青青青国产91蜜臀一区二区_国产日韩精品情侣AV_国产在线91国语_日本黄a在线网站大全_A在线视频这里只有精品_亚洲丁香五月亚洲欧美_天堂欧美城网站网址_影视自拍高清无码_粉嫩嫩国模无码大尺度视频_国产亚洲欧美日韩在线爱豆

Common valve series

Sfd-f fire vent (National Standard Code: FHF wsdj / dc-fk + aluminum alloy vent)

Sfd-f fire vent (National Standard Code: FHF wsdj / dc-fk + aluminum alloy vent)

Purpose and characteristics:


Fire vent is a combination of aluminum alloy vent and battery controlled fire damper, which is normally open. When the temperature reaches 70 ℃, the valve is closed, which plays a role of fire and smoke prevention. When installing, connect the fire damper with the pipeline first, and then connect the tuyere with the fire damper with the self tapping screw. It can also be made into a double-sided fire vent, which is usually installed in the partition wall of two areas and plays a role of ventilation at ordinary times.


Description: specifications and sizes can be customized according to customer needs. Generally used for underground garage pipes.


When the valve size is greater than 1250 * 800, the valve is processed by a combination of several valves smaller than the limit size.

 

The specific performance table parameters are subject to the test report!防火閥系列產(chǎn)品安裝及注意事項.png

Purpose and characteristics:


Fire vent is a combination of aluminum alloy vent and battery controlled fire damper, which is normally open. When the temperature reaches 70 ℃, the valve is closed, which plays a role of fire and smoke prevention. When installing, connect the fire damper with the pipeline first, and then connect the tuyere with the fire damper with the self tapping screw. It can also be made into a double-sided fire vent, which is usually installed in the partition wall of two areas and plays a role of ventilation at ordinary times.


Description: specifications and sizes can be customized according to customer needs. Generally used for underground garage pipes.


When the valve size is greater than 1250 * 800, the valve is processed by a combination of several valves smaller than the limit size.

Hot recommendation

Wdxf-b flat swirl tuyere

Wdxf-b flat swirl...

View details
Watcd-f temperature sensing circular diffuser

Watcd-f temperatu...

View details
Wdbf-c floor diffuser

Wdbf-c floor diff...

View details
主站蜘蛛池模板: 欧美动态图日韩免费电影 | 三级视屏在线播放 | 岛国av一区二区 | 免费无码婬片AAAA片直播孕妇 | 欧美日韩精品一二三区咪咪爱 | 蜜桃av鲁一鲁一鲁一鲁樱花影院 | 亚洲精品中文字幕无码 | 国产无遮挡A片又黄又爽 | 国产91 国语对白在线 | www.国产一区 | 男女猛烈进入120秒动态图 | 亚洲无码高清视频一区二区 | 亚洲AV无码久久精品成人 | 男女a片亚洲精品 | 国产男女午夜爽爽 | 久久精品中文字幕第一页,亚洲天堂无码 | 国产午夜性爱不卡在线视频 | 99精品人妻一区二区三区中文 | 夜夜夜夜夜成人精品免费视频 | 日韩精品一级毛片 | 91亚洲精品一区二区三 | 好大灬好硬灬好爽灬无码300 | 国产精品成人AAAA网站女吊丝 | 无码午夜精品一区二区三区分类 | 强伦轩一级A片免费播放 | 影音先锋人妻啪啪aV资源网站 | 性久久久久久久久久久 | 最好看的2019中文在线阅读 | 国产免费观看视频 | 亚洲大片黄在线观看私人影院蜜月 | 婬妇BBW搡BBBB搡BBBB | 91超漂亮美女口爆吞精 | 性爱免费观看网站 | 亚洲日韩视频在线 | 免费看黄色视频网站 | zjzjzj亚洲熟妇在线观看 | 很黄的视频在线观看 | 少妇看A片自慰免费蜜臀 | 无码少妇久久精品久久精品 | 亚洲激情视频在线观看 | 大又大粗又粗爽又爽少妇 |