NS EN 730 : 1ED 1995

Foreword
1 Scope
2 Normative references
3 Definitions and functions
3.1 Safety devices
3.2 Non return valve
3.3 Flame arrestor
3.4 Pressure relief valve
3.5 Cut off valves
3.6 Multifunctional device
4 Design and materials
4.1 Design
4.2 Materials
5 Requirements
5.1 Requirements common to all devices
5.2 Requirements applicable to each type of device
6 Tests
6.1 General
6.2 Reference values and accuracy of instruments
6.3 Conformity testing
6.4 Test gases
6.5 Test methods common to all devices
6.6 Tests applicable to each specific type of device
7 Manufacturers instructions
8 Marking

Lays down the general specifications, requirements and tests of safety devices for fuel gases and oxygen or compressed air used downstream of cylinder or pipeline outlet regulators and of pipeline outlet valves, and up-stream of blowpipes for cutting, welding and allied processes.