Vertical Pressure Filter

Vertical pressure filters

Filtration of Smaller Flows with Vertical Pressure Filters

Vertical pressure filters consist of a pressure vessel with an overdrain system for distribution of influent water and collection of backwash waste.

Vertical pressure filters:

  • Maintain system pressure through the treatment process
  • Eliminate backwash supply pumps
  • Utilize several media configurations
  • Isolate individual filtration vessels

Vertical pressure filters provide granular media treatment in an enclosed pressure vessel. Multiple vessels can be used to allow operating flexibility and backwashing from in-service cells. Under 1 MGD (4 MLD), they are more economical than horizontal pressure filters.

Vertical pressure filters are typically applied in small to medium sized plants. Individual, parallel operating vessels satisfy redundancy requirements and offer a modular design that is easily expanded with increasing water demand.

Vertical pressure filters are ideally suited for deep bed filtration, ion exchange, and adsorptive medias such as GAC and activated alumina.

WesTech has been designing and supplying pressure filtration systems for more than 35 years in both the industrial and municipal markets. This broad experience base translates into extensive process knowledge that offers the best of both worlds, a robust filter which can operate in the harshest environments while consistently producing the highest water quality demanded by drinking water standards.

WesTech offers standards for both stand-alone and skid-mounted systems. In either case, the system piping, valves, controls, and instrumentation should be supplied by WesTech to maintain unit responsibility. As with all WesTech equipment, customization to your specific needs is our focus.


  • Enclosed filtration system
  • Water only or air scour backwash
  • Underdrains can be joined
  • Multiple vessels in a single system possible
  • Vessel design and manufacturing includes non-code or ASME code with stamp for a wide range of operating pressures


  • Line pressure maintained
  • Re-pumping after filtration eliminated
  • Provides most effective backwash for a specific system
  • Allows backwashing from in-service cells
  • Reduced backwash flow rate
  • Flexibility of operation
  • Manganese ANTHRA/SAND™ media, when used in these filters, provides enhanced manganese removal at a cost lower than manganese greensand


  • Removal of contaminants including iron, manganese, arsenic, and PFAS
  • Pretreatment to reverse osmosis
  • Fluoride removal
  • Cooling tower make-up
  • Surface water treatment
  • Other industrial process water treatment