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  • BSI
    BS EN 751-3:2022+A1:2023 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Unsintered PTFE tapes and PTFE strings
    Edition: 2024
    $435.35
    / user per year

Description of BS EN 751-3:2022+A1:2023 2024

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.

Standard NumberBS EN 751-3:2022+A1:2023
TitleSealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Unsintered PTFE tapes and PTFE strings
StatusDefinitive
Publication Date2024-01-19
ReplacesBS EN 751-3:1997
Identical National Standard OfEN 751-3:2022 + A1
AmendsBS EN 751-3:2022
DescriptorsDimensional tolerances, Classification systems, Polytetrafluoroethylene, Tape, Width, Thermal-cycling tests, Gas pipes, Metals, Instructions for use, Hot-water supply systems, Weight tolerances, Vibration testing, Water, Thermal testing, Test equipment, Test specimens, Dimensional measurement, 2nd family gases, Pressure, 3rd family gases, Determination of content, Sealing materials, Environment (working), Screwed fittings, Pipe fittings, Marking, Temperature, Wrapping tests, Pressure testing, Dimensions, Gas-powered devices, Leak tests, Lubricants, Performance testing, 1st family gases, Pipe couplings, Testing conditions
ICS23.040.80 Seals for pipe and hose assemblies, 91.140.60 Water supply systems, 91.140.40 Gas supply systems
CommitteePRI/70
ISBN978 0 539 29954 0
PublisherBSI
Pages26

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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