SPAN TECHNICAL SPECIFIATION - SIRIM STS...BS EN 248, Sanitary tapware - General specification for...

SPAN – TECHNICAL SPECIFIATION

SPAN-TS XX:2020

ICS: <=XX.XXX=>

Showerhead - Specification

© Copyright 2020 Suruhanjaya Perkhidmatan Air Negara (SPAN)

A document developed by SIRIM for SPAN

SURUHANJAYA PERKHIDMATAN AIR NEGARA (SPAN) Suruhanjaya Perkhidmatan Air Negara (SPAN) is a technical and economic regulatory body for the water supply and sewerage services in Peninsular Malaysia and Federal Territories of Putrajaya and Labuan. The Commission regulates all entities in the water supply and sewerage services industry including public and private water supply and sewerage services operators, water supply and sewerage contractors, permit holders and suppliers of water and sewerage products. SPAN vision is towards a sustainable, reliable and affordable water service for all and with the mission to regulate the water services industry through fair, effective and transparent implementation of Water Services Industry Act 2006 (Act 655).

SPAN TECHNICAL SPECIFICATION

SPAN Technical Specification (SPAN-TS) is developed according to SIRIM standardisation procedures, which are in line with international practices that ensure appropriate notification of work programmes and participation of interested parties. As a standards development organisation, SIRIM Berhad has extensive expertise in standards research and consultancy which helps industries and businesses meet local and international requirements and practices. SPAN-TS is developed from SPAN initiatives as a regulatory body for the water supply and sewerage services through collaboration with SIRIM which provides requirements, specifications, guidelines or characteristics that can be used to ensure that materials, products, processes and services are fit for their purpose. SPAN-TS is developed through consensus by established committee, which consists of experts in the subject matter. The use of this standard is mandatory, and it is open for adoption by regulators, government agencies, associations, industries, professional bodies, etc.

© Copyright 2020

For further info or enquiries on SPAN-TS, please contact: Bahagian Pembangunan Industri Suruhanjaya Perkhidmatan Air Negara (SPAN) Ground Floor and First Floor, Prima Avenue 7, Block 3510, Jalan Teknokrat 6, 63000 Cyberjaya, Selangor Darul Ehsan Tel: 60 3 8317 9333/334/335 Fax: 60 3 8317 9336 E-mail:

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© SPAN 2020 - All rights reserved i

Contents

Page Foreword ............................................................................................................................... ii 0 Introduction ............................................................................................................... 1 1 Scope ........................................................................................................................ 1 2 Normative references ................................................................................................ 1 3 Terms and definitions ................................................................................................ 1 4 Material ..................................................................................................................... 2 5 Design and dimension ............................................................................................... 3 6 Performance requirements ........................................................................................ 6 7 Marking and labelling ................................................................................................. 7 Annex A Test method for water efficiency and flow rate ...................................................... 8 Annex B Test method for leak-tightness characteristic ...................................................... 11 Annex C Test method for mechanical strength .................................................................. 13 Annex D Thermal shock test ............................................................................................. 15 Annex E Test for effectiveness of rotary connection .......................................................... 17 Bibliography ........................................................................................................................ 18

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Foreword This SPAN-TS was developed by the Working Group on Showerhead for Water Efficient Product Labelling Scheme (WEPLS). This standard was developed with the following objectives: a) to provide a comprehensive standard that prescribes requirements for single and

combination taps; b) to assist the industries to certify their products against a given standard; and c) to provide the regulatory bodies a standard for monitoring of the products. In the preparation of this technical specification, reference was made to BS EN 1112, Sanitary tapware – Shower outlets for sanitary tapware for water supply system of type 1 and type 2 – General technical specification This standard will be subjected to review to reflect current needs and conditions. Users and other interested parties may submit comments on the contents of this standard for consideration into future versions. Compliance with this standard does not by itself grant immunity from legal obligations.

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© SPAN 2020 - All rights reserved 1

Showerhead - Specification

1. Scope

This standard specifies requirements for the materials, design, performance requirement, test methods, marking and labelling for showerhead. This standard is applicable to showerhead fixture fittings, inclusive of showerheads, rain showers, and hand-held showers which may include fixed or pivot arm, flexible hose (with or without flow controller), tap top assemblies or other components. The product complying to this standard is intended to be used for Water Efficient Product Labelling Scheme (WEPLS).

