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  • EcoMAXX No Return Valve
  • Example Application - EcoMAXX No Return Valve
  • Optional Features - EcoMAXX No Return Valve
  • Optional Control Panel - EcoMAXX No Return Valve
  • Optional Dust Level Sensor - EcoMAXX No Return Valve
  • Optional Micro-Switch - EcoMAXX No Return Valve
  • Dimensions (for 7"-28") - EcoMAXX No Return Valve
  • Dimensions (for 32"-40") - EcoMAXX No Return Valve
  • EcoMAXX System

EcoMAXX No Return Valve


Product Description

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.

An EcoMAXX No Return Valve is an integral safety smart component in any dust collection and combustible dust mitigation solution.

Key Features
  • Heavy-duty welded steel construction
  • Flanged inlet and outlet with co-flanges
  • Inspection/access door
  • Grounding lug
  • Locking mechanism
  • ATEX certification
    • EN16447 & EN15089
  • 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 including:

  • Replacement Breaking Element
  • Replacement Gasket
  • Replacement Locking Mechanism
Available Options

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

Intrinsically safe Control Panel for sensor power and integration with existing, new or EcoBOSS Control Panel


  • Original, 2-Zone, 3-Zone, 4-Zone
    • Differences are in the models
    • SS304 enclosure option available
  • Requires 120VAC input power standard
    • 24VDC option also available
  • Status Lights (green/red)
    • 1 for original, 2 sets on 2-Zone, 3 sets on 3-Zone, 4 sets on 4-Zone
  • Required Relays
  • Fusing and intrinsic barrier for explosive environments
  • 2, 4, 6, 8 terminals  for microswitch connection (2 per zone)
  • intrinsic circuit with barrier
  • Output for system shutdown and monitoring
  • NEMA 4 rated enclosure

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

There is an alternative adjustable sensitivity version of Dust Level Sensor available.


Dust Level Sensor

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

Different versions available.





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