Pneumatic double diaphragm pumps with pressure transmission for material pressures up to 20 bar. Ideal for feeding and supply of higher-viscosity material through long hose lines in circulation systems or stub-line airspray applications.


The pumps are suitable to feed even higher viscose material in higher volume. The pressure ration of 3:1 allows material pressure of 15 bar at 5 L/min. even with higher viscosity rates.

High potential of savings
Due to the higher pressure, the diameter of the material hoses can be selected to be smaller. This means that there is significantly less unused material in circulation, saving costs, material and time when changing colors and rinsing.

Durable and robust
In addition to its compact design, the Unica 3-125 is extremely robust and durable. Maintenance and service work can be carried out quickly and easily.

Technical Data

Technical Data

Application Area

Metal Coating, Plastic Coating, Wood Coating

Application Technique


Processable Materials

Solvent-Borne, Water-Borne, Abrasive, Sensitive to Moisture

Material Wetted Parts

Stainless Steel, PTFE


Complies With ATEX Directive, Complies With CE Directive

Material Outlet

F G 3/4''

Compressed Air Connection

F G 1/2''

Air Inlet Pressure

1.5-6 bar

Max. Material Pressure

21 bar