prBAS EN 751-3+A1:2025
Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes and PTFE strings
General information
Status:Project
Number of pages:20
Adoption method:Proglašavanje
Language:engleski
Edition:3.
Realization date:23.10.2024
Forseen date for next stage code:18.03.2025
Technical committee:BAS/TC 16, Mechanical elements
ICS:
23.040.80, Seals for pipe and hose assemblies
Abstract
This document specifies requirements and test methods for unsintered polytetrafluorethylene (PTFE) tapes and polytetrafluorethylene (PTFE) strings (PTFE tapes or PTFE strings, for short) which are suitable for sealing threaded metallic joints as specified in EN 10226-1:2004.
This document covers two classes of PTFE tapes and PTFE strings suitable for fine (F) and coarse (G) threads.
The PTFE tapes and PTFE strings are used as sealing materials for metallic threaded joints in contact with 1st family gases (town gas), 2nd family gases (natural gas) and 3rd family gases (liquefied petroleum gases (LPG)) up to 500 kPa, up to 700 kPa for hot water of heating systems, and up to 20 kPa in gas appliances and their auxiliary equipment. The maximum working pressure covered in this document is 2000 kPa which is relevant to LPG storage. The temperature range is limited to −20 °C to 125 °C.
Lifecycle
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Original document and degree of correspondence
EN 751-3:2022+A1:2023, identical
Relation to BAS standards
Work material
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