This document specifies the water efficiency grades, technical requirements, test methods and test equipment for water closets. This document applies to water closets installed on cold water pipes in building facilities, which use water as the main flushing medium, have water sealing function and do not have warm water cleaning function.
Basic Data
Standard ID
GB 25502-2024 (GB25502-2024)
Description (Translated English)
Minimum allowable values of water efficiency and water efficiency grades for water closets
Sector / Industry
National Standard
Classification of Chinese Standard
Q31
Classification of International Standard
91.140.70
Word Count Estimation
18,196
Date of Issue
2024-10-28
Date of Implementation
2025-05-01
Older Standard (superseded by this standard)
GB 25502-2017
Issuing agency(ies)
State Administration for Market Regulation, China National Standardization Administration
