一、进口气动高真空挡板阀（活套法兰）概述

V-GDQ-J-A系列常闭型气动高真空挡板阀是通过电磁转向阀依靠压缩空气作为阀板启闭动力，在失去电源或压缩空气时，通径DN80以下的阀门将依靠弹簧力自动关闭阀门，DN100以上的阀门通过电磁阀组利用单向阀迅速关闭气缸原有的气源压力达到自动关闭阀门。从而达到真空系统中迅速切断气流之功能。V-GDQ-J型为角通型式，V-GDQ-S型为带预抽口的三通型式。
适用的工作介质为空气及非腐蚀性气体。

The V-GDQ-J-A series normally closed pneumatic high vacuum baffle valve relies on compressed air as the opening and closing power of the valve plate through an electromagnetic steering valve. When power or compressed air is lost, valves with a diameter of less than DN80 will automatically close the valve by spring force, while valves with a diameter of more than DN100 will quickly close the original air source pressure of the cylinder through an electromagnetic valve group using a one-way valve to achieve automatic valve closure. Thus achieving the function of quickly cutting off the airflow in the vacuum system. The V-GDQ-J type is a corner pass type, and the V-GDQ-S type is a three-way type with a pre extraction port.

The applicable working medium is air and non corrosive gases.

二、进口气动高真空挡板阀（活套法兰）主要性能参数