In addition, indoor air system, heat recovery systems, central vacuum system, fire doors Solenoid Valve Control system and indoor fire hose system configurations are rare in China.
此外，室内空气系统，热回收系统，中央真空系统，防火门电磁阀控制系统和室内消防水带的系统配置在中国是罕见的。
Working principle: when the internal piping and tank vacuum, atmospheric pressure will be the valve cover, air enters the system, balance the system pressure, eliminate the effect of vacuum.
工作原理：当管道和水箱内部形成真空时，大气压便会顶开阀盖，大气进入系统内部，平衡系统压力，消除真空影响。
It consists air blowing system, heating system, vacuum vehicle, vacuum pump, vacuum valve and alarm equipment.
本机组由风循环系统、加热系统、真空车、真空泵、真空阀等部件组成，并设有报警装置。
The pressure of the positive pressure cavity is maintained by an air compressor and a vacuum and regulated by the corresponding adjusting valve.
正负压腔的压力由空压机和真空泵维持并由相应的调节阀调节。
CF pneumatic high vacuum flapper valve USES solenoid directional valve to change the direction of air passage, and controls the actuating cylinder to drive the valve opened and closed.
CF高真空挡板阀系列是通过电磁换向阀改变气路方向，控制执行气缸驱动阀门作启闭运动。
Intake stroke: the camshaft opens the intake valve and the piston moves down the cylinder. This creates vacuum and sucks in air and fuel into the combustion chamber above the piston.
进气行程：凸轮轴打开进气阀，活塞在汽缸中向下运动，产生一段真空。
GDQ pneumatic high vacuum flapper valve USES solenoid directional valve to change the direction of air passage, and controls the actuating cylinder to drive the valve opened and closed.
真空挡板阀是通过电磁换向阀改变气路方向，控制执行气缸驱动阀门作启闭运动。
GDQ pneumatic high vacuum flapper valve USES solenoid directional valve to change the direction of air passage, and controls the actuating cylinder to drive the valve opened and closed.
GD Q型气动高真空挡板阀是通过电磁换向阀改变气路方向，控制执行气缸驱动阀门作启闭运动。
GI high vacuum butterfly valve is used to put through or cut off the airflow in vacuum pipeline. Applicable medium can be pure air and noncorrosive gases.
GI型高真空蝶阀用于接通或切断真空管路中的气流。适用介质为纯净空气和非腐蚀性气体。
GIQ pneumatic high vacuum butterfly valve uses solenoid directional valve to change the direction of air passage, and controls the actuating cylinder to drive the butterfly valve opened and closed.
秦工生产的GIQ型气动高真空蝶阀是通过电磁换向阀改变气路方向，控制执行气缸驱动蝶阀作启闭运动。
The vacuum freshness preservation box comprises a box body, a cover body, an inflating valve and an air pumping valve.
真空保鲜盒包括盒体，盖体，充气阀和抽气阀。
The utility model provides a double-stage slide valve vacuum pump, which consists of an air pipe and two slide valve cylinders.
一种双级滑阀真空泵，由气路管道和二级滑阀缸组成。
GIQ pneumatic high vacuum butterfly valve USES solenoid directional valve to change the direction of air passage, and controls the actuating cylinder to drive the butterfly valve opened and closed.
GIQ型气动高真空蝶阀是通过电磁换向阀改变气路方向，控制执行气缸驱动蝶阀作启闭运动。
GIQ pneumatic high vacuum butterfly valve USES solenoid directional valve to change the direction of air passage, and controls the actuating cylinder to drive the butterfly valve opened and closed.
真空蝶阀是通过电磁换向阀改变气路方向，控制执行气缸驱动蝶阀作启闭运动。
On the intake stoke, the piston moves down and the intake valve is opened, a vacuum is produced and causes air to be drawn or pulled into the engine.
在进气行程，活塞下行，进气门开启，产生真空使空气被吸进发动机。
Typical applicable locations are: air compressor, vacuum pump, compressing air pipeline, pressure regulating valve, testing equipment, and medical sterilizer, etc.
典型的应用场所为：空气压缩机、真空泵、工艺管路、调压阀、测试设备、医用消毒器等。
Typical applicable locations are: air compressor, vacuum pump, compressing air pipeline, pressure regulating valve, testing equipment, and medical sterilizer, etc.
典型的应用场所为：空气压缩机、真空泵、工艺管路、调压阀、测试设备、医用消毒器等。
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