EN 13906-1 Cylindrical helical springs made from round wire and bar - Calculation and design - Part 1 : Compression springs
EN 549 Rubber materials for seals and diaphragms for gas appliances and gas equipment*, 2023-05-03 Update
EN 751-1 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 1: Anaerobic jointing compounds
EN 751-2 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds
EN 751-3 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*, 2022-06-08 Update
EN 837-1 Pressure gauges - Part 1: Bourdon tube pressure gauges - Dimensions, metrology, requirements and testing
EN ISO 11114-1 Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 1: Metallic materials - Amendment 1 (ISO 11114‑1:2020/DAM 1:2022)
EN ISO 11114-2 Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 2: Non-metallic materials (ISO 11114-2:2021)*, 2021-11-10 Update
NF M88-737:2015 history
2020NF M88-737*NF EN 13953:2020 LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG)
2015NF M88-737:2015 LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG)
2007NF M88-737:2007 LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG).