.8.5); h) The requirements for the packing material have been changed (see 5.9, 4.7 of the.2006 edition); i) The requirement for leakage of lift check valves has been removed (see 4.12.1 in the.2006 edition); j) The requirements for the static pressure life cycles of the shut-off valve have been changed (see Table 4, Table 5 in the.2006 edition); k) Additional test method requirements for minimum wall thickness and appearance have been added (see 6.5, 6.6); l) The inspection rules have been changed (see Chapter 7, Chapter 6 of the.2006 edition); m) The logo, labels, and accompanying files have been changed (see Chapter 8, Chapter 7 of the.2006 edition); (n) Added packaging, transportation, and storage (see Chapter 9). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the China Machinery Industry Federation. This document is under the jurisdiction of the National Technical Committee on Valve Standardization (SAC/TC188). This document was drafted by. Anhui Baihu Valve Factory Co., Ltd., Zhongfa Holding (Group) Co., Ltd., and Taizhou Special Equipment Inspection Bureau. Inspection and Testing Institute, Anhui Hongxing Valve Co., Ltd., Shanghai Guanlong Valve Energy-Saving Equipment Co., Ltd., Hangzhou Chunjiang Valve Co., Ltd. Yuanda Valve Group Co., Ltd., Shanghai Hang Technology Group Co., Ltd., Shanghai Biaoyi Valve Co., Ltd., Gaote Holding Group Co., Ltd., Shandong Yibaitong Valve Co., Ltd., Lixin Valve Group Co., Ltd., Jiangsu Tenglong Petrochemical Machinery Co., Ltd., and Danyang Zhongxin Huahai Clean Energy Co., Ltd. Limited Liability Company, Suzhou Kedi Fluid Control Equipment Co., Ltd., and Kaifeng High and Medium Pressure Valve Co., Ltd. The main drafters of this document are. Huang Jie, Chen Zhiwen, Jin Zhongping, Yan Jie, Ye Biao, Zhang Xinbo, Li Chao, Chen Wengong, Huang Zhimin, and Chen Yuxi. Lü Guoqin, Jin Jianhai, Dai Yiming, Wang Jun, Zha Zhengzhi, and Wang Qinghe. This document was first published in 1989, revised for the first time in.2006, and this is the second revision. General purpose valves. iron gate valves and lift check valves

1 Scope

This document specifies the structural types, model designations, technical requirements, test methods, and inspection rules for iron gate valves and lift check valves. Markings, labels and accompanying documents, as well as packaging, transportation and storage. This document applies to internal containers with a nominal pressure not exceeding PN16, nominal size DN15~DN200, and applicable medium temperature not exceeding.200℃. Design, production and inspection of iron gate valves and lift check valves with threaded and flanged connections.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 191 Pictorial Symbols for Packaging and Storage GB/T 5796.3 Trapezoidal Threads - Part 3.Basic Dimensions GB/T 5796.4 Trapezoidal Threads - Part 4.Tolerances GB/T 7307 55° Non-sealing pipe thread GB/T 12220 Industrial Valve Marking GB/T 12221 Structural Length of Metal Valves GB/T 12222 Connection of multi-turn valve actuators GB/T 13927 Pressure Testing of Industrial Valves GB/T 13927-2022 Pressure Testing of Industrial Valves GB/T 17241.1 Cast iron pipe flanges - Part 1.PN series GB/T 32808 Valve Model Numbering Method JB/T 5300 Guidelines for the Selection of Materials for Industrial Valves JB/T 8859 Test Procedure for Static Pressure Life of Gate Valves

3 Terms and Definitions

This document does not contain any terms or definitions that need to be defined. 4.Structural type and model designation 4.1 Structural Type 4.1.1 The typical structure of a stop valve is shown in Figure 1 and Figure 2. ...