1. Stainless steel integrated pump and tank water tanks commonly feature a vacuum relief function to avoid disrupting the municipal pipeline pressure. However, this function is achieved through a regulating tank with a shutoff valve before the pump. When the water demand exceeds the municipal supply, the vacuum destruction device on the regulating tank activates, allowing air into the tank and transforming the originally sealed tank into a shutoff tank. But, since the vacuum destruction device for the shutoff function on the direct water supply equipment is an exposed device, it can be manually adjusted by the user. When the user disables the opening function, the regulating tank loses its shutoff function and becomes a vacuum device, rendering the vacuum relief function of the direct water supply equipment inoperable, posing a severe threat to water supply safety.

2. Due to the integrated tank pump of stainless steel box having a shutoff function, it is essentially impossible to run completely sealed. There is still a possibility of air entering the water supply system and contaminating the water quality.

3. Accelerate the development of product standards and engineering specifications for integrated stainless steel tank-pump water tanks. The establishment of these standards will promote technological advancement and export, while also guiding market and technological development, and regulating the industry's growth.