MST Series Water Softener

The MST water softener systems are designed to fit the requirements of many types of commercial and institutional applications.

MST Series Water Softener

Whether it is for boiler feed or domestic supply water for a school or hotel, the MST offers a robust and efficient solution for reducing mineral scale, soap usage, and energy consumption in the plumbing and other water using equipment.

Standard Features

  • Carbon steel resin tanks with epoxy-lined interior
  • Upper/Lower vessel handholes (4" x 6")
  • Piston driven, multiport, top mount control valves
  • Meter initiated regeneration cycle
  • Brine tank assembly with safety overflow
  • Sodium form cation exchange resin
  • Water hardness testing kit

Materials of Construction

  • Control Valve Body: Low-lead brass
    Fleck 2900 - 2" valve
    Fleck 3900 - 3" valve
  • Resin Tanks: Carbon steel with Safety Blue exterior paint
  • Tank Lining: NSF 61 rated epoxy coating
  • Internal Distributors: Sch 80 PVC/ABS
  • Brine Tank: Corrosion resistant polyethylene


  • Metered 'NXT' control interface
  • LED Display screen, status lights
  • On board diagnostics and error reporting
  • Meter: 2" Noryl turbine or 3" Signet paddle-type flow totalizer

Operating Parameters

  • Inlet pressure: 30 – 100 psig
  • Electrical: 24V circuitry
  • 120/24 VAC, 50/60 Hz wall mount transformer
  • Temperature: 35 – 100 °F


Skid mounted and pre-piped system Sch 80 PVC or Copper piping
Multi-tank system configurations (Twin, Triple)
Alternating or Progressive flow configurations
Building Management System (BMS) communication
ASME rated pressure vessels
Seismic rated designs
Stainless steel turbine type meters (2" and 3")
Inlet/Outlet pressure gauges and sample valves
Larger brine tanks
Multiple voltage options
Side mount control valves

Puretec Industrial Water provides a complete line of water treatment services and parts across California, Arizona, Nevada, and New Mexico.