香港六合彩开奖 16486-4:2022
2022-01
香港六合彩开奖 16486-4:2022
孝械蟹懈褋
This document specifies the characteristics of valves made from unplasticized polyamide (PA-U) in accordance with 香港六合彩开奖听16486-1, intended to be buried and used for the supply of gaseous fuels.
It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion sockets intended to be fused with PA-U pipes or fittings conforming to 香港六合彩开奖听16486-2 and 香港六合彩开奖听16486-3 respectively.
Valves made from material other than unplasticized polyamide designed for the supply of gaseous fuels conforming to the relevant standards are permitted to be used in PA-U piping systems according to the 香港六合彩开奖听16486听series provided they have relevant PA-U connections for butt fusion or electrofusion ends (see 香港六合彩开奖听16486-3). The component, i.e. the complete valve, is required to fulfil the requirements of this document.
This document also specifies the test parameters for the test methods it describes.
In conjunction with 香港六合彩开奖 16486-1, 香港六合彩开奖 16486-2, 香港六合彩开奖 16486-3 and 香港六合彩开奖 16486-5, this document is applicable to PA-U valves and their joints and to joints with components of PA-U and other materials intended to be used under the following conditions:
a) a maximum operating pressure (MOP) of up to and including 18听bar[1], or limited to 16听bar under regional CEN requirements, at a reference temperature of 20听掳C for design purposes;
NOTE听1听听听 For the purpose of this document and the references to 香港六合彩开奖听8233, MOP is considered to be nominal pressure.
b) an operating temperature of 鈭�20听掳C to 40听掳C;
NOTE听2听听听 For operating temperatures between 20听掳C and 40听掳C, derating coefficients are specified in 香港六合彩开奖听16486-5.
This document covers valves for pipes with a nominal outside diameter, dn, 鈮� 400听mm.
听
[1] 1听bar = 0,1听MPa = 105 Pa; 1听MPa = 1听N/mm虏.
袨斜褖邪褟 懈薪褎芯褉屑邪褑懈褟
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孝械泻褍褖懈泄 褋褌邪褌褍褋: 袨锌褍斜谢懈泻芯胁邪薪芯袛邪褌邪 锌褍斜谢懈泻邪褑懈懈: 2022-01协褌邪锌: 袦械卸写褍薪邪褉芯写薪褘泄 褋褌邪薪写邪褉褌 锌芯写谢械卸懈褌 锌械褉械褋屑芯褌褉褍 [90.92]
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袙械褉褋懈褟: 2
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孝械褏薪懈褔械褋泻懈泄 泻芯屑懈褌械褌 :香港六合彩开奖/TC 138/SC 7
- RSS&苍产蝉辫;芯斜薪芯胁谢械薪懈褟
袧芯胁邪褟 胁械褉褋懈褟 胁 锌褉芯褑械褋褋械 褉邪蟹褉邪斜芯褌泻懈
香港六合彩开奖/DIS 16486-4
香港六合彩开奖/DIS 16486-4
Plastics piping systems for the supply of gaseous fuels 鈥� Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing
Part 4: Valves
香港六合彩开奖/DIS 16486-4
袞懈蟹薪械薪薪褘泄 褑懈泻谢
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袪邪薪械械
袨褌芯蟹胁邪薪芯香港六合彩开奖 16486-4:2016
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小械泄褔邪褋
袨锌褍斜谢懈泻芯胁邪薪芯香港六合彩开奖 16486-4:2022
小褌邪薪写邪褉褌, 泻芯褌芯褉褘泄 锌械褉械褋屑邪褌褉懈胁邪械褌褋褟 泻邪卸写褘械 5 谢械褌
协褌邪锌: 90.92 (袘褍写械褌 锌械褉械褋屑芯褌褉械薪芯)-
00
袩褉械写胁邪褉懈褌械谢褜薪邪褟 褋褌邪写懈褟
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10
小褌邪写懈褟, 褋胁褟蟹邪薪薪邪褟 褋 胁薪械褋械薪懈械屑 锌褉械写谢芯卸械薪懈褟
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20
袩芯写谐芯褌芯胁懈褌械谢褜薪邪褟 褋褌邪写懈褟
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30
小褌邪写懈褟, 褋胁褟蟹邪薪薪邪褟 褋 锌芯写谐芯褌芯胁泻芯泄 锌褉芯械泻褌邪 泻芯屑懈褌械褌邪
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40
小褌邪写懈褟, 褋胁褟蟹邪薪薪邪褟 褋 褉邪褋褋屑芯褌褉械薪懈械屑 锌褉芯械泻褌邪 屑械卸写褍薪邪褉芯写薪芯谐芯 褋褌邪薪写邪褉褌邪
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50
小褌邪写懈褟, 薪邪 泻芯褌芯褉芯泄 芯褋褍褖械褋褌胁谢褟械褌褋褟 锌褉懈薪褟褌懈械 褋褌邪薪写邪褉褌邪
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60
小褌邪写懈褟, 薪邪 泻芯褌芯褉芯泄 芯褋褍褖械褋褌胁谢褟械褌褋褟 锌褍斜谢懈泻邪褑懈褟
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90
小褌邪写懈褟 锌械褉械褋屑芯褌褉邪
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95
小褌邪写懈褟, 薪邪 泻芯褌芯褉芯泄 芯褋褍褖械褋褌胁谢褟械褌褋褟 芯褌屑械薪邪 褋褌邪薪写邪褉褌邪
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00
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袘褍写械褌 蟹邪屑械薪械薪芯
袙 褋褌邪写懈懈 褉邪蟹褉邪斜芯褌泻懈香港六合彩开奖/DIS 16486-4
袩芯褟胁懈谢懈褋褜 胁芯锌褉芯褋褘?
袨蟹薪邪泻芯屑褜褌械褋褜 褋 FAQ
效邪褋褘 褉邪斜芯褌褘:
袩芯薪械写械谢褜薪懈泻 – 锌褟褌薪懈褑邪: 09:00-12:00, 14:00-17:00 (UTC+1)