SIST EN ISO 17778:2015
(Main)Plastics piping systems - Fittings, valves and ancillaries - Determination of gaseous flow rate/pressure drop relationships (ISO 17778:2015)
Plastics piping systems - Fittings, valves and ancillaries - Determination of gaseous flow rate/pressure drop relationships (ISO 17778:2015)
ISO 17778:2015 specifies a method for determining the flow rate/pressure drop relationship of components for plastics piping systems when tested using air at 25 mbar.
Kunststoff-Rohrleitungssysteme - Formstücke, Armaturen und Zubehörteile - Bestimmung des Zusammenhanges zwischen Gasdurchfluss und Druckabfall (ISO 17778:2015)
Diese Norm legt ein Verfahren für die Bestimmung des Zusammenhanges zwischen Gasdurchflussmenge und Druckabfall der Komponenten für Kunststoffrohrleitungssysteme fest, wenn diese mit Luft bei 25 mbar geprüft werden.
ANMERKUNG 1 bar = 105 N/m².
Systèmes de canalisations en plastiques - Raccords, robinets et équipements auxiliaires - Détermination du rapport débit gazeux/perte de charge (ISO 17778:2015)
L'ISO 17778:2015 spécifie une méthode pour la détermination du rapport débit gazeux/perte de charge des composants de systèmes de canalisations en plastiques, les essais ayant lieu avec de l'air à 25 mbar.
Cevni sistemi iz polimernih materialov - Fitingi, ventili in pribor - Določanje razmerja plinskega pretoka/padca tlaka (ISO 17778:2015)
General Information
- Status
- Published
- Public Enquiry End Date
- 09-Mar-2014
- Publication Date
- 17-May-2015
- Technical Committee
- PCV - Plastic pipes, fittings and valves
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 15-Apr-2015
- Due Date
- 20-Jun-2015
- Completion Date
- 18-May-2015
Relations
- Effective Date
- 01-Jun-2015
Overview
EN ISO 17778:2015 specifies a laboratory method to determine the gaseous flow rate / pressure drop relationship of components used in plastics piping systems (fittings, valves and ancillaries). Tests are carried out using air at 25 mbar and produce a characteristic factor that relates pressure loss to flow rate. The standard is intended for manufacturers, test laboratories and specifiers who need repeatable, comparable gas-flow performance data for plastic piping components.
Key Topics
- Scope and principle
- Method for measuring pressure drop (Δp) versus volumetric flow (Q) under a constant main pressure of (25 ± 0.5) mbar.
- Outputs include velocity (V), a flow/pressure factor (F) and equivalent flow rates for other gases.
- Apparatus and accuracy
- Pressure controller to hold main line pressure at 25 mbar.
- Flow meter (positive displacement or turbine) with accuracy ±2%.
- Pressure manometers: main-line manometer (class 0.6) and differential manometer (class 0.25) per EN 837‑1.
- Typical test rig schematic (pressure controller, flow meter, test component, outlet valve).
- Test pieces & preparation
- Component fused/connected between two plastic pipe lengths; pressure tapping points flush with bore.
- For tapping tees, pressure drop measured through the outlet branch.
- Procedure & acceptance criteria
- Perform tests at (23 ± 2) °C, vary outlet valve to obtain multiple Q/Δp pairs.
- Minimum five data sets required; velocity V must include at least one ≤ 2.5 m/s and one ≥ 7.5 m/s (if unattainable at 25 mbar, report observation).
- Calculations
- Velocity V = Q / A (Q in m³/h, A bore area in m²).
- Factor F = Δp / Q² (average F expresses the pressure-drop/flow relationship).
- Convert air flow to other gases using the density ratio provided by the standard (Q_gas = (ρ_air / ρ_gas) × Q_air).
- Test report content
- Reference to ISO 17778, component ID, materials, measured Q/Δp/V, average F, calculated flows for air and other gases, deviations and test date.
Applications
- Establishing performance data for plastic fittings, valves and ancillaries used in low‑pressure gas distribution and industrial systems.
