Do pedestrian dampers and pressureless dampers mean the same thing?

Do pedestrian dampers and pressureless dampers mean the same thing?
Pedestrian damper, main alley damper, balanced damper, mining damper, balanced damper, mining pressureless damper, mining split damper, small mining pedestrian damper
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Xinmin.com
News] Today, a queen girl became popular on social media. She is not an entertainment star or a new Internet celebrity, but Shi Yichan, the part-time deputy secretary of the Shanghai Communist Youth League who just took office yesterday. Years old, when he returned from overseas, he is the chairman of the youth charity organization Baicollar Yijia. He has never participated in the work of the Communist Youth League at the municipal level before.
According to the different uses and opening methods of the damper, the damper can be divided into
pressureless damper, adjustable damper, automatic damper and reverse damper
. Ordinary dampers, also known as pedestrian dampers, are used to cut off the wind flow in the roadway. They are opened manually and close automatically by relying on their own weight and wind pressure difference. They are often installed in pedestrian lanes or lanes with less traffic.
Pressureless damper
It is a damper that relies on external force to open and close automatically. It is suitable for tunnels where mine cars frequently pass through. The reverse air door is installed between the main air inlet tunnels of the mine. The reverse air door must be set at the same time. It is open during normal times and closed during reverse wind. The reverse air door can be divided into an anti-wind reverse air door and an anti-outbreak reverse air door. Two kinds.