Earthsafe DEF Tank

UM6-S DEF Storage Tanks - Cubic Stainless Steel

for Generator Emissions Control

UM6-S DEF Urea Day Tanks provide safe storage of DEF Urea for generator SCR emission controls.  The cubic design saves space in crowded generator rooms or enclosures.  The UMs is available as single wall, double wall, or double wall insulated. The UM6 can be customized for the application with instrumentation, heaters, and pumps. Controls interface with generator systems with High, Low, Leak contacts or optional Modbus / BACnet connectivity. 

Get the Data Sheet

Data Sheet: UM6S Data Sheet

Dimension Drawing: UM6 Dimension Drawing

Instruction Manual: UM6 Instruction Manual


  • Construction: Single Wall, Double Wall, DW Insulated
  • Material: Stainless Steel 304
  • Capacity: 25-1000 GAL (100 - 4000L)
  • Power 120-230 VAC, 1 Phase, 50-60 Hz
  • Controller: UL 508, PLC Basis with HMI
  • Interface: Output Relays for High, Low, Leak and Modbus (Optional BACnet)


  • Inlet Solenoid Valves with Strainer and Ball Valve
  • 4 or 5 Point Level Sensor and Leak Sensor
  • Level and Temperature Transmitters
  • Standard and Emergency Vents
  • Direct Read Level Gauge
  • Inspection Port and Cap
  • DEF Supply and Return Connections

DEF Urea Systems Built for Generators: 

The UM5 DEF Urea Day Tanks is specifically designed for generator SCR systems.  The cubic design is space saving within enclosures or generator rooms.  Available in Stanless Steel 304 or cost saving and lightweight HDPE plastic.  

Integrated Building Management Systems: 

Earthsafe advanced controllers allow for the communication of vital tank operating information to other building systems. These systems may include Building Automation Systems, generator controls, switchgear and other power controls, security and fire alarm systems.

Readily Adaptable for Special Operation: 

Earthsafe day tanks can be readily adapted for special operation characteristics such as: dual inlet valves, monitored valve positions, high level / overflow pumping, emergency evacuation, auto-commissioning, fluid metering, high temperature control.