97国产看片免费人成视频_卡通动漫日韩一三区_韩国三级中文字幕hd在线_国产成人综合网高清_色偷偷男人的天堂亚洲av_乱爱性全过程免费视频午夜_久久多多屋影院三级_日韩高清在线看AV片_久亚洲第一综合天堂另类专_国产一级男女牲交高潮大片

SD943H Electric Telescopic Butterfly Valve produced and sold by Baigang valve group for temperature ≤ 80 ℃, nominal pressure ≤ 1.6MPa food, medicine, chemicals, petroleum, electricity, textile, paper and other water supply and drainage, gas pipeline to regulate flow and interception of the role of media, with compensation for pipe thermal expansion Cold shrink function. Its main features are as follows: 
1, the design is novel, reasonable, unique structure, light weight, easy operation, quick opening and closing; 
2 telescopic butterfly valve in addition to the role of regulation and closure, compensation for pipe temperature difference caused by thermal expansion and contraction functions, Also for the installation of replacement, maintenance of the valve to provide convenience. 
3, sealing parts can be adjusted replacement, sealing and reliable performance.

SD943H Electric Telescopic Butterfly Valve actuator

1, Power: The motor is three-phase AC, 380V (special order 660V, 440V or 220V), 50Hz (special order 60Hz); Control line voltage 220V / 50Hz (special order 60Hz); Remote control voltage 24VDC. 
2, the ambient temperature: -20 ~ +60 ℃ (special order -60 ~ +80 ℃) 
3, the relative temperature: ≤ 90% (25 ℃) 
4, ordinary and outdoor for non-flammable / No corrosive medium place; Explosion-proof products are dI and dIIBT4 two, dI for non-mining coal mining face; dIIBT4 for the factory, for the environment for the IIA, IIB grade T1-T4 group explosive gas mixture. (See GB3836.1) 
5, protection class: outdoor type and explosion-proof type is IP55 (can be customized IP67). 
6, work system: for a short time 10 minutes (can be customized for 30 minutes).

SD943H Electric Telescopic Butterfly Valve main dimensions