四虎精品一区二区免费-汤唯的三级av在线播放-成人精品毛片-在线免费毛片-欧美午夜性春猛交xxxx按摩师-色欲天天天无码视频-美日韩在线视频-精品国产乱码久久久久久108-韩日av一区二区-免费做a爰片久久毛片a片-在线色网站-久草视频免费播放-国产色综合天天综合网-日韩一区二区三区精品-精品国产午夜理论片不卡精品-欧美日韩视频-av中文字幕网站-国产毛茸茸-国产精品一区二区av不卡-少妇无码一区二区二三区

ZSDⅡC Pneumatic Parallel Cut-off Gate Valve structural characteristics and working principle

1, the output of the implementing agencies through the valve stem on the role of the main spool, is designed to a certain angle, the main spool, converted into horizontal force around, but also through the secondary spool, sealing plate squeeze the two seats to form a double Negative seal, the seal does not leak, the torque is small, the switch valve seal with friction-free, fundamentally solve the spool stuck in the valve body or open the shortcomings of the phenomenon.

2, the pneumatic actuator adopts piston-type mechanism, the solenoid valve as the upper and lower part of the cylinder to control intake and exhaust switching elements to control the vertical opening and closing pieces for vertical displacement to control the valve opening and closing purposes,

3, with the use of the echo device for sending the valve switch-like signal, solenoid valve to achieve long-distance control, centralized control, automatic control, and on-site operation.

5, the valve opening and closing state of the scene instructions, the coat of the extension of the indicator rod to rise and fall, marking the valve is fully open (outrigger in the highest position), the valve is fully closed (outrigger in the lowest position).