Box-type negative pressure water supply unit
Description
Integrated unit combining stainless‑steel water storage box, negative‑pressure suppressor, stainless‑steel multistage pumps, VFD control system, pipe valves and base frame. It integrates water storage, anti‑negative‑pressure and superimposed water‑supply functions. Under normal municipal water supply, it makes use of network pressure for energy‑saving boosting; when municipal supply is insufficient or cut off, it switches to internal box water storage for continuous water supply. Strong adaptability for unstable municipal pipeline conditions. OEM & ODM available.
Key Features
‑ Combined stainless‑steel storage box and negative‑pressure suppressor, continuous water supply from internal tank during municipal water cutoff
‑ Negative‑pressure suppression module, prevents vacuum and protects municipal water pipeline
‑ Dual‑mode operation: energy‑saving superimposed boosting under normal inflow; auto switch to tank‑supply mode for insufficient municipal inflow
‑ SS304 / SS316 wetted components, prevent secondary drinking‑water pollution
‑ PLC closed‑loop VFD control, multi‑pump alternate operation, stable pressure output; complete protection for water shortage, overload, over‑voltage and fault alarm
‑ Fully pre‑integrated unit, box, pump set and control cabinet assembled in factory, only pipeline connection required on‑site
‑ Optional self‑cleaning and UV sterilization module for internal water tank to guarantee water quality
‑ Optional touch‑screen and IoT remote monitoring for convenient operation & maintenance
Technical Data Range
‑ Unit flow rate: 5‑320 m³/h
‑ Supply head: 15‑210 m
‑ Working pressure: 0.3‑2.1 MPa
‑ Pump quantity: 1‑6 units (2‑4 units typical)
‑ Internal tank volume: 1‑10 m³
‑ Power supply: 380‑400V 50Hz three‑phase, 60Hz customizable
‑ Wetted material: Tank, pumps and pipelines SS304 standard, SS316 optional
‑ Control mode: PLC + VFD cabinet, pressure closed‑loop control
‑ Optional accessories: UV sterilizer, tank self‑cleaning unit, touch screen, remote IoT monitoring module
‑ Medium: Municipal tap water, drinking‑water, clean fresh water
Applications
‑ Secondary water‑supply pump houses for high‑rise residential buildings (unstable municipal water pressure areas)
‑ Water‑supply systems for hotels, commercial complexes and office buildings
‑ Non‑interruptible water‑supply public buildings such as hospitals and schools
‑ Domestic & process water supply for industrial parks
‑ Old community pump‑house renovation under unstable municipal inflow
‑ Secondary‑supply projects for new urban constructions