No Return Valve & Explosion Diverter (EM-NRV / EV-VDIV)

Two more passive ways to keep an explosion from traveling your ductwork. The EM-NRV No Return Valve prevents backflow during an explosive event — pressure and flame can’t push back upstream through the line. The EV-VDIV Explosion Diverter routes a propagating blast up and away from critical equipment and personnel instead of letting it continue downstream.

Key Features:

• Passive, always-on protection: No power, no sensors — physics does the work.
• EM-NRV backflow prevention: Stops explosion pressure from driving back into upstream equipment.
• EV-VDIV blast routing: Diverts flame and pressure to a safe discharge path.
• NFPA compliant, FM/UL approved: Certified components for your compliance file.
• Pairs with venting: Combine with VIGILEX® panels for a complete NFPA 68/69 strategy.

Ready to Order?

Add this to your quote list with your vessel or duct details in the message box, and our team will size the system and come back with pricing — and NFPA-compliant design help.