Anti-pollution check valves. DN 6 to DN 250 inclusive Family E, type A, B, C, and D Ingestion-build-105964 ISO 683‑2 is the second

ISO 683‑2 is the second part of a series of documents on heat-treatable steels

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

IEC 60282-1: High-voltage fuses - Part 1: Current-limiting fuses

at the service facility works

1 Number and dimensions of test specimens

Anti-pollution check valves. DN 6 to DN 250 inclusive Family E, type A, B, C, and D Ingestion-build-105964 ISO 683‑2 is the second1 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