Path: Home > GB/T > Page499 > GB/T 44574-2024

Price & Delivery

US$359.00 · In stock · Download in 9 seconds
GB/T 44574-2024: Plastic check valves for anti-pollution for discharge piping systems inside buildings
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 44574-2024	English	359	Add to Cart	4 days [Need to translate]	Plastic check valves for anti-pollution for discharge piping systems inside buildings

GB/T 44574-2024: Plastic check valves for anti-pollution for discharge piping systems inside buildings

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Plastic check valves for anti-pollution for discharge piping systems inside buildings Plastic check valve for pollution prevention of building drainage pipe system 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, symbols and abbreviations ... 1 3.1 Terms and Definitions 1 3.2 Symbols and abbreviations 2 4 Materials ... 2 5 Design ... 3 6 Requirements ... 3 6.1 Appearance ... 3 6.2 Color ... 3 6.3 Specifications and dimensions ... 3 6.4 Performance Requirements ... 4 6.5 Lead limit ... 5 7 Test methods ... 5 7.1 State Adjustment ... 5 7.2 Appearance and Color ... 5 7.3 Size ... 5 7.4 Density ... 5 7.5 Vicat softening temperature ... 5 7.6 Melt mass flow rate change rate ... 5 7.7 Oxidation Induction Time 6 7.8 Oven test ... 6 7.9 Drop test 6 7.10 Flow capacity ... 6 7.11 Watertightness 6 7.12 Lead Limit 6 8 Inspection Rules ... 7 8.1 Inspection categories 7 8.2 Batching and Grouping 7 8.3 Factory Inspection 7 8.4 Type inspection ... 8 8.5 Decision Rules 8 9 Marking, packaging, transportation, storage ... 8 9.1 Logo ... 8 9.2 Packaging ... 8 9.3 Transportation ... 8 9.4 Storage 8 Appendix A (Informative) Typical Structure of Check Valve ... 9 References ... 10

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. Gongyuan Co., Ltd., Zhejiang Weixing New Building Materials Co., Ltd., Aikang Enterprise Group (Zhejiang) Co., Ltd., Gudi Technology Co., Ltd., Taizhou Huangyan District Metrology and Product Quality Safety Testing Institute, Jiangsu Shuangteng Pipe Industry Co., Ltd. Co., Ltd., Jiangsu Huasu New Building Materials Co., Ltd., and China Wuzhou Engineering Design Group Co., Ltd. The main drafters of this document are. Huang Jian, Shao Huibin, Yang Xingyue, Li Xianmei, Xia Chunyu, Li Guangzhong, Yang Jianguo, Sun Huali, Wang Yaru. Plastic check valve for pollution prevention of building drainage pipe system

1 Scope

This document specifies the materials, design, performance and performance of plastic check valves (hereinafter referred to as "check valves") for anti-pollution use in building drainage pipe systems. It describes the requirements for performance, inspection rules and marking, packaging, transportation, storage, etc., and describes the corresponding test methods. This document applies to the manufacture and inspection of check valves used to prevent pollution in plastic drainage pipe systems in buildings. Note. The purchaser is responsible for selecting this product appropriately based on its specific application requirements and in combination with relevant laws, regulations, standards or specifications.

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 1040.2 Determination of tensile properties of plastics Part 2.Test conditions for molded and extruded plastics GB/T 1633 Determination of Vicat softening temperature (VST) of thermoplastics 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 5761 Suspension method general purpose polyvinyl chloride resin 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 Thermal oven test method for pipe fittings of ethylene terpolymer (ABS) and acrylonitrile-styrene-acrylate terpolymer (ASA) GB/T 8806 Determination of dimensions of plastic parts for plastic piping systems GB/T 10002.1-2023 Rigid polyvinyl chloride (PVC﹘U) pipes for water supply 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 26125-2011 Six restricted substances in electrical and electronic products (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl Determination of ether 3 Terms and definitions, symbols and abbreviations 3.1 Terms and Definitions The terms and definitions defined in GB/T 19278 and the following apply to this document. ...