欧美在线一-钻石午夜影院-黑人巨茎大战欧美白妇免费-一边吃奶一边摸做爽视频-亚洲精品免费在线-夜夜精品无码一区二区三区-欧美久久国产精品-亚洲女人av久久天堂-av最新网-乱人伦人妻中文字幕无码

The functions of the vacuum exhaust constant pressure unit include:
Constant pressure: Control the system pressure within the set range to ensure constant system pressure.
Vacuum exhaust: Degassing free and dissolved gases from the system through a vacuum state.
Hydration: Automatically replenish water to the system to ensure sufficient water supply.
Soft water: For units with soft water function, water quality softening treatment can be applied to the incoming water.
The application areas of vacuum exhaust constant pressure unit include:
Heating system: Suitable for heating systems in hotels, hospitals, public welfare venues, office buildings, etc., to ensure the stable operation of the heating system.
Refrigeration system: In the central air conditioning system, maintain stable system pressure to ensure cooling efficiency.