2. Normative references

The following normative references are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the normative reference (including any amendments) applies. MS 1583-1, Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water - Part 1: Specification MS ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation BS EN 248, Sanitary tapware - General specification for electrodeposited coatings of Ni-Cr AS/NZS 3662, Performance of showers for bathing AS/NS 4020, Testing of products for use in contact with drinking water Guidelines for Voluntary Water Efficient Products Labelling Scheme

3. Terms and definitions For the purposes of this standard, the terms and definitions given in xxx and the following apply. 3.1 showerhead Device through which water is passed to form spray for bathing purposes. 3.2 fixed shower head Fixed height outlet fitting through which water passes and is emitted as either a number of separate, jets or as water droplets.

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3.3 swivel shower head Fixed height outlet fitting through which water is emitted as either a number of separate jets or water droplets. This shower head incorporates a universal joint enabling it to be swivelled through a limited angular arc, thereby permitting the water spray trajectory to be adjusted. 3.4 shower handset Mobile shower head with an integral handle which, when used in conjunction with a flexible hose, permits the user to direct the water trajectory as required. 3.5 spray plate Device which orifices through which water passes and forms a spray of water with separate, definable jets or water droplets. 3.6 flexible hose Flexible tube, which connects the outlet of the mixing valve to the shower handset.

4. Material 4.1 Chemical and hygiene requirements All materials coming into contact with water intended for human consumption shall present no risk to health at temperature up to the maximum working temperature. They shall not cause any changes to drinking water in terms of quality, appearance, smell or taste. When used under conditions for which they are designed, the products which is in permanent or temporary contact with water intended for the conveyance of water for human consumption shall comply with MS 1583 Part 1 and AS/NZS 4020. 4.2 Exposed surface conditions and quality of coating

Visible chromium plated surfaces and Ni-Cr coatings shall comply with the requirements of EN 248. 4.3 Body material Body materials used shall be declared by manufacturer and verified that they are suitable for application.

5. Design and dimension

5.1 General The design and construction of components without defined dimensions permits various design solutions to be adopted by the manufacturer.

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Permitted deviations from defined dimensions are specified in 5.6. If applicable, the spray plate, where fitted, shall be removable in accordance with the manufacturer’s instructions by the use of simple tools (e.g. screwdriver) for cleaning purposes at least 50 times and still be replaceable without renewal of parts. 5.2 Showerhead types The showerhead shall be one of the following types:

a) fixed shower head;

b) swivel shower head;

c) shower handset fed via a flexible hose and of one of the following variations:

‒ fixed height handset for use with a wall handset holder;

‒ variable height handset for use with a slide bar; and

‒ hand-held handset for use with a simple holder attached to a bath/shower mixer.

5.3 Connecting dimensions The connecting dimensions of shower outlets are specified in Table 1 and Figures 1 to 5.

Figure 1a. Showerhead Figure 1b. Showerhead (detail)

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Figure 2. Shower arm or shower head Figure 3. Shower head and body shower

Figure 4a. Shower arm Figure 4b. Shower arm (detail)

Figure 5a. Shower handset

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Figure 5b. Shower handset - 1st type Figure 5c. Shower handset - 2nd type of thread of thread

Table 1. Connecting dimension

Dimension Values Recommendation for installation/remarks

A G ½ B MS ISO 228-1

B 7.5 mm

B’ 9.5 mm

C 5 mm Recommended for wall installation.

Adjustability of the escutcheon

D 50 mm Recommended for wall installation

E 15 mm

Recommended for wall installation. Distance between end of thread and face of escutcheon. It is not the length of the thread.

F G ½ or G ¾ MS ISO 228-1

G 8.5 + 0/-1 mm Functional dimension on seal depth

H G ½ or G ¾ MS ISO 228-1

A ≤ 3.6 mm

5.6 Shower outlets intended for special applications e.g., when dimensional interchange ability is not a requirement, can incorporate dimensional deviations provided:

a) connection to the installation is guaranteed;

b) threaded connections are in compliance with ISO standards;

c) all other requirements of this standard are satisfied; AND

d) the manufacturer’s literature, including the installation instructions supplied with the

shower outlet indicates clearly that the shower outlet is a special case.

