QB/T 2806-2017 English PDF (QBT2806-2017)

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QB/T 2806-2017: Thermotatie faucets
QB/T 2806-2017
LIGHT INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 91.060
Classification number: Y71
Registration number: 59735-2017
Replacing QB/T 2806-2006
Thermostatic faucets
温控水嘴
ISSUED ON: JULY 07, 2017
IMPLEMENTED ON: JANUARY 01, 2018
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 6 
4 Classification and naming ... 8 
5 Conditions of use ... 8 
6 Materials ... 9 
7 Supporting devices ... 9 
8 Requirements ... 9 
9 Single-handle three-control thermostatic faucet ... 17 
10 Test methods ... 19 
11 Inspection rules ... 24 
12 Marking, packaging, transportation, storage ... 27 
Appendix A (Normative) Size of faucet ... 29 
Appendix B (Normative) Test of temperature stability of outlet water ... 44 
Appendix C (Normative) Safety test (all models) ... 47 
Appendix D (Normative) Test of service life ... 48 
Appendix E (Normative) Test of flow regulator’s torque ... 50 
Appendix F (Normative) Test of temperature regulator’s torque ... 51 
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is a revision of QB 2806-2006 “Thermostatic faucets”. Compared
with QB 2806-2006, except editorial changes, the main technical changes are
as follows:
- CHANGE the nature of this standard to recommended;
- ADD the requirements for the amount of metal contaminant released by the
thermostatic faucet;
- MODIFY the material requirements;
- ADD the supporting equipment;
- DELETE the surface quality requirements for rubber parts;
- DELETE the hardness requirements for ceramic valve;
- DELETE the P-type thermostatic faucet;
- ADD the single-handle three-control thermostatic faucet;
- MODIFY the outlet water temperature from 38 °C to 40 °C;
- MODIFY the requirements for surface corrosion resistance;
- ADD the safety requirements for hot-water loss.
This standard was proposed by the China Light Industry Association.
This standard shall be under the jurisdiction of the National Hardware
Standardization Technical Committee Construction Hardware Subcommittee
(SAC/TC 174/SC 3).
Drafting organizations of this standard: Zhuhai Shulima Temperature Control
Sanitary Equipment Co., Ltd., Zhuhai Pulemei Kitchen and Bath Co., Ltd., Ningbo
Aimeike Copper Valve Co., Ltd., Guangdong Huayi Sanitary Ware Co., Ltd.,
Guangzhou Moen Plumbing Equipment Co., Ltd., China Hardware Products
Association, Xiamen Songlin Technology Co., Ltd., Taizhou Guoren
Temperature Control Sanitary Ware Co., Ltd., Guangdong Hengjie Sanitary
Ware Co., Ltd., Rifeng Enterprise Group Co., Ltd., Yading Creative Home Co.,
Ltd., Ningbo Aoleishi Sanitary Ware Co., Ltd., Zhongyu Building Materials
Group Co., Ltd., Shanghai Jianke Inspection Co., Ltd., Foshan Quality
Measurement Supervision and Inspection Center, Shanghai Construction
Hardware Industry Research Institute Co., Ltd.
Thermostatic faucets
1 Scope
This standard specifies the terms and definitions, classification and naming,
conditions of use, materials, supporting devices, requirements, single-handle
three-control thermostatic faucets, test methods, inspection rules, marking,
packaging, transportation and storage of thermostatic faucets.
This standard applies to the cold-water and hot-water mixed faucet which is at
nominal pressure, has an ordinary-water-pressure of not more than 0.5 MPa
and a high-water-pressure of not more than 2 MPa, a cold-water temperature
of 4 °C ~ 29 °C and a hot-water temperature of 45 °C ~ 85 °C, is mounted on
the sanitary facilities in the washroom (toilets, bathroom, etc.), kitchen and so
on, whose outlet water temperature is automatically controlled by the pre-
selected temperature.
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) are applicable to this standard.
GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1:
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 5270-2005 Metallic coatings on metallic substrates - Electrodeposited
and chemically deposited coatings - Review of methods available for testing
adhesion
GB/T 6461-2002 Methods for corrosion testing of metallic and other
inorganic coatings on metallic substrates - Rating of test specimens and
manufactured articles subjected to corrosion tests
GB/T 7306.1 Pipe threads with 55 degree thread angle where pressure-tight
joints are made on the threads - Part 1: Parallel internal and taper external
threads
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight
joints are made on the threads - Part 2: Taper internal and external threads
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight
joints are not made on the threads
GB/T 9286-1998 Paints and varnishes - Cross cut test for films
GB/T 10125-2012 Corrosion tests in artificial atmospheres - Salt spray tests
GB 18145-2014 Ceramic cartridge faucets
GB/T 23447 Shower outlets for bathing
GB/T 23448 Flexible hose for sanitary tapware
JC/T 932 Drainage fittings for sanitary wares
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Thermostatic faucets
The faucets which, when the inlet water temperature and pressure change
within a certain range, automatically adjust the incoming flowrate of cold-
water and hot-water, to stabilize the outlet water temperature in a certain
range.
3.2
Single handle, double handle
The quantity of handles or handwheels which control the outlet water
temperature, flowrate, open-close of the faucets. Single handle refers to
using one handle or handwheel to control the outlet temperature or both
flowrate and open-close. Double handle refers to using two handles or
handwheels to respectively control the outlet water temperature, flowrate
and open-close.
3.3
Single handle double control, single handle three control
Single-handle double control refers to using one handle or handwheel to
control the outlet water temperature and open-close. Single-handle three-
control refers to using one handle or handwheel to control the outlet water
temperature, flowrate, open-close.
The thermostatic faucets which are used at the hydraulic pressure of 0.1
MPa ~ 2.0 MPa.
4 Classification and naming
4.1 Classification
4.1.1 According to the number of control handles, it is divided into single-handle
and double-handle.
4.1.2 According to the type of temperature control, it is divided into constant-
temperature faucet (hereinafter referred to as T) and constant-temperature
constant-pressure faucet (hereinafter referred to as TP).
4.1.3 According to the location of use, it is divided into shower, bathtub, washing,
basin, electric water heater, solar water heater, pipeline valve and so on.
4.1.4 According to the form of installation, it is divided into exposed-installation
and concealed-installation.
4.1.5 According to the use pressure, it is divided into ordinary-water-pressure
and high-water-pressure.
4.2 Naming
The name shall include the number of control handles, the type of temperature