EcoMAXX No Return Valve

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EcoMAXX® No Return Valves Meet Current National Fire Protection Association (NFPA) Safety Requirements. 

Are you investigating dust collection explosion protection systems for your factory, workshop, or other industrial facility? Remember: NFPA requires that an explosion isolation device be installed on all suction side ducts that transport material with a KST value above zero (combustible dust). 

An EcoMAXX® No Return Valve is an integral safety smart component in any dust collection and combustible dust mitigation solution. The NRV is ATEX certified and will protect workers and facilities from the damaging effect of a baghouse or filter explosion. 

Standard Features

  • Heavy duty welded steel construction
  • Flanged inlet and outlet with co-flanges
  • Inspection/access door
  • Grounding lug
  • Locking mechanism
  • ATEX certification
    • EN16447

Available Options

  • Microswitch for system shut down*
  • Dust Level Sensor*
  • Intrinsically Safe Control Panel*
    • Alternatively, integrate your existing control panel or any new EcoBOSS® control panel.

* Required for NFPA 69 Compliance

Replacement Parts are available upon request


Available Option Details

All 3 of these options are required in order to meet NFPA 69 Compliance

Control Panel

EcoMAXX No Return Valve - Optional Control Panel

Control Panel for use with NFPA 69 compliant Explosion Isolation Valves.


  • Status Lights (green/red)
  • Intrinsic Circuit with barrier and physical separation (1 per zone)
  • Monitored Inputs
  • Ability to add a secondary clean air isolation valve
  • Output for system shut down and monitoring
  • NEMA 4 outdoor rated enclosure
  • Allows for 120VAC or 24VDC input power

Dust Level Sensor

EcoMAXX No Return Valve - Optional Dust Level SensorCapacitive, to ensure NRV is not compromised by a layer of dust accumulation



EcoMAXX No Return Valve - Optional Micro-SwitchFor System Shut Down

Different versions available.





For more information about the EcoMAXX® No Return Valve or to order replacement parts, contact us.