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GB/T 44579-2024: Water distribution and collection devices of thermoplastics materials
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GB/T 44579-2024: Water distribution and collection devices of thermoplastics materials

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Water distribution and collection devices of thermoplastics materials Thermoplastic manifolds ICS 83.140.30 CCS G33 National Standard of the People's Republic of China Released on 2024-09-29 2025-04-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface ... Ⅲ 1 Scope ... 1 2 Normative references ... 1 3 Terms and Definitions 2 4 Symbols and abbreviations ... 2 4.1 Symbols 2 4.2 Abbreviations ... 2 5 Materials and components ... 3 5.1 Manifold ... 3 5.2 Valves ... 3 5.3 Seals ... 3 6 Design ... 3 7 Requirements ... 4 7.1 Appearance ... 4 7.2 Color ... 4 7.3 Dimensions ... 4 7.4 Hydrostatic strength ... 5 7.5 Physical and mechanical properties of manifolds 6 7.6 Sealing of assemblies 7 7.7 Hydraulic balance performance ... 7 7.8 Transmittance ... 7 7.9 Hygiene requirements 7 7.10 Thermal Cycle Test ... 7 7.11 Pull-off test 8 8 Test methods ... 8 8.1 State Adjustment ... 8 8.2 Appearance and color ... 8 8.3 Dimensions ... 8 8.4 Hydrostatic strength ... 8 8.5 Melt mass flow rate change rate ... 8 8.6 Oxidation Induction Time 8 8.7 Ash content ... 8 8.8 Density ... 8 8.9 Vicat softening temperature 9 8.10 Oven test ... 9 8.11 Drop test 9 8.12 Pigment Dispersion ... 9 8.13 Sealing test 9 8.14 Hydraulic balance performance 9 8.15 Transmittance ... 9 8.16 Hygiene requirements 9 8.17 Thermal Cycle Test 9 8.18 Pull-off test 9 9 Inspection Rules ... 10 9.1 Inspection categories 10 9.2 Batching and Grouping 10 9.3 Factory Inspection 10 9.4 Type inspection 10 9.5 Decision Rules 11 10 Marking, packaging, transportation and storage 11 10.1 Logo 11 10.2 Packaging ... 11 10.3 Transportation 11 10.4 Storage 11 11 Technical Description ... 11 Appendix A (Informative) Technical Description ... 12 References ... 13

Foreword

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 is required. 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 was proposed by China Light Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Plastic Products (SAC/TC 48). This document was drafted by. Shanghai Xinling Valve Co., Ltd., Shanghai Baidie Pipe Technology Co., Ltd., Zhejiang Weixing New Building Materials Co., Ltd. Co., Ltd., Aikang Enterprise Group (Zhejiang) Co., Ltd., Fiso Measurement and Control Technology (Suzhou) Co., Ltd., Tianjin Junxing Pipe Industry Group Group Co., Ltd., Zhejiang Zhongcai Pipeline Technology Co., Ltd., Hangzhou Hefeng Plastic Co., Ltd., and Jiangsu Pinsheng Pipe Industry Co., Ltd. The main drafters of this document are. Zhu Liping, Chai Gang, Jin Tiebiao, Yang Xingyue, Zhang Xian, Wu Xiaofen, Wang Baiti, Zhu Xiaoyong, Yang Yichen, Tang Hui. Thermoplastic manifolds

1 Scope

This document specifies the materials, design, requirements, and test methods of thermoplastic manifolds and manifolds (hereinafter referred to as "manifolds") Methods, inspection rules, marking, packaging, transportation and storage. This document applies to the manufacture and testing of manifolds in building hot and cold water, drinking water, heating/cooling, water treatment and other systems.

2 Normative references

The 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. in this document. GB/T 1033.1 Plastics - Determination of density of non-cellular plastics - Part 1.Immersion method, liquid pycnometer method and titration method GB/T 2828.1 Sampling procedures for inspection by attributes Part 1.Sampling plans for batch inspection based on acceptance quality limit (AQL) GB/T 2918 Standard environment for conditioning and testing of plastic specimens GB/T 3682.1 Plastics - Determination of melt mass flow rate (MFR) and melt volume flow rate (MVR) of thermoplastics Part 1.Standard methods GB/T 6111 Determination of the resistance to internal pressure of thermoplastic piping systems for fluid transportation GB/T 8801 Drop test method for rigid polyvinyl chloride (PVC﹘U) pipe fittings GB/T 8802 Determination of Vicat softening temperature of thermoplastic pipes and fittings GB/T 8803 Injection molding rigid polyvinyl chloride (PVC﹘U), chlorinated polyvinyl chloride (PVC﹘C), acrylonitrile﹘butadiene﹘benzene Ethylene terpolymer (ABS) and acrylonitrile-styrene-acrylate terpolymer (ASA) pipes and fittings - Hot oven test method GB/T 8806 Determination of dimensions of plastic parts for plastic piping systems GB/T 9345.1-2008 Determination of ash content in plastics Part 1.General method GB/T 10002.1-2023 Rigid polyvinyl chloride (PVC﹘U) pipes for water supply GB/T 10002.2 Rigid polyvinyl chloride (PVC﹘U) pipe fittings for water supply GB/T 13663.3 Polyethylene (PE) piping systems for water supply Part 3.Pipe fittings GB/T 15820 Pull-out test for connections between polyethylene pressure pipes and fittings GB/T 17219 Safety evaluation standard for drinking water transmission and distribution equipment and protective materials GB/T 18251 Determination of the dispersion of pigments or carbon black in polyolefin pipes, fittings and compounds GB/T 18742.3 Polypropylene piping systems for hot and cold water Part 3.Fittings GB/T 18993.3 Chlorinated polyvinyl chloride (PVC﹘C) piping systems for hot and cold water Part 3.Pipe fittings GB/T 19278 General terms and definitions for thermoplastic pipes, fittings and valves GB/T 19466.6 Plastics Differential Scanning Calorimetry (DSC) Part 6.Oxidation Induction Time (Isothermal OIT) and Oxidation Determination of induced temperature (dynamic OIT) GB/T 19473.3 Polybutylene (PB) piping systems for hot and cold water Part 3.Pipe fittings GB/T 19993 Thermal cycle test method for thermoplastic piping systems for hot and cold water - pipe and fitting combination systems GB/T 20207.2 Acrylonitrile﹘butadiene﹘styrene (ABS) pressure piping systems Part 2.Fittings GB/T 21300 Determination of opacity of plastic pipes and fittings GB/T 28494 Thermoplastic stop valve ...