乱人伦中文字幕-日本乱理伦片在线观看中文-色94色欧美sute亚洲线路二-久久成人亚洲香蕉草草-成人免费毛片网站-午夜亚洲国产-а天堂中文在线官网-麻豆人人妻人人妻人人片av-欧美亚洲精品真实在线-在线不卡国产-欧美精品网站-成人久久免费网站-911精品国产一区二区在线-成人做受视频试看120秒-91黄色看片

The extraction check valve is mainly used in steam turbine extraction system of thermal power plants to prevent the backflow of media or water, and plays a protective role on important facilities such as steam turbine and water pump. Its performance requirements are under the extraordinary conditions such as backflow of pipeline media, power failure, accident, etc., the valve is closed instantaneously with a closing time of less than 0.5 seconds.

Product models: H664H, H664Y
Nominal diameter: DN50 ~ 1000mm
Nominal pressure: PN1.0 ~ 10.0MPa
Operating temperature: ≤550℃
Main materials: WCB, WC6, WC9
Applicable medium: water, steam, air, oil
Design criteria: API 6D, BS 1868, GB/T 12235, GB/T 12236, JB/T 8937
Structure length: ASME B16.10, API 6D, GB/T 12221
Connection standard: ASME B16.5, ASME B16.47, ASME B16.25, GB/T 9113, JB/T 79, HG/T 20592
Pressure test: API 598, API 6D, GB/T 13927, GB/T 26480
Pressure and temperature classes: ASME B16.34, GB/T 12224