Anti-pollution check valves. DN 6 to DN 250 inclusive Family E, type A, B, C, and D Ingestion-build-105964 The methods mentioned in BS

The methods mentioned in BS EN 50281-2-1

The design and development process of the high voltage electrical equipment should be able to identify hazards and the risks arising from them

1 Number and dimensions of test specimens

Same life design

Anti-pollution check valves. DN 6 to DN 250 inclusive Family E, type A, B, C, and D Ingestion-build-105964 The methods mentioned in BS1 Scope The purpose of this document is to specify: field of application of anti pollution check valves; backflow prevention properties, dimensional and physio chemical properties, and properties of general hydraulic, mechanical and acoustic design for anti pollution check valves of nominal sizes DN 6 to DN 250 inclusive; family E, type A, controllable anti pollution check valve (with test port); family E, type B, non controllable anti pollution check