This standard specifies the terms and definitions, classification, codes and model markings, materials and structures, requirements, test methods, inspection rules, markings, packaging, storage and transportation, Instructions for use and storage, etc. This standard applies to check valves installed on centralized kitchen exhaust fume ducts and public bathroom exhaust ducts in buildings.
GA/T 798-2008 Referenced Document
GB 15930-2007 Fire dampers for building venting and smoke-venting system
GB 9969.1 General principles for preparation of instructions for use of industrial products