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Delivery: <= 9 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 16668-2025: General technical specifications for powder extinguishing system and components Status: Valid GB 16668: Historical versions
Basic dataStandard ID: GB 16668-2025 (GB16668-2025)Description (Translated English): General technical specifications for powder extinguishing system and components Sector / Industry: National Standard Classification of Chinese Standard: C84 Classification of International Standard: 13.220.10 Word Count Estimation: 66,618 Date of Issue: 2025-08-01 Date of Implementation: 2026-08-01 Older Standard (superseded by this standard): GB 16668-2010 Issuing agency(ies): State Administration for Market Regulation, Standardization Administration of China GB 16668-2025: General technical specifications for powder extinguishing system and components---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB16668-2025ICS 13.220.10 CCSC84 National Standard of the People's Republic of China Replaces GB 16668-2010 General technical requirements for dry powder fire extinguishing systems and components Released on August 1, 2025 Implementation on August 1, 2026 State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Categories 2 5 Model compilation 3 6 Requirement 3 6.1 Working environment requirements 3 6.2 System Requirements 4 6.3 Dry powder storage container 5 6.4 Constant pressure action device 6 6.5 Dry powder storage container outlet release device 6 6.6 Gas cylinder group 7 6.7 Container valve 8 6.8 Check valve 9 6.9 Drive Control Device 9 6.10 Collector 10 6.11 Connecting pipe 10 6.12 Safety protection devices 10 6.13 Leak detection device 11 6.14 Low leakage high sealing valve 13 6.15 Selector valve 13 6.16 Signal Feedback Device 14 6.17 Pressure reducing valve 14 6.18 Nozzle 15 6.19 Dry powder hose reel 16 6.20 Dry powder monitor 17 7 Test methods 17 7.1 Test conditions and instruments 17 7.2 Appearance Quality 17 7.3 Strength test 17 7.4 Overpressure test 18 7.5 Sealing test 18 7.6 Constant pressure action device action test 20 7.7 Working reliability test 20 7.8 Vibration test 21 7.9 Safety valve set pressure 21 7.10 Manual operation test 21 7.11 Salt spray corrosion test 21 7.12 Temperature cycle leakage test 21 7.13 Safety relief device operation test 22 7.14 Check valve opening pressure test 22 7.15 Hot air aging test 22 7.16 Voltage Withstand Test 22 7.17 Insulation resistance test 22 7.18 Weighing device alarm function test 22 7.19 High and Low Temperature Test 22 7.20 Basic error test of indication 22 7.21 Pressure indicator alternating load test 23 7.22 Signal feedback device contact resistance test 23 7.23 Weighing device overload test 23 7.24 Signal feedback device action test 23 7.25 Local resistance loss - equivalent length determination method 23 7.26 Heat and pressure resistance test 24 7.27 Impact resistance test 24 7.28 Local application nozzle powder distribution performance test 25 7.29 Anti-splash performance test 25 7.30 Fully flooded nozzle powder distribution performance test 26 7.31 Low temperature resistance test 26 7.32 System appearance inspection 26 7.33 System Structure Check 26 7.34 Total flooding fire extinguishing test 26 7.35 Local application fire extinguishing test 27 7.36 Class D fire extinguishing test 28 7.37 Dry powder residual rate test 29 8 Inspection Rules 29 8.1 Inspection categories, inspection items and test procedures 29 8.2 Sampling Methods 34 8.3 Sample quantity 34 8.4 Determination of test results 34 9 Requirements for writing instruction manuals 34 Appendix A (Normative) System Test Procedure and Sample Quantity 36 A.1 Description of test procedure 36 A.2 Test procedure Figure 36 Appendix B (Normative) Dry Powder Storage Container Test Procedure and Sample Quantity 37 B.1 Description of test procedure 37 B.2 Test procedure Figure 37 Appendix C (Normative) Constant Pressure Action Device Test Procedure and Sample Quantity 38 C.1 Description of test procedure 38 C.2 Test procedure Figure 38 Appendix D (Normative) Release Film Test Procedure and Sample Quantity 39 D.1 Description of test procedure 39 D.2 Test procedure Figure 39 Appendix E (Normative) Release Valve Test Procedure and Sample Quantity 40 E.1 Description of test procedure 40 E.2 Test procedure diagram 40 Appendix F (Normative) Gas Cylinder Group Test Procedure and Sample Quantity 41 F.1 Description of test procedure 41 F.2 Test procedure Figure 41 Appendix G (Normative) Container Valve Test Procedure and Sample Quantity 42 G.1 Description of test procedure 42 G.2 Test procedure Figure 42 Appendix H (Normative) One-way Valve Test Procedure and Sample Quantity 43 H.1 Description of test procedure 43 H.2 Test procedure Figure 43 Appendix I (Normative) Drive Test Procedure and Sample Quantity 44 Appendix J (Normative) Manifold Test Procedure and Sample Quantity 45 J.1 Description of test procedure 45 J.2 Test procedure Figure 45 Appendix K (Normative) Connecting pipe test procedure and sample quantity 46 K.1 Description of test procedure 46 K.2 Test procedure Figure 46 Appendix L (Normative) Safety Valve Test Procedure and Sample Quantity 47 L.1 Description of test procedure 47 L.2 Test procedure Figure 47 Appendix M (Normative) Safety Relief Device Test Procedure and Sample