Standard No.:	GB/T 14478-2012
English Name:	Fundamental technical requirements for large and medium inlet valves of hydraulic turbine
Chinese Name:	大中型水轮机进水阀门基本技术条件
Chinese Classification:	K55    Water turbine and its auxiliary equipment
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ;SAC
Issued on:	2012-6-29
Implemented on:	2012-11-1
Status:	superseded
Superseded by:	GB/T 14478-2025 Basic technical specification of inlet valves for large and medium-sized hydraulic turbines
Superseded on:	2025-9-1
Abolished on:	2025-09-01
Superseding:	GB/T 14478-1993 Fundamental technical requirements for large and medium inlet valves of hydraulic turbine
Target Language:	English
File Format:	PDF
Word Count:	5000 words
Translation Price(USD):	80.0
Delivery:	via email in 1 business day

1 Scope This Standard specifies fundamental technical requirements and model compilation methods etc. for large and medium inlet valves of hydraulic turbine. This Standard is applicable to the butterfly valve at a nominal diameter of inlet valve of hydraulic turbine of 1,000mm~10,000mm and the globe valve at a nominal diameter of 500mm~5,000mm. Butterfly and globe valves of others (including storage pump and pump-turbine) may refer to this Standard. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest editions of the normative documents (include all the amendments) apply. GB 150 (all parts) Pressure Vessels GB/T 191 Packaging - Pictorial Marking for Handling of Goods GB/T 8564 Specification Installation of Hydraulic Turbine Generator Units GB/T 15468 Fundamental Technical Requirements for Hydraulic Turbines GB/T 2900.45 Electrotechnical Terminology - Hydroelectric Powerplant Machinery (GB/T 2900.45-2006, IEC/TR 61364:1999, MOD) GB/T 28546 Specification for Package, Transportation and Storage of Large and Medium Hydraulic Units HG 4-329 Rubber Sealing Products (Circular) Book I, Volume VIII, ASME 3 Terms and Definitions

Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Technical Requirements 5 Test 6 Installation and Operation 7 Supply Scope of Complete Set 8 Acceptance and Warranty 9 Nameplate, Packaging, Transportation and Storage Appendix A (Normative) Model Compilation Method of the Inlet Valve Appendix B (Informative) Spare Parts of Inlet Valve