G/TBT/N/BWA/73  
 
12 October 2017  
(17-5497) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member: BOTSWANA   
If applicable, name of local government involved (Article 3.2  and 7.2):   
2. Agency responsible:  
Ministry of Investment Trade and Industry  
Private Bag 004  
Gaborone  
Tel: (+267) 3601200  
Name and address (including telephone and fax numbers, email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
Botswana Bureau of Standards  
Private Bag BO 48  
Gaborone  
Botswana  
Tel: (+267) 3903200  
Fax: (+267) 3903120  
Toll Free Number: (0800 600 900)  
Email: infoc@hq.bobstandards.bw  
3. Notified under  Article 2.9.2 [ X], 2.10.1 [   ], 5.6.2 [   ], 5.7.1 [   ], other:  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable): Water 
meters. Water supply systems (ICS 91.140.60).  
5. Title, number of pages and language(s) of the notified doc ument: Water meters for 
cold potable water and hot water – Part 4: Non -metrological requirements not covered in 
ISO 4064 - (33 page(s), in English)    
6. Description of content: This part of ISO 4064 applies to water meters used to meter the 
volume of cold potable water and hot water flowing through a fully charged, closed 
conduit. These water meters incorporate devices which indicate the integrated volume.  
This part of ISO 4064 specifies technical characteristics and pressure loss requirements for 
meters for cold potable water and hot water. It applies to water meters which can 
withstand:  
a) a maximum admissible pressure (MAP) equal to at least 1 MPa   [0,6 MPa for meters 
for use  with pipe nominal diameters (DNs) ≥500 mm];  
b) a maximum admissible temperature (MAT) for cold potable water meters of 30 °C;  
c) a MAT for hot water meters of up to 180 °C, depending on class [0,6 MPa for meters 
for use with pipe nominal diameters (DNs) ≥5 00 mm];  G/TBT/N/BWA/73  
 
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  In addition to meters based on mechanical principles, this part of ISO 4064 also applies to 
water meters based on electrical or electronic principles, and to water meters based on 
mechanical principles incorporating electronic devices, used to mete r the volume flow of 
hot water and cold potable water. It also applies to electronic ancillary devices. As a rule 
ancillary devices are optional. However, national or international regulations may make 
some ancillary devices mandatory in relation to the ut ilization of the water meter.  
7. Objective and rationale, including the nature of urgent problems where 
applicable: Prevention of deceptive practices and consumer protection; Quality 
requirements  
8. Relevant documents:   
The following documents, in whole or in part, are normatively referenced in this document 
and are indispensable for its application. For dated references, only the edition cited 
applies. For undated references, the latest edition of the referenced document (including 
any amendments) applie s. 
ISO 228−1, Pipe threads where pressure -tight joints are not made on the threads  – Part 
1: Dimensions, tolerances and designation  
ISO 4064 1|OIML  R 49-1, Water meters for cold potable water and hot water  – Part 1: 
Metrological and technical requirements  
ISO 7005 2, Metallic  flanges  – Part 2: Cast iron flanges  
ISO 7005 3, Metallic  flanges  – Part 3: Copper  alloy and composite  flanges   
9. Proposed date of adoption: 20 November 2017  
Proposed date of entry into force: 20 November 2017  
10. Final date for comments: 20 November 2017  
11. Texts available from: National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available, of other body:   
Botswana Bureau of Standards  
Information Centre  
Private Bag  BO 48  
Gaborone  
Botswana  
Tel: (+267) 3903200  
Fax: (+267) 3903120  
Toll Free Number: (0800 600 900)  
Email: infoc@hq.bobstandards.bw