NOVEx – Explosion Isolation Flap Valve

The NOVEx explosion isolation flap valve effectively stops explosions from propagating through ducts, protecting the rest of the equipment in the facility.

The NOVEx explosion isolation flap valve effectively stops explosions from propagating through ducts, protecting the rest of the equipment in the facility.

During normal operation, the flap stays open, minimizing pressure drop and maintaining system performance. If an explosion occurs downstream (e.g., in a dust collector), the expanding combustion gases and overpressure push the flap closed, creating a barrier that isolates and protects the upstream equipment in the facility.

Its robust design ensures high reliability and reduces pressure drop by up to 80% compared to normally closed valves. A broad range of accessories is also available, allowing flexible configurations and upgrades to meet the specific needs of each facility.

  • Suitable for: organic and metal dusts up to St3 and Kst 440 bar·m/s
  • Installation: horizontal
  • Sizes: 2.8″ to 39.4″ (71 to 1000 mm) (DIN 24154)
  • Material: carbon steel or stainless steel
  • Maximum dust concentration in the duct: < 0.50 oz/ft³ (500 g/m³)
  • Maximum allowable Pred: 29 psig (2 barg) for DN ≤ 500 mm (19.7″) – 14.5 psig (1 barg) for DN > 500 mm (19.7″)
  • Safety distances: DN ≤ 500 mm (19.7″): 9.8 to 32.8 ft (3 to 10 m) // DN > 500 mm (19.7″): 16.4 to 42.7 ft (5 to 13 m)
  • ATEX marking: Ex D
  • ATEX certificate: LOM11ATEX7047x)/2 in accordance with EN 16447:2014. Contact us about accessories for NFPA 69 compatibility
Dimensional drawing of the NOVEx explosion isolation flap valve
Reference
Diameter
External Dimensions
  • NOVEx071
    2.8″ (71 mm)
    17.3″ × 13.7″ × 10.4″ (440 × 349 × 265 mm)
  • NOVEx080
    3.1″ (80 mm)
    17.7″ × 14.1″ × 10.8″ (449 × 358 × 274 mm)
  • NOVEx100
    3.9″ (100 mm)
    18.5″ × 15.2″