GB/T 23447-2023 PDF English
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| GB/T 23447-2023 | English | 440 |
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Sanitary ware - Shower for bathing
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| GB/T 23447-2009 | English | 145 |
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Shower outlets for bathing
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GB/T 23447-2023: Sanitary ware - Shower for bathing---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/GBT23447-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.140.70
CCS Q 31
Replacing GB/T 23447-2009
Sanitary ware - Shower for bathing
Issued on. AUGUST 06, 2023
Implemented on. MARCH 01, 2024
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 Materials... 6
5 Technical requirements... 6
6 Test methods... 10
7 Inspection rules... 20
8 Marking, packaging, transportation, storage... 23
Appendix A (Normative) Temperature drop test method... 24
Appendix B (Normative) Test method for shower average jet angle... 28
Appendix C (Normative) Jet force test method... 36
1 Scope
This document specifies the materials, technical requirements, test methods, inspection
rules, marking, packaging, transportation, storage of shower for bathing (hereinafter
referred to as shower).
This document is applicable to showers, which have dynamic pressures of 0.05 MPa ~
0.50 MPa and water temperatures of 4 °C ~ 70 °C.
2 Normative references
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For the dated references, the subsequent amendments
(excluding corrections) or revisions do not apply to this Standard; however, parties who
reach an agreement based on this Standard are encouraged to study if the latest versions
of these documents are applicable. For undated references, the latest edition of the
referenced document applies.
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1.Sampling
schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 6461 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 7307 Pipe threads with 55 degree thread angle where pressure-tight joints are
not made on the threads
GB/T 9286 Paints and varnishes - Cross-cut test
GB/T 10125 Corrosion tests in artificial atmospheres - Salt spray tests
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Shower
A device used for showering that allows water to flow out in the form of small
droplets or jets.
Note. Showers can generally be divided into two types. hand-held showers and head
showers.
3.2 Hand-held shower
A shower, that is installed on a fixed or movable bracket and connected by a hose,
meanwhile can be freely moved or controlled by the showerer within a certain space.
3.3 Head shower
A shower, that is fixed on the top or side of the user and sprays the user directly from
above or from the side.
4 Materials
The materials used in the product shall not pollute the water quality; the use of easily
corroded materials is not allowed.
5 Technical requirements
5.1 Appearance quality
5.1.1 The outer surface of copper castings shall not have defects such as shrinkage
cavities, blisters, cracks, pores; the inner cavity shall not have molding sand adhering to it.
5.1.2 The outer surface of plastic parts shall not have obvious defects, such as ripples,
scratches, modification damage, etc.
5.1.3 All surfaces, that are accessible to the human body during use, shall not have sharp
edges and corners, that may cause harm to the human body.
5.1.4 After installation, there shall be no un-plated areas on the electroplated surface.
The surface shall be bright and even; no peeling, peeling, blistering or other phenomena are allowed.
5.2 Pipe thread accuracy
The pipe thread accuracy of the external connection of the shower shall comply with
the B-level accuracy requirements in GB/T 7307.Special threads as per contract requirements.
5.3 Safety performance
5.3.1 Conduct the test in accordance with 6.3.1.Each component of the shower shall be
flexible; the shower shall have no obvious deformation; its water jet pattern shall not change.
5.3.2 Conduct the test in accordance with 6.3.2.Each component of the shower shall be
flexible; the shower head shall have no obvious deformation; its water jet pattern shall not change.
5.4 Surface coating and plating quality
5.5 Sealing performance
Carry out the test in accordance with the provisions of 6.5.There shall be no leakage at
the connection parts of each component.
5.6 Mechanical strength
Carry out test in accordance with 6.6.There shall be no cracks, visible permanent
deformation or other damage. After test, it shall meet the requirements of 5.5.
5.9 Tensile properties
Carry out the test in accordance with the provisions of 6.9.There shall be no obvious
damage or any leakage on the shower and its connecting parts.
5.10 Resistance to installation loads
The installation load resistance of the threads of the shower’s connection pipe shall be
tested in accordance with the provisions of 6.10 and Table 2.After the test, the threads
shall have no cracks or damage AND meet the requirements of 5.5.
5.11 Temperature drop
The test is carried out in accordance with the provisions of 6.11.The temperature drop
shall not be greater than 3 °C.
