This document specifies the basic technical requirements and model compilation method for inlet valves for large and medium-sized hydraulic turbines. It describes the test methods. This document applies to the design, manufacture and acceptance of turbine inlet valves. butterfly valves with a nominal diameter of 1000 mm~10000 mm and ball valves with a nominal diameter of 500 mm~5000 mm. Other butterfly valves and ball valves (including storage pumps, water regulating pumps and pump-turbines) shall be implemented in accordance with this document.
Basic Data
Standard ID
GB/T 14478-2025 (GB/T14478-2025)
Description (Translated English)
Basic technical specification of inlet valves for large and medium-sized hydraulic turbines
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
K55
Classification of International Standard
27.140
Word Count Estimation
18,194
Date of Issue
2025-02-28
Date of Implementation
2025-09-01
Issuing agency(ies)
State Administration for Market Regulation, China National Standardization Administration
