variomix: dispensing system for PU, epoxy and silicone

Precise dosing of highly filled materials

The variomix is a pneumatic driven piston pump type metering and mixing system, used to handle low to high viscosity multi component media such as epoxy resins, polyurethanes or silicones. They can be unfilled, filled as well as abrasive. The system is built in different configurations.


These modern metering systems can be used in any industry where materials need to be applied in a high precision and repeatable way.

  • Automotive
  • Electrical and electronic
  • Renewable energy
  • Aerospace
  • White goods
  • and many more

Typical Applications

  • Coating
  • Encapsulating
  • Gluing
  • Laminating
  • Sealing

Features and Benefits

  • Simple operation
  • Variable mixing ratio
  • Variable output rate
  • Continuous flow rate
  • Solvent free


Pressure vessels, mounted onto a portable chassis, are used to supply the material into the piston type metering pumps where they are proportioned at the pre-selected ratio. The pumps are driven by an air motor. The stroke of the air motor is transferred to the pumps via a lever system. The mixing ratio can be infinitely adjusted between its limits by means of the lever system. The system is controlled by a metering

The variomix is fitted with a static mixing system that includes a 2K valve combined with a disposable
static mixer. The valve contains an infinitely adjustable «snuffer» effect to avoid dripping after metering has finished. Should mixed material be allowed to cure in the mixer, it can be replaced simply and inexpensively, thus avoiding a time consuming, expensive and environmentally damaging flushing cycle.

Technical specifications

Flow rate up to 2 l / min with A1, depending on mixing ratio and viscosity
up to 8 l / min with A2, depending on mixing ratio and viscosity
Mixing ratio 100 : 100 to 100 : 10, by volume with A1
100 : 100 to 100 : 6, by volume with A2
Maximum working pressure 200 bar
Mixing system ▪ Static mixing system
▪ 2K valve
▪ Disposable static mixer
Material supply Pressure vessels (6 to 120 l)
Viscosity range 50 to 80,000 mPa s, with pressure vessel
up to 1,000,000 mPa s, with drum pumps
Material characteristics Unfilled, filled, abrasive
Power supply 110-480 VAC 3/PE / 50/60Hz
230 VAC L/N/PE / 50/60Hz
Maximum air inlet pressure 6 bar
Dimensions, L x W x H from 1,500 x 1,100 x 1,900 mm
Weight from 400 kg


  • Pressure vessel
  • Double acting piston pumps
  • Air motor with lever system
  • Static mixing system
    • Twin snuffer valve
    • Disposable static mixer
  • Metering computer with realtime Multitasking Operating System (64 programs be stored as standard, including 32 programs via external selection)
  • 7“ colour touch screen terminal


  • Static-dynamic mixing system
    • with mixer element monitoring
  • Material pressure regulator
  • Material filter
  • Mixing ratio control and output rate through volume counters
  • Adjustable output rate
  • Start/stop trigger via handle grip or foot switch
  • Pressure vessel with
    • level control
    • agitator
    • automatic refill
    • connection for vacuum pump
  • Material supply through drum pumps for high vicosity materials
  • Bypass
  • Heating