ISO/FDIS 8233

Thermoplastics valves — Torque — Test method

This document specifies a test method for the determination of the opening, closing and running torque of thermoplastics valves. This test is considered to be performed as part of the initial type testing. This document is applicable to all types of manually operable thermoplastics valves, with or without actuator, intended to be used for the transport of fluids. NOTE 1 Examples of valve types tested with this method are in ISO 4437-4 [1], ISO 16135 [2], ISO 16136 [3], ISO 16138 [4], ISO 16139 [5], ISO 16486-4 [6], ISO 21787 [7], EN 1555-4 [8], EN 12201-4 [9]. It does not specify the relationship between the torque and its possible increase after prolonged use of the valve under a specific working condition or materials wear/chemical aggression. NOTE 2 Concerning the chemical aggression of the materials, a collection of data is reported in ISO/TR 10358 [10]; concerning the endurance test necessary to confirm the ability of hand-operated plastics valves to withstand prolonged use with repeated opening and closing operations , further information is provided in ISO 8659 [11].

Robinets en matériaux thermoplastiques — Couple de manoeuvre — Méthode d'essai

General Information

• Status: Not Published
• ICS: 23.060.01 - Valves in general
• ICS: 83.140.30 - Plastics pipes and fittings for non fluid use
• Technical Committee: ISO/TC 138/SC 7 - Valves and auxiliary equipment of plastics materials
• Drafting Committee: ISO/TC 138/SC 7 - Valves and auxiliary equipment of plastics materials
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 27-Nov-2023
• Completion Date: 27-Nov-2023

Relations

• Revises: ISO 8233:1988 - Thermoplastics valves — Torque — Test method
• Effective Date: 06-Jun-2022

Standards Content (Sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 8233
ISO/TC 138/SC 7
Thermoplastics valves — Torque —
Secretariat: UNI
Test method
Voting begins on:
2023-11-27
Robinets en matériaux thermoplastiques — Couple de manoeuvre —
Méthode d'essai
Voting terminates on:
2024-01-22
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 8233:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 8233:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 8233
ISO/TC 138/SC 7
Thermoplastics valves — Torque —
Secretariat: UNI
Test method
Voting begins on:
Robinets en matériaux thermoplastiques — Couple de manoeuvre —
Méthode d'essai
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
ISO/CEN PARALLEL PROCESSING
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 8233:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 8233:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test specimen . 2
5 Test condition .2
5.1 General . 2
5.2 Conditioning time . 3
5.3 Test pressure . 3
6 Apparatus . 3
7 Procedure for torque test .
...

2023-06-14
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ISO/FDIS 8233:2023(E)
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ISO /TC 138/SC 07 7
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Thermoplastics valves – — Torque –— Test method
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ISO #####-#:####(X)
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ISO/FDIS 8233:2023(E)
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be requested from either ISO at the address below or ISO’s member body in the country of the requester.
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CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
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Phone: + 41 22 749 01 11
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Formatted: Font: 11 pt
Formatted: Font: 11 pt
© ISO 2023 – All rights reserved iii

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ISO/FDIS 8233:2023(E)
Formatted: Space After: 0 pt, Line spacing: single
Formatted: Font: 11 pt, Bold
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test specimen . 2
5 Test condition . 2
5.1 General . 2
5.2 Conditioning time . 3
5.3 Test pressure . 3
6 Apparatus . 3
7 Procedure for torque test . 3
8 Test report . 4
Bibliography .
...