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6. Performance requirement 6.1 Water efficiency

Water efficiency for showerhead is taken to be the nominal flow rate of showerhead compute at the mean of the average flow rates obtain at the following dynamic flow pressures of 100kPa, 150 kPa, 250 kPa, 350 kPa and 500 kPa when tested in accordance to Annex A. 6.2 Flow rate The following test requirements shall be followed in accordance with Annex A in measuring and computing flow rates and nominal flow rates: 6.2.1 The flow rates shall be measured at each of the dynamic flow pressures of 50 kPa, 100 kPa, 150 kPa, 200 kPa, 250 kPa, 300kPa, 350 kPa, 400 kPa, 450 kPa, 500kPa and 550 kPa. 6.2.2 The nominal flow rate shall be the mean of the average flow rates obtained at the following dynamic flow pressures of 100 kPa,150 kPa, 250 kPa, 350 kPa and 500 kPa. 6.2.3 The highest average flow rate determined at each of the dynamic flow pressures of 100 kPa, 150 kPa, 250 kPa, 350 kPa and 500 kPa shall not exceed the upper limit of the flow range for the applicable rating (Table 2) for the determined nominal flow rate. 6.2.4 The lowest average flow rate determined at each of the dynamic flow pressures of 100 kPa, 150 kPa, 250 kPa, 350 kPa and 500 kPa shall not exceed the lower limit of the flow range for the applicable rating (Table 2) for the determined nominal flow rate. 6.2.5 The differences between the highest and lowest average flow rate determined in accordance with the standards stipulated above at each dynamic flow pressures of 100 kPa, 150 kPa, 250 kPa, 350 kPa and 500 kPa shall not exceed 2.0 litres/min. 6.2.6 The recording of the average flow rates at 50 kPa, 200 kPa, 300 kPa, 400 kPa, 450 kPa and 550 kPa are for data collection purposes only.

Table 2. Conversion of water consumption to water efficiency rating for showerhead

Water consumption Nominal flow rates (f)

(l/min)

Water efficiency grade

Rating Symbol on label

8.0 < f ≤ 10.0 Efficient 1 ★ ★

6.0 < f ≤ 8.0 Highly efficient 2 ★ ★ ★

4.5 < f ≤ 6.0 Most efficient 3 ★ ★ ★ ★

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6.3 Leak-tightness characteristic When tested in accordance with Annex B, for the duration of the test there shall be no leakage between the connecting point and body, or at the connection between the spray plate and body. 6.4 Mechanical strength When tested in accordance with Annex C, there shall be no cracking or permanent visible deformation. 6.5 Thermal shock resistance When tested in accordance with Annex D, there shall be no visible leakage, cracking, permanent deformation or deterioration in function. The shower outlet shall satisfy the requirements for leak-tightness. 6.6 Effectiveness of rotary connection. If a shower handset has a rotary connection permitting the handle to turn freely relative to the shower hose, this connection shall be capable of functioning correctly and shall prevent twisting of the shower hose. When tested in accordance with Annex E the initial torque shall not exceed 1.0 Nm.

7 Marking and labelling 7.1 General Showerheads complying to this standard shall be marked permanently and legibly with the manufacturer’s mark or supplier mark. The maximum flow rate shall be specified by the manufacturer, verified through testing and in compliance with clause 6 of this specification. 7.2 Water efficiency label An approved Water Efficient Product (WEP) shall be labelled with the approved water efficiency label. Labelling and the use of WEPLS label on showerhead product shall be in accordance with WEPLS Guideline.

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Annex A (normative)

Test method for water efficiency and flow rate

A.1 Principle The principle consists of a method for measuring the flow rate through the shower outlet using cold water (T ≤30 °C) in order to determine the flow rate class (see Table 2). A.2 Apparatus A.2.1 The test apparatus is detailed in Figure A.1 below.

