GB/T 44574-2024建筑排水管道系統(tǒng)防污染用塑料止回閥

ICS

83.140.30

CCS

G33

中華人民共和國國家標準

GB/T44574—2024

建筑排水管道系統(tǒng)防污染用塑料止回閥

Plasticcheckvalvesforanti-pollutionfordischargepipingsystemsinsidebuildings

2024-09-29發(fā)布2025-04-01實施

國家市場監(jiān)督管理總局發(fā)布

國家標準化管理委員會

GB/T44574—2024

目次

前言

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1

范圍

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2

規(guī)范性引用文件

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3

術(shù)語和定義、符號和縮略語

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3.1

術(shù)語和定義

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3.2

符號和縮略語

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4

材料

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5

設(shè)計

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6

要求

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6.1

外觀

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6.2

顏色

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6.3

規(guī)格尺寸

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6.4

性能要求

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6.5

鉛限量

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7

試驗方法

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7.1

狀態(tài)調(diào)節(jié)

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7.2

外觀和顏色

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7.3

尺寸

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7.4

密度

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7.5

維卡軟化溫度

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7.6

熔體質(zhì)量流動速率變化率

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7.7

氧化誘導時間

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7.8

烘箱試驗

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7.9

墜落試驗

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7.10

流通能力

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7.11

水密性

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7.12

鉛限量

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8

檢驗規(guī)則

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8.1

檢驗分類

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8.2

組批和分組

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8.3

出廠檢驗

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8.4

型式檢驗

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8.5

判定規(guī)則

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9

標志、包裝、運輸、貯存

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Ⅰ

GB/T44574—2024

9.1

標志

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9.2

包裝

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9.3

運輸

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9.4

貯存

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附錄A（資料性）

止回閥的典型結(jié)構(gòu)

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參考文獻

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Ⅱ

GB/T44574—2024

前言

本文件按照GB/T1.1—2020《標準化工作導則第1部分：標準化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)

定起草。

請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機構(gòu)不承擔識別專利的責任。

本文件由中國輕工業(yè)聯(lián)合會提出。

本文件由全國塑料制品標準化技術(shù)委員會（SAC/TC48）歸口。

本文件起草單位：公元股份有限公司、浙江偉星新型建材股份有限公司、愛康企業(yè)集團（浙江）有

限公司、顧地科技股份有限公司、臺州市黃巖區(qū)計量與產(chǎn)品質(zhì)量安全檢測研究院、江蘇雙騰管業(yè)有限公

司、江蘇華塑新型建材有限公司、中國五洲工程設(shè)計集團有限公司。

本文件主要起草人：黃劍、邵慧彬、楊興月、李賢梅、夏春宇、李廣忠、楊建國、孫華麗、

王婭茹。

Ⅲ

GB/T44574—2024

建筑排水管道系統(tǒng)防污染用塑料止回閥

1范圍

本文件規(guī)定了建筑排水管道系統(tǒng)防污染用塑料止回閥（以下簡稱“止回閥”）的材料、設(shè)計、性

能、檢驗規(guī)則和標志、包裝、運輸、貯存等方面的要求，描述了相應(yīng)的試驗方法。

本文件適用于建筑物內(nèi)塑料排水管道系統(tǒng)防污染用止回閥的制造與檢驗。

注：選購方有責任根據(jù)其特定應(yīng)用需求，結(jié)合相關(guān)法規(guī)、標準或規(guī)范要求，恰當選用本產(chǎn)品。

2規(guī)范性引用文件

下列文件中的內(nèi)容通過文中的規(guī)范性引用而構(gòu)成本文件必不可少的條款。其中，注日期的引用文

件，僅該日期對應(yīng)的版本適用于本文件；不注日期的引用文件，其最新版本（包括所有的修改單）適用

于本文件。

GB/T1033.1塑料非泡沫塑料密度的測定第1部分：浸漬法、液體比重瓶法和滴定法

GB/T1040.2塑料拉伸性能的測定第2部分：模塑和擠塑塑料的試驗條件

GB/T1633熱塑性塑料維卡軟化溫度（VST）的測定

GB/T2828.1計數(shù)抽樣檢驗程序第1部分：按接收質(zhì)量限（AQL）檢索的逐批檢驗抽樣計劃