DIN Standards Committee Gas Technology
Manual shut off valves for liquefied petroleum gas - Part 1: Definitions, safety requirement, testing, marking
Abstract
This standard applies to manual shut-off valves with operating pressures of 5 bar or 16 bar up to and including DN 25, for liquefied petroleum gas in accordance with DIN 51622 or DIN 51629 — except liquefied petroleum gas in the liquid phase — and an operating temperature range of –20 °C to +60 °C. These shut-off valves are used, for example, in vehicles and boats, as well as in pipeline installations in accordance with the Technical Rules for LPG (TRF). With the initial creation of Annex 1 to DIN 4817-1:2022, the technical requirements are to be clarified and specified. The aim here is to adapt the standard to the practical demands of the application. The following sections are addressed in the new Annex 1: • 4.3.2 Operation of shut-off valve • 4.3.2.1 Requirement Precise specification of the torque and tilting moments. • 4.3.7 Internal tightness • 4.3.7.2 Shut-off valve with handwheel • 4.3.7.2.1 Requirement • 4.3.7.2.2 Test Specification of the maximum torque required to ensure tightness in accordance with 4.3.7.2.1. • 4.3.8 Stress test • 4.3.8.1 Requirement • 4.3.8.2 Test Introduction of the standardised torque value, as specified in 4.3.7.2.2. These additions are necessary to clarify the requirements of the standard and improve the testability of the components. The introduction of Annex 1 creates a clear basis for the testing and marking of manual shut-off valves for liquefied petroleum gas in accordance with DIN 4817-1.
Begin
2025-10-27
Planned document number
DIN 4817-1+A1
Project number
03201124
Responsible national committee
NA 032-03-04 AA - Liquefied petroleum gas