Key A is the supply circuit comprising: 1 - device for measuring the flow rate with an accuracy of ± 2 %; and 2 - means for measuring and maintaining the required pressure with an accuracy of ± 1 %. B is the test circuit comprising: 3 - DN15 regulating valve; 4 - straight DN15 pipe; 5 - pressure take off tee (Figure A.3); 6 - pressure measuring device to measure the appropriate pressure specified in Table 5 with an accuracy of ± 1 %; 7 - adapter to connect the inlets of the various shower outlets shown in Figures 3 to 7 (see Figure A.2) enabling orientation of the spray to be in a downwards direction; 8 - datum; and 9 - test pressure.

Figure A.1. Apparatus for hydraulic characteristics

A B

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Figure A.2. Detail for key 7 (as shown in Figure A.1)

A.2.2 The supply and test circuits shall be capable of delivering the appropriate pressure specified in Table 2, when the shower outlet under test is installed.

Figure A.3. Pressure take-off tee (unspecified tolerances ± 0.5)

A.3 Procedure A.3.1 Connect the shower outlet to the supply and test circuits using adapter (Figure 11, Key 7). A.3.2 Rotate the adapter around its horizontal axis until the spray plate or spray forming mechanism is in a horizontal position with a vertically downwards discharge.

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A.3.3 Apply the appropriate pressure specified in Table A.1 using the centre of the spray plate or spray forming mechanism as a datum. A.3.4 Record the flow rate, f, after stabilisation. A.3.5 Observe the spray formation.

Table A.1 Pressure

Pressure

50 kPa 100 kPa 150 kPa 250 kPa 300 kPa 350 kPa 400 kPa 450 kPa 500 kPa 550 kPa

A.3.6 Shower outlets shall be classified according to the flow rate, f, value specified in Table 2 with water supplied at the appropriate pressure specified in Table A.1 provided the spray formation under these conditions is observed to be fully formed.

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Annex B (normative)

Test method for leak-tightness characteristic

B.1 General The test described is a type test (laboratory test) and not a quality control test carried out during manufacture. B.2 Principle The test is based on the principle of checking the leak-tightness of the shower outlet with positive internal water pressure. B.3 Apparatus A suitable test circuit (see Figure B1) capable of providing and maintaining the required pressure and flow rate for the duration of the test. B.4 Procedure Connect the shower outlet as supplied to the test circuit. With water flowing at a temperature ≤ 30 °C, apply the appropriate test pressure is (200 ± 10) kPa and maintain for (300 ± 10) s.

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Key A is the supply circuit comprising: 1 - means for supplying and maintaining hot water temperature and pressure for the duration of the test; 2 - means for supplying and maintaining cold water temperature and pressure for the duration of the test; 3 - means for alternating from hot to cold water and vice versa within 2 s; 4 - means for measuring pressure with an accuracy of ± 1 %; and 5 - means for measuring temperature with an accuracy of ± 1 °K. B is the test circuit comprising: 6 – connector; and 7 - Test sample

Figure B.1. Apparatus for leak-tightness test

A B

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Annex C (normative)

Test method for mechanical strength

C.1 General

The tests described are type tests (laboratory tests) and not quality control tests carried out during manufacture. C.2 Principle A force F is applied to the shower handset as shown in Figures C.1 or C.2. C.3 Apparatus A device into which the shower handset connecting thread can be screwed and a means for applying a force to the shower handset. C.4 Procedure C.4.1 Attach the shower handset to the fixing device by its connecting thread so that there is no play. C.4.2 Apply a force F as shown in Figures C.1 or C.2 for a duration of (300 ± 10) s. C.4.3 Hinged joints with a stop are to be tested as shown in Figure C.2, positioned at the stop.

Figure C.1. Handset with rigid connection

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Figure C.2. Handset with hinged joint

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Annex D (normative)

Thermal shock test

D.1 General This test simulates use under conditions of extreme temperatures and establishes the integrity of the complete product. D.2 Principle The principle consists of subjecting the shower outlet to cycles of hot and cold water at a temperature equal to the limits of use. D.3 Apparatus The test apparatus is detailed in Figure D.1.

Key A is the supply circuit comprising: 1 - means for supplying and maintaining hot water temperature and pressure for the duration of the test; 2 - means for supplying and maintaining cold water temperature and pressure for the duration of the test; 3 - means for alternating from hot to cold water and vice versa within 2 s; 4 - means for measuring pressure with an accuracy of ± 1 %; and 5 - means for measuring temperature with an accuracy of ± 1 °K. B is the test circuit comprising: 6 – connector; and 7 - test sample

Figure D.1. Apparatus for thermal shock test D

A B

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The supply circuit shall be capable of providing the maximum recommended dynamic pressure, 50k kPa to 550kPa, with hot water at (70 ± 2) °C and cold water at (20 ± 2) °C.

D.4 Procedure D.4.1 Connect the shower outlet to the test circuit and subject it to cycles of (120 ± 10) s of cold water and then (120± 10) s of hot water with flow rates between 0.08 l/s and 0.12 l/s, but not exceeding the pressure of (100±10) kPa. D.4.2 Repeat this cycle continuously for 300 times.

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Annex E

(normative)

Test for effectiveness of rotary connection

E.1 General The test described is a type test (laboratory test) and not a quality control test carried out during manufacture. If a shower handset has a rotary connection permitting the handle to turn freely relative to the shower hose, this connection shall be capable of functioning correctly and shall prevent twisting of the shower hose. E.2 Principle The test is intended to check the function of any rotary connection. E.3 Apparatus

Key 1 - water supply capable of supplying and maintaining the appropriate test pressure (100± 10) kPa. 2 - rigid supply pipe for holding the shower handset at the connection thread so that the shower hangs down vertically; and 3 - device which engages with the shower handset in order to enable measurement of the initial torque necessary to rotate the shower handset relative to the rotary connection.

Figure E.1. Rotary connection test apparatus

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E.4 Procedure

E.4.1 Seal the spray forming device so that it is watertight. E.4.2 Connect the rotary connection of the shower handset to the supply pipe. E.4.3 Apply cold water ≤ 30 °C at the appropriate pressure of (100± 10) kPa. E.4.4 Measure the torque necessary to initiate rotation of the shower handset relative to the rotary connection.

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Bibliography [1] BS EN 1112, Sanitary tapware – Shower outlets for sanitary tapware for water supply system of type 1 and type 2 – General technical specification [2] BS 6340-4, Shower units -Part 4: Specification for shower heads and related equipment [3] AS/NZS 6400, Water efficient products - Rating and labelling [4] EPA WaterSense Specification for Showerheads

© SPAN 2020 - All rights reserved

Acknowledgements SPAN and SIRIM STS would like to thank the organisations who have contributed their ideas, time and expertise in the development of this SPAN TS. Mr Azamy Abdul Aziz (Chairman)

Suruhanjaya Perkhidmatan Air Negara (SPAN)

Ms Siti Hadijah Hassan (Technical Secretary) SIRIM STS Ms Sharifah Iffahanim Saiyed Ismail ANQAS Certification Mr Enrico Candido Martin DOE Industries Sdn Bhd Mr Mohd Akhir Abdullah/ Mr Muhammad Farhan

IKRAM QA Services Sdn Bhd

Mr Eezani Iswan Ismail Malaysia Green Technology and Climate

Change Center (MGTC) Ms. Nanthienie Thangaperumal/ Mr. Muhammad Nabil

ROCA Malaysia

Mr Mohd Rashidi Batcha/ Mr Mohd Faizar Mustafa

SIRIM QAS (Testing Services Department)

Ms. Wan Norisah/ Mr Roslan Azizan

SIRIM QAS (Product Certification and Inspection Department)

Ms Adeela Ruslan Suruhanjaya Perkhidmatan Air Negara

(SPAN)

© Copyright 2020

All rights reserved. Unless otherwise specified, no part of this module may be reproduced or utilised in any form or by any means, electronic or mechanical, including photocopying, recording or otherwise, without prior written permission from SPAN.

SPAN TECHNICAL SPECIFIATION - SIRIM STS...BS EN 248, Sanitary tapware - General specification for...

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