box type / tank type / cabinet type non-negative pressure water supply equipment

When the equipment running, one path of the water from tap water pipe network will flow into the water tank, then pass the inflow conversion device and flow to inlet port of the water pump, Another path of the water will pass the resist negative pressure module and flow into inlet port of the water pump directly. The water in the water tank is controlled by remote control float valve and the electric valve. When the pipe network water supply ability can meet our using demand, the pressure of the tap water can maintained normal level, resist negative pressure module will control the electric valve to open, the water pump will start to work,  the the required by the pipeline network of water supply capacity can satisfy the water, tap water pipe network pressure is within the scope of the normal pressure of water supply, the negative pressure module control electric valve is opened, pressure-superposed water supply is achieved. When the pipe network water supply ability can not meet our using demand, the pressure of the tap water is lower than normal level, resist negative pressure module will adjust the angle of electric valve to smaller automatically, so much as to turn off it, this adjustment will cut off the negative tank supplying path and transfer it to water tank supplying mode automatically.