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: 亚洲AV无码国产精品二区授乳 | 日日噜噜噜夜夜爽爽狠狠 | 漂亮少妇高潮A片XXXX | 久久婷色综合色欲 | 无码一二三区A片内谢 | 国产乱婬成人免费网站 | 性做爰A片免费播放 | 日韩人妻精品无码一区二区三区 - 百度 | 性一交一乱一奷一区二区三区下载 | 97人人爽人人爽人人爽 | 国产精品久久久久久白浆色欲 | 日本AAA高清无码www | HEYZO无码综合亚洲精品麻豆 | 亚洲精品国产欧美一二区色欲 | 岳乱妇一区二区三区中文字幕 | 三人成全免费观看电视剧高清一共多少集啊 | 国产精品老熟女视频一区二区 | 午夜精品久久久久久久爽懂色 | 极品美女酒店视频清晰对白在线观看 | 欧美成人影视在线观看 | 99国产精品一区二区三区 | 又爽又爆又粗又大又长 | 亚洲无码黄片链接无码链接 | 久久久亚洲av无码鲁丝 | 成年女性午夜爽爽爽视频 | 久久久无码精品亚洲A片 | 媚药人妻在线中文字幕 | 无码欧美日韩二区三区蜜桃 | 99久久人妻无码精品系列涩谷 | 香蕉91成人一区二区三区飘花 | 成年人黄色免费小视频 | 日本男女日批嗷嗷叫的视频播放 | 蜜臀AⅤ一区别二区三区 | 国产中文字幕二区在线 | 少妇做爰特黄A片免费看 | 亚洲人免费视频在线观看 | 欧美在线观看AAA | 国产一区二区三区裸体视频在线观看 | 特级西西WWW96 | 国产高清无码视频在线观看 | 都市 激情 亚欧 经典 综合 |