5.14 Anti-siphon performance of handheld showers
In the shower system, when the connecting parts other than the handheld shower, such
as hoses and faucets, do not have anti-siphon devices, the handheld shower shall have
an anti-siphon function. The anti-siphon performance is tested, in accordance with the
provisions of 6.14; there is no visible water level in the transparent tube.
5.15 Ball joint swing performance
For movable head showers or shower heads with ball connections, this test shall be
carried out. After 10000 cycles in accordance with the provisions of 6.15, there shall be
no leakage at the ball connection part and shall meet the requirements of 5.19.
5.16 Average jet angle
The test is carried out in accordance with the provisions of 6.16.The range of the
average jet angle shall be 0° ≤ α ≤ 8°. This item is only available if contractually required.
5.17 Spray uniformity
Carry out the test according to the provisions of 6.17.Within the range of 120 mm
diameter of the water collection pan, the volume of water received shall not be greater
than 70% and not less than 40% of the total water volume. Within the range of 420 mm
diameter of the water collection pan, the volume of water received shall not be less than
95% of the total water volume. Spray uniformity test is only performed, when required
by contract.
5.18 Function switching force
For multi-functional showers, when tested in accordance with the provisions of 6.18,
the function switching force or torque shall not be greater than 45 N or 1.7 N·m. For
products designed for people with disabilities, before and after the life test, the function
switching force or torque shall not be greater than 22 N.
5.19 Ball head swing force
For movable head showers with ball connections, the ball head swing force shall be
tested in accordance with the provisions of 6.19 and shall not exceed 45 N.
5.20 Drop test
Handheld showers are tested in accordance with the provisions of 6.20.Deformation or
cracks that affect safety and normal operation are not allowed. Parts that are separated
or fell off during the test can be reinstalled and the sample shall maintain normal
functions. After the test, the handheld shower shall comply with the requirements of 5.5.
6 Test methods
6.1 Appearance quality test method
Make a visual inspection, at a distance of 600 mm ± 50 mm from the shower, under the
lighting conditions of 300 lx ± 20 lx.
6.2 Pipe thread accuracy test method
The pipe thread accuracy of the external connection part of the shower is measured by
a thread gauge of corresponding accuracy.
6.3 Safety performance test
6.4 Surface coating and plating quality test methods
6.4.1 Rapid cooling & heating performance test
The testing steps for quality requirements for surface coating and plating of plastic parts
are as follows.
6.4.2 Corrosion resistance test
After conducting a 24 h ± 10 min acid salt spray test according to GB/T 10125, evaluate
the appearance grade of the electroplated surface, according to the requirements of GB/T 6461.
6.4.3 Coating adhesion strength test
Conduct a grid-cut test and grade on a relatively flat surface of the shower, in
accordance with the method specified in GB/T 9286.
6.5 Sealing performance test
Connect the sample to the water supply pipeline. The water supply temperature is 70 °C
± 2 °C. Maintain the test dynamic pressure at 0.05 MPa ± 0.02 MPa and 0.50 MPa ±
0.02 MPa for 5 minutes ± 10 seconds, respectively. Check whether there is water
leakage in the shower and its connecting parts.
For showers with two or more water jet modes, this test shall be conducted once in each jet state.
6.6 Mechanical strength test
As shown in Figure 1, install a device that can fix the shower arm (a fixing device that
can achieve the same effect can also be used), meanwhile there are fixing threads that
can match the shower threads.
6.7 Hot and cold fatigue test
6.8 Flow test
6.8.1 Test device
The flow test device shall comply with the requirements in Figure 3.
6.8.2 Test methods
The test water supply temperature T ≤ 30 °C. The test has the following steps.
6.9 Tensile property test
As shown in Figure 4, install and fix the shower inlet with the matching connecting
device thread. Apply an axial tension F1 of 500 N ± 10 N to the shower. Maintain it for
15 s ± 5 s. Check each connection part, shower handle, shower head, etc. for obvious damage.
6.10 Resistance to installation load test
Install the sample to be tested on the fixture. Apply the torque specified in 5.10 to the
thread of the shower or hose, through a standard internal thread testing device that
matches the thread size of the sample. Hold for 60 s ± 5 s. Check whether there are
cracks or damages, damage, visible permanent deformation and functional failure of
the threads. Then conduct the test according to the requirements of 6.5, to check whether
there is leakage in the shower and its connecting parts.