Quantity 48 M.1 Test procedure description 48 M.2 Test Procedure Figure 48 Appendix N (Normative) Pressure Indicator Test Procedure and Sample Quantity 49 N.1 Test procedure description 49 N.2 Test procedure Figure 49 Appendix O (Normative) Weighing Device Test Procedure and Sample Quantity 50 O.1 Description of test procedure 50 O.2 Test procedure diagram 50 Appendix P (Normative) Low Leakage High Seal Valve Test Procedure and Sample Quantity 51 Appendix Q (Normative) Selection Valve Test Procedure and Sample Quantity 52 Q.1 Test procedure description 52 Q.2 Test procedure Figure 52 Appendix R (Normative) Signal Feedback Device Test Procedure and Sample Quantity 53 R.1 Description of test procedure 53 R.2 Test procedure Figure 53 Appendix S (Normative) Pressure Reducing Valve Test Procedure and Sample Quantity 54 S.1 Description of test procedure 54 S.2 Test Procedure Figure 54 Appendix T (Normative) Nozzle Test Procedure and Sample Quantity 55 T.1 Description of test procedure 55 T.2 Test procedure Figure 55 Appendix U (Normative) Dry Powder Hose Reel Test Procedure and Sample Quantity 57 U.1 Test procedure description 57 U.2 Test procedure Figure 57 Appendix V (Normative) Dry Powder Monitor Test Procedure and Sample Quantity 59 Preface This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB 16668-2010 "General Technical Specifications for Dry Powder Fire Extinguishing Systems and Components". In addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Added the terms "Class D dry powder fire extinguishing system" and "constant pressure actuated device" and their definitions (see 3.2 and 3.14); b) The relevant content of classification has been changed (see Chapter 4, Chapter 4 of the.2010 edition); c) The relevant contents of model compilation have been changed (see Chapter 5, Chapter 5 of the.2010 edition); d) The relevant content of structural requirements has been changed (see 6.2.2, 6.2.2 of the.2010 edition); e) The requirements for fire extinguishing agents have been modified (see 6.2.5, 6.2.5 of the.2010 edition); f) Added relevant content on Class D fire extinguishing performance (see 6.2.8.3); g) Deleted the content related to the thermal stability of plastic and rubber parts (see 6.3.7 of the.2010 edition); h) Added relevant content about constant pressure action device (see 6.4); i) The relevant contents of general requirements have been modified (see 6.5.1, 6.4.1 of the.2010 edition); j) Added relevant content on low leakage high sealing valves (see 6.14); k) Deleted the relevant content of gas generators (see 6.14 of the.2010 edition); l) Added content related to work pressure (see 6.16.2); m) Added relevant content on the action test of the constant pressure action device (see 7.6); n) Deleted the relevant content on thermal stability test of plastics and rubber parts (see 7.9 of the.2010 edition). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Fire and Rescue Administration. The previous versions of this document and the documents it replaces are as follows. --- First issued as GB 16668-1996 in.1996 and first revised in.2010; ---This is the second revision. General technical requirements for dry powder fire extinguishing systems and components1 ScopeThis document specifies the classification, model compilation, requirements, inspection rules and instruction manual writing requirements of dry powder fire extinguishing systems and components, and describes The corresponding test methods are described. This document applies to the design, manufacture and maintenance of fixed and semi-fixed dry powder fire extinguishing systems and their components (including cabinet dry powder fire extinguishing devices). test.2 Normative referencesThe contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 150 Pressure Vessels (all parts) GB/T 3181-2008 Paint film color standard GB 4066 Dry powder fire extinguishing agent GB/T 5099.1 Steel seamless gas cylinders Part 1.Steel cylinders with a tensile strength less than 1100 MPa after quenching and tempering GB/T 5100 Steel welded gas cylinders GB/T 9969 General principles for instructions for use of industrial products GB 19156 Fire Monitor GB 19157 General technical requirements for remote-controlled fire monitor systems GB 25200 Dry powder gun GB 25972-2024 Gas fire extinguishing systems and components JB/T 9273 Electric contact pressure gauge XF61 General technical requirements for drive and control devices of fixed fire extinguishing systems XF578 ultrafine dry powder fire extinguishing agent XF979 Class D dry powder fire extinguishing agent3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 A fire extinguishing system consisting of dry powder storage containers, dry powder fire extinguishing agents, drive components, delivery pipelines, spraying components, etc. 3.2 Dry powder fire extinguishing system filled with Class D dry powder fire extinguishing agent. 3.3 A dry powder fire extinguishing system with all system components permanently installed. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 16668-2025_English be delivered?Answer: Upon your order, we will start to translate GB 16668-2025_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB 16668-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 16668-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
