GB 28378-2019 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 28378-2019 | English | 135 |
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Minimum Allowable Values of Water Efficiency and Water Efficiency Grades for Showers
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| GB 28378-2012 | English | 90 |
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Minimum allowable values of water efficiency and water efficiency grades for showers
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GB 28378-2019: Minimum Allowable Values of Water Efficiency and Water Efficiency Grades for Showers
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB28378-2019
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.060
Y 71
Replacing GB 28378-2012
Minimum Allowable Values of Water Efficiency
and Water Efficiency Grades for Showers
Issued on. DECEMBER 31, 2019
Implemented on. JULY 01, 2020
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 5
4 Water Efficiency Grade of Shower... 6
5 Technical Requirements... 6
6 Test Methods... 7
Appendix A (Normative) Test Methods... 8
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB 28378-2012 Minimum Allowable Values of Water Efficiency
and Water Efficiency Grades for Showers. Compared with GB 28378-2012, this
Standard has the major technical changes as follows.
--- Modify the scope of the standard;
--- Modify some terms and definitions;
--- Modify the basic requirements;
--- Add the spray force requirements;
--- Modify the water efficiency grade index of the shower;
--- Modify the uniformity index of the flowrate.
This Standard was proposed by Standardization Administration of China, and
Resource Conservation and Environmental Protection Department of National
Development and Reform Commission.
This Standard shall be under the jurisdiction of Standardization Administration of China.
Drafting organizations of this Standard. Jomoo Kitchen & Bath Co., Ltd.; China
National Institute of Standardization; Guangzhou Monalisa Sanitary Ware Co., Ltd.;
Guangdong Yuehua Home Co., Ltd.; National Center for Supervision & Inspection of
Drainage Irrigation & Water-Saving Equipment Products Quality; Xiamen Water
Nymph Sanitary Technology Co., Ltd.; Anhui Product Quality Supervision & Inspection
Research Institute; Guangdong Huayi Plumbing Fittings Industry Co., Ltd.; Hegii Group
Co., Ltd.; Quanzhou Lianchuang Kitch & Bathroom Co., Ltd.; Foshan Jiajia Sanitary
Ware Co., Ltd.; Qingdao Economic & Technology Development Zone Haier Water
Heater Co., Ltd.; Foshan Dongpeng Sanitary Ware Co., Ltd.; Hansgrohe Sanitary
Products (Shanghai) Co., Ltd.; Xiamen Solex High-Tech Industries Co., Ltd.;
Guangdong Weixiang Sanitary Ware Co., Ltd.; Kaiping Himark Sanitary Ware Co., Ltd.;
Taizhou Shenhu Sanitary Co., Ltd.; Yinchao Sanitary Ware Co., Ltd.; Guangdong
Konna Sanitary Technology Co., Ltd.; Guangdong Toyo Sanitary Ware Equipment Co.,
Ltd.; Guangdong Creation Trend Yuge Technology Co., Ltd.; Zhejiang Furniture and
Hardware Research Institute; Foshan Supervision Testing Center of Quality and
Metrology; China Quality Certification Center; and China Building Material Test &
Certification Group (Shaanxi) Co., Ltd.
Chief drafting staffs of this Standard. Zhu Shuangsi, Bai Xue, Zhang Fan, Lin Xiaowei,
Fang Huaming, Zhu Xuedan, Xie Xiaojun, Cai Rong, Ding Weigang, Ding Yanfei, Xie
Yuerong, Li Hongshun, Liu Chuan, Zhou huaqiang, Cai Yudong, Zeng Tiansheng, Lei
Ting, Liu Zhiqiang, Chen Shiqing, Yuan Qing, Huang Yuanfang, Ding Zuohao, Han
Yuanyang, Ruan Weiguang, Li Jianhai, Zheng Hongbo, Huang Yinchao, Chen Shuding,
Jiang Conggao, Qiu Taohui, Shao Zhenghui, Zhu Yijun, Huang Jinfei, Lai Yanling, Wu
Zhaohui, Yuan Liangyue, Huang Xiaoyan, and Yin Jun.
This Standard was first-time published in April, 2012; it is the first-time revision.
Minimum Allowable Values of Water Efficiency
and Water Efficiency Grades for Showers
1 Scope
This Standard specifies the water efficiency grade, technical requirements and test
methods of showers.
This Standard is applicable to the water efficiency evaluation for the showers (including
sprinkler or sprinkler combinations) that is used in the shower room and other sanitary
facilities, and that is installed at the end of the cold and hot water supply pipelines in
the building, with a nominal pressure (static pressure) no greater than 1.0MPa, and
medium temperature of 4°C ~90°C.
This Standard is not applicable to showers with their own heating device and
thermostatic showers.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) is applicable to this document.
GB/T 33733 Terminology and Classification for the Kitchen and Sanitary Ware
Fittings
3 Terms and Definitions
For the purpose of this document, the terms and definitions given in GB/T 33733 and
the following apply.
3.1 Uniformity of flow; ΔF
Under different test pressures, the difference between the highest average flowrate
and the lowest average flowrate of the hand-held sprinkler for the shower.
3.3 Evaluating values of water conservation for showers
Under the test conditions specified in the standard, the maximum flowrate allowed by
the water-saving shower.
3.4 Spray force; P
Under the test conditions specified in the standard, the impact force reached by the
spraying of the hand-held sprinkler for the shower.
4 Water Efficiency Grade of Shower
4.1 The water efficiency grade of shower is divided into 3 grades, of which Grade-3
has the lowest water efficiency.
4.2 The flowrate of each grade of shower shall meet the requirements of Table 1.
4.3 If the hand-held sprinkler has multiple water outlet methods, respectively test the
flowrate of each water outlet method; and use the water efficiency grade achieved by
the maximum flowrate as the water efficiency grade of the shower.
5 Technical Requirements
5.1 Basic requirements
The shower shall meet the requirements of the expressly implemented standards.
5.3 Uniformity of flow
Test according to Appendix A, the maximum water flow uniformity of the hand-held
sprinkler for the shower shall be no greater than 4.0 L/min.
5.4 Minimum allowable values of water efficiency for showers
The minimum allowable values of water efficiency for showers indicate Grade-3 water
efficiency.
6 Test Methods
The test methods for spray force, flowrate and uniformity of flow for showers shall be
implemented in accordance with Appendix A.
Appendix A
(Normative)
Test Methods
A.1 Spray force test
A.1.1 Spray force test device
Use the following test devices, and other test devices with the same effect may also
be used.
A.2.1.2 Test device
A.2.1.2.1 The schematic diagram of the test device is shown in Figure A.2 a) or b).
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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