呦呦福利网I四虎影视永久免费在线观看I婷婷丁香自拍I国产精品久久久久久久久久久久久久久久I亚洲免费av网站I精品中文字幕在线播放I久草在线视频首页I爱搞搞就爱搞搞I9.1免费网站在线观看I男人的天堂操三I吉泽友贵番号I91精品成人I97成人网站I中出中文字幕

Ball Valve summary

Ball valve has the advantages of simple structure, quick switching, easy operation, small volume, light weight, few parts, least fluid resistance and good tightness.

Ball Valve scope of application

1. Suitable for medium with low temperature (≤150℃), high pressure and high viscosity;
2. Can not be used for flow regulation;For situations requiring quick opening and closing;
3. Usually, the ball valve is recommended to be used in the pipeline with two-position regulation, strict sealing performance, wear, shrinkage channel, rapid opening and closing action, high pressure cut-off (large pressure difference), low noise, gasification phenomenon, small operating torque and small fluid resistance;
4. Also suitable for light structure, low pressure cut-off, corrosive medium;

Ball Valve standard

API 6D/ISO 14313: Pipeline valves
API 608: Flanged, threaded and butt-welded end steel ball valves
- ISO 17292, Steel ball valves for the petroleum, petrochemical and refining industries
BS 5351: Steel ball valves
GB/T 12237: Flanged and butt-welded steel ball valves
DIN 3357: Ball valves
Shell SPE 77/100: Press BS5351 ball valve
Shell SPE 77/130: Flanged end and butt-welded end ball valves according to ISO14313