Diaphragm air pressure tank adopts standard or non-standard design, standardized welding technology, with air replenishing and venting devices, and its surface is coated with advanced spraying technology. The utility model has the advantages of wide pressure range, strong corrosion resistance, convenient use and maintenance, safe and reliable operation, etc. It is widely used in pneumatic water supply equipment and pressurized and stabilized water supply equipment. Diaphragm air pressure tank is an energy storage device consisting of a steel shell and a rubber diaphragm liner. The rubber diaphragm completely separates the water chamber from the air chamber. When the water under pressure from the outside is filled into the liner of the diaphragm air pressure tank, the air sealed in the tank is compressed. According to Boyle's gas law, the volume of the compressed gas becomes smaller, the pressure increases, and energy is stored. The expansion of the compressed gas can press the water in the rubber diaphragm out of the tank.

  无负压罐是无负压供水设备系统必备的储能稳流装置，罐体采用优质材料设备制造，表面抛光处理。设备进水口与自来水管网连接，出水口与泵组连接。管网增压(无负压)稳流给水设备通过稳流罐和真空抑制器有效消除了市政供水不足的弊端。主要是通过以下过程来实现的:自来水不断进入罐体时，随着水位不断升高，罐体内的空气经真空补偿器自动排出。当水位上升到一定水位时，真空补偿器自动关闭，此时自来水仍不断进入，无负压体内部压力逐渐增大，直至罐内的压力等于自来水管网的压力。