The invention discloses non-negative pressure 
water supply equipment, and relates to the technical field of 
water supply equipment. The non-negative pressure 
water supply equipment comprises a flow stabilizing tank, a pressure stabilizing tank, a drain 
pipe, an output 
pipe and a water pump; the flow stabilizing tank is provided with a water inlet 
pipe, a water outlet pipe, an 
exhaust pipe and a blowdown device, the water inlet pipe is connected with a municipal water supply pipeline, and the water outlet pipe is connected with the drain pipe; a vacuum 
suppressor is arranged on the 
exhaust pipe; the drain pipe is communicated with the output pipe through a connecting pipe a and a connecting pipe b, and the water pump is arranged on the connecting pipe b; a pressure stabilizing pipe is arranged on the pressure stabilizing tank, one end of the pressure stabilizing pipe is communicated with the pressure stabilizing tank, and the other end is connected and communicated with the output pipe;the output pipe is connected with a user through a pipeline; and the blowdown device comprises a blowdown pipe, a 
sewage collecting tank, a partition plate, a 
piston a, a baffle ring, a sliding pipeand a floating ball a. According to the non-negative pressure water supply equipment, precipitated impurities in the flow stabilizing tank can be removed without shutdown.