標(biāo)準(zhǔn)解讀

《GB/T 44574-2024 建筑排水管道系統(tǒng)防污染用塑料止回閥》是一項(xiàng)國家標(biāo)準(zhǔn)，主要針對用于建筑排水系統(tǒng)中防止污水倒流的塑料止回閥的技術(shù)要求、試驗(yàn)方法、檢驗(yàn)規(guī)則以及標(biāo)志、包裝、運(yùn)輸和貯存等方面進(jìn)行了規(guī)定。該標(biāo)準(zhǔn)適用于安裝在建筑物內(nèi)部排水管道上，旨在阻止下水道中的有害氣體或污水逆向流動(dòng)至室內(nèi)環(huán)境，保護(hù)人們健康與安全。

根據(jù)標(biāo)準(zhǔn)內(nèi)容，塑料止回閥應(yīng)具備良好的密封性能，能夠有效阻擋來自外部的壓力，確保即使在壓力差存在的情況下也不會發(fā)生泄漏。同時(shí)，還要求其結(jié)構(gòu)設(shè)計(jì)合理，便于安裝維護(hù)，并且材料需滿足耐腐蝕性好、使用壽命長的特點(diǎn)。此外，對于不同應(yīng)用場景下的工作溫度范圍也有明確限制。

標(biāo)準(zhǔn)詳細(xì)列出了產(chǎn)品尺寸規(guī)格、連接方式等物理特性參數(shù)；明確了閥門開啟壓力、關(guān)閉可靠性等關(guān)鍵性能指標(biāo)；并制定了相應(yīng)的測試程序以驗(yàn)證這些性能是否達(dá)標(biāo)。通過模擬實(shí)際使用條件下的各種工況進(jìn)行試驗(yàn)，如抗沖擊強(qiáng)度測試、耐壓性能檢測等，確保產(chǎn)品質(zhì)量符合要求。

在生產(chǎn)過程中，企業(yè)需要按照此標(biāo)準(zhǔn)嚴(yán)格執(zhí)行質(zhì)量控制流程，包括原材料選擇、生產(chǎn)工藝優(yōu)化及成品檢驗(yàn)等多個(gè)環(huán)節(jié)。只有經(jīng)過嚴(yán)格檢測合格的產(chǎn)品才能被允許出廠銷售。而消費(fèi)者或者工程采購方則可以通過查看產(chǎn)品上的標(biāo)識信息來判斷其是否符合國家標(biāo)準(zhǔn)要求。


如需獲取更多詳盡信息，請直接參考下方經(jīng)官方授權(quán)發(fā)布的權(quán)威標(biāo)準(zhǔn)文檔。

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文檔簡介

ICS

83.140.30

CCS

G33

中華人民共和國國家標(biāo)準(zhǔn)

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(shí)施

國家市場監(jiān)督管理總局發(fā)布

國家標(biāo)準(zhǔn)化管理委員會

GB/T44574—2024

目次

前言

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Ⅲ

1

范圍

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1

2

規(guī)范性引用文件

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1

3

術(shù)語和定義、符號和縮略語

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1

3.1

術(shù)語和定義

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1

3.2

符號和縮略語

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2

4

材料

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2

5

設(shè)計(jì)

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3

6

要求

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3

6.1

外觀

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3

6.2

顏色

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3

6.3

規(guī)格尺寸

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3

6.4

性能要求

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4

6.5

鉛限量

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5

7

試驗(yàn)方法

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5

7.1

狀態(tài)調(diào)節(jié)

·························································································

5

7.2

外觀和顏色

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5

7.3

尺寸

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5

7.4

密度

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5

7.5

維卡軟化溫度

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5

7.6

熔體質(zhì)量流動(dòng)速率變化率

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5

7.7

氧化誘導(dǎo)時(shí)間

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6

7.8

烘箱試驗(yàn)

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6

7.9

墜落試驗(yàn)

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6

7.10

流通能力

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6

7.11

水密性

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6

7.12

鉛限量

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6

8

檢驗(yàn)規(guī)則

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7

8.1

檢驗(yàn)分類

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7

8.2

組批和分組

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7

8.3

出廠檢驗(yàn)

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7

8.4

型式檢驗(yàn)

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8

8.5

判定規(guī)則

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8

9

標(biāo)志、包裝、運(yùn)輸、貯存

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8

Ⅰ

GB/T44574—2024

9.1

標(biāo)志

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8

9.2

包裝

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8

9.3

運(yùn)輸

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8

9.4

貯存

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8

附錄A（資料性）

止回閥的典型結(jié)構(gòu)

·································································

9

參考文獻(xiàn)

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10

Ⅱ

GB/T44574—2024

前言

本文件按照GB/T1.1—2020《標(biāo)準(zhǔn)化工作導(dǎo)則第1部分：標(biāo)準(zhǔn)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(jī)構(gòu)不承擔(dān)識別專利的責(zé)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(biāo)準(zhǔn)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(tuán)（浙江）有

限公司、顧地科技股份有限公司、臺州市黃巖區(qū)計(jì)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(jì)集團(tuán)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(jì)、性

能、檢驗(yàn)規(guī)則和標(biāo)志、包裝、運(yùn)輸、貯存等方面的要求，描述了相應(yīng)的試驗(yàn)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(yàn)。

注：選購方有責(zé)任根據(jù)其特定應(yīng)用需求，結(jié)合相關(guān)法規(guī)、標(biāo)準(zhǔn)或規(guī)范要求，恰當(dāng)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(yàn)條件

GB/T1633熱塑性塑料維卡軟化溫度（VST）的測定

GB/T2828.1計(jì)數(shù)抽樣檢驗(yàn)程序第1部分：按接收質(zhì)量限（AQL）檢索的逐批檢驗(yàn)抽樣計(jì)劃

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