精品国产一区二区三区四区阿崩-曰韩精品无码一区二区视频-天天狠天天天天透在线-欧美性插b在线视频网站-高潮流白浆潮喷在线播放视频

Pneumatic diaphragm double seat control valve adopts double-guide structure, the body structure is compact, the fluid channel is S-streamlined, the pressure loss is small and the flow flux is large, the adjustable range is wide, the flow characteristic precision is high.Due to the top and bottom of the spool guide, it has the characteristics of anti-seismic and wear resistance.The control valve is equipped with multi-spring film actuator, which has small structure and large output force, and is more suitable for good stability, high reliability, high pressure, high pressure difference and good control under the process conditions of the fluid medium containing silt and easy to block.