- Supporting product datasheets, type testing, conformity assessment and sizing/selection in gas distribution networks.
- Useful to manufacturers, independent test laboratories, utilities, system designers and regulatory bodies specifying flow/pressure-loss limits.
Related Standards
- Supersedes EN 12117:1997.
- References EN 837‑1 (pressure gauge classes) and other normative documents cited in the standard.
Keywords: ISO 17778:2015, plastics piping systems, fittings valves ancillaries, flow rate pressure drop, gaseous flow testing, 25 mbar, differential pressure, test method.
Frequently Asked Questions
SIST EN ISO 17778:2015 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Plastics piping systems - Fittings, valves and ancillaries - Determination of gaseous flow rate/pressure drop relationships (ISO 17778:2015)". This standard covers: ISO 17778:2015 specifies a method for determining the flow rate/pressure drop relationship of components for plastics piping systems when tested using air at 25 mbar.
ISO 17778:2015 specifies a method for determining the flow rate/pressure drop relationship of components for plastics piping systems when tested using air at 25 mbar.
SIST EN ISO 17778:2015 is classified under the following ICS (International Classification for Standards) categories: 83.140.30 - Plastics pipes and fittings for non fluid use. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 17778:2015 has the following relationships with other standards: It is inter standard links to SIST EN 12117:1999. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN ISO 17778:2015 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
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Plastics piping systems - Fittings, valves and ancillaries - Determination of gaseous flow
rate/pressure drop relationships (ISO 17778:2015)
Kunststoff-Rohrleitungssysteme - Formstücke, Armaturen und Zubehörteile -
Bestimmung des Zusammenhanges zwischen Gasdurchfluss und Druckabfall (ISO
17778:2015)
Systèmes de canalisations en plastiques - Raccords, robinets et équipements auxiliaires
- Détermination du rapport débit gazeux/perte de charge (ISO 17778:2015)
Ta slovenski standard je istoveten z: EN ISO 17778:2015
ICS:
83.140.30 Cevi, fitingi in ventili iz Plastics pipes, fittings and
polimernih materialov valves
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 17778
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2015
ICS 23.040.20; 23.040.45; 23.060.01 Supersedes EN 12117:1997
English Version
Plastics piping systems - Fittings, valves and ancillaries -
Determination of gaseous flow rate/pressure drop relationships
(ISO 17778:2015)
Systèmes de canalisations en plastiques - Raccords, Kunststoff-Rohrleitungssysteme - Formstücke, Armaturen
robinets et équipements auxiliaires - Détermination du und Zubehörteile - Bestimmung des Zusammenhanges
rapport débit gazeux/perte de charge (ISO 17778:2015) zwischen Gasdurchfluss und Druckabfall (ISO 17778:2015)
This European Standard was approved by CEN on 14 November 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17778:2015 E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 17778:2015) has been prepared by Technical Committee ISO/TC 138 "Plastics pipes,
fittings and valves for the transport of fluids" in collaboration with Technical Committee CEN/TC 155 “Plastics
piping systems and ducting systems” the secretariat of which is held by NEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by September 2015, and conflicting national standards shall be
withdrawn at the latest by September 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12117:1997.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 17778:2015 has been approved by CEN as EN ISO 17778:2015 without any modification.
INTERNATIONAL ISO
STANDARD 17778
First edition
2015-03-15
Plastics piping systems —
Fittings, valves and ancillaries —
Determination of gaseous flow rate/
pressure drop relationships
Systèmes de canalisations en plastiques — Raccords, robinets et
équipements auxiliaires — Détermination du rapport débit gazeux/
perte de charge
Reference number
ISO 17778:2015(E)
©
ISO 2015
ISO 17778:2015(E)
© ISO 2015
All rights reserved. Unless otherwise specified, 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
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ii © ISO 2015 – All rights reserved
ISO 17778:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Apparatus . 1
5 Test pieces preparation . 3
6 Procedure. 3
7 Calculation of results . 4
8 Test report . 4
ISO 17778:2015(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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through ISO technical committees. Each member body interested in a subject for which a technical
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electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was dra
...
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