6.11 Temperature drop test
It is carried out, in accordance with Appendix A.
6.12 Rotatory connection test
If there is a rotary connection joint on the shower arm, conduct the test according to the
test device in Figure 5.
6.13 Shower function conversion life test
Install the sample on the pipeline as shown in Figure 3, according to the usage status.
Under the conditions of water temperature T ≤ 30 °C and dynamic pressure of 0.25 MPa
± 0.02 MPa, make the shower switch between various water jet modes and restore,
6.5 and 6.18, before and after the test.
6.14 Anti-siphon test of hand-held shower
As shown in Figure 6, install a 1000 mm ± 20 mm transparent hose on the test
equipment. Connect the other end of the hose to the tail end of the shower. Meanwhile
completely immerse the shower in the water.
6.15 Swing performance test of ball connection
For movable head showers or showers with ball connections, install the sample as
shown in Figure 7 and connect it to the pipeline as shown in Figure 3.The test is carried
out, under the conditions of maximum flow rate, water supply temperature T ≤ 30 °C,
water supply dynamic pressure 0.30 MPa ± 0.02 MPa.
6.19.It shall meet the requirements of 5.19.
6.16 Average jet angle test
It is carried out, in accordance with Appendix B.
6.17 Spray uniformity test
The spray uniformity test is carried out according to the following steps.
6.18 Function switching force test
Connect the sample to the water supply pipeline. Use the thrust meter test function to
switch the force value at the end of the handle, under the conditions of water supply
temperature T ≤ 30 °C and dynamic pressure 0.25 MPa ± 0.02 MPa. This test shall be
performed before and after the life test.
6.19 Ball head swing force test
Connect the sample to the water supply pipeline. Under the conditions of water supply
temperature T ≤ 30 °C and dynamic pressure 0.25 MPa ± 0.02 MPa, use a thrust meter
to test the force required for the rotating nozzle, at the point farthest from the ball head
(edge of the product), as shown in Figure 9.This test shall be performed before and
after the life test.
6.20 Drop test method
Freely drop the handheld shower from a height of 1200 mm ± 20 mm to the tile floor
or cement floor. As shown in Figure 10, drop the shower, with head downward once,
side downward once, water outlet downward once. Parts that are separated or fell off
during the test can be reinstalled and the sample shall maintain normal functions. After
the test, conduct the test according to the requirements of 6.5, to check whether there is
water seepage in the shower and its connecting parts, AND whether the functions can
be used normally.
6.21 Jet force test method
It is carried out, in accordance with Appendix C.
6.22 Burst pressure test method of head shower
Block 80% of the water outlets of the head shower head. Maintain it for 1 minute under
0.25 MPa water pressure, to check whether there is leakage or damage to the product.
7 Inspection rules
7.1 Inspection classification
Product inspection is divided into exit-factory inspection and type inspection.
7.2 Exit-factory inspection
7.2.1 Inspection items
The exit-factory inspection items shall be carried out as specified in Table 3.
7.2.2 Sampling plan and sampling method
7.2.3 Judgement rules
7.3 Type inspection
7.3.1 Inspection items
Type inspection includes other items except 5.16 and 5.17 in the technical requirements
in Chapter 5 of this document.
7.3.2 Inspection conditions
Type inspection shall be carried out, when one of the following conditions exists.
7.3.3 Group-batching rules and sampling plans
8 Marking, packaging, transportation, storage
8.1 Marking
8.1.1 There shall be a permanent mark of the registered trademark on the product.
8.1.2 The single package of the product shall be marked with the manufacturer's name,
product name, product model, registered trademark, this document number, production
date, etc. (unless otherwise specially required by customer).
8.2 Packaging
Each set of products shall be packaged separately. There shall be no destructive
collisions between the various parts of the product.
8.3 Transport
Products shall be protected from rain, moisture, and bumps during transportation. They
shall be handled with care during shipping.
8.4 Storage
The product shall be stored in a well-ventilated, dry room. It shall not be stored together
with acids, alkalis or corrosive items.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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