欧美亚洲伦理片_亚洲美女一级毛片_国产综合无码一区二区色蜜蜜_国产精品亚洲一区二区无码_精品国产免费人成网站_1区2区3区4区产品乱码入口

永嘉渤工閥門有限公司
  英文版    中文版
Bohai Valve Co., Ltd. Yongjia
Contact: Mr. Wang
Phone 577 -57796661 / 057796662
Fax 577 -67367855
Phone: 13806833242
E-mail: 258193218@qq.com
Address: Industrial Zone Oubei Puxi
NEWS

Storage method and application of electric ventilation butterfly valve

更新時間:2018.07.20
Electric butterfly valves include: hard - seal butterfly valves, soft - seal butterfly valves, ventilation butterfly valves, flanged butterfly valves, plastic butterfly valves and so on. Today we will briefly understand what is called the electric ventilation butterfly valve and its use.
Electric ventilation butterfly valve is a kind of closed type, suitable for building materials, metallurgy, mining, power and other production process of medium temperature 300 ℃ or less on the pipe nominal pressure of 0.1 Mpa, to connect and open/close or adjusting medium quality. It is mainly used as a gas medium to adjust the flow rate or cut off device in the ventilation and environmental protection projects of the industries of gold, chemical, building materials, power stations and glass. The electric ventilation butterfly valve is designed and manufactured by means of a new structural form of welding between a midline disc and a short structural steel plate. Its maintenance and storage methods:
1. Electric ventilation butterfly valve shall be stored in a dry and ventilated room and shall not be stored in the open air; Seal ring should not contact with oil to avoid aging.
2. Storage and transportation: a. Use the airtight cover at both ends of the path to prevent dust and rust, and keep the passage clean. B. The two end machining surfaces of the electric butterfly valve shall be cleaned of dirt and coated with anti-rust agent.
3. Electric butterfly valves with a storage period of more than 18 months shall be re-tested before installation to ensure the integrity of structure and function.
4. When the electric butterfly valve is placed, it shall ensure that the electric device is not damaged by extrusion and wiring terminals, and prevent contact with corrosive substances. Handle with care to avoid damaging electrical and mechanical parts.
TD941W type electric ventilation and control butterfly valve is recommended.
More details on electric butterfly valves: www.yxhj800.cn
今天是
HOME ABOUT US NEWS PRODUCTS NETWORK ORDER <CONTACT US 中文

Copyright 2013 Bohai Valve Co., Ltd. Yongjia LUOTUO All Right Reserved. Address: Yongjia County, Wenzhou City, Zhejiang Province town of North ICP No.: ICP 12045727 No. -1

主站蜘蛛池模板: 免费无码AV片在线观看中文 | 免费的特黄特色大片 | 男女啪啪无遮挡免费网站 | 91精品一本久道久久丁香狠狠躁 | 又粗又黄又猛又爽大片免费 | 47pao国产成永久免费视频 | 成人日韩视频 | 欧美在线视频观看 | 日日撸夜夜撸 | 人人爽人人爽人人片 | 亚洲精品有限 | 蜜桃视频一区二区三区四区开放时间 | 综合久久一区二区三区 | 国产伦精品一区二区三区视 | 欧美浓毛大BBwBBW | 92精品国产自产在线观看48 | 老女BBWBBWBBWBBW高潮 | 精品国产亚洲一区二区三区大结局 | 国产在线拍揄自揄视频菠萝 | 不卡中文一二三区 | 四虎院影wwwf678com | 国内精品久久久久影院优 | 欧美日韩国产三级 | 成人午夜视频免费 | 亚洲国产永久 | 无码精品久久久久久人妻中字 | 国产精品成熟老妇女 | 免费在线观看黄视频 | 日韩精品一区二区AV在线观看 | 亚洲成无码人在线观看 | 免费逼片| 午夜dj视频免费观看www | 人九九精品 | 俺也去操 | 国产精品国产三级国产aⅴ中文 | 亚洲欧美中文字幕日韩一区二区 | 色综合视频二区偷拍在线 | 中文字幕日韩精品有码视频 | 91资源免费视频 | 一个人看的www免费高清在线视频 | 欧美日韩精品人妻狠狠躁免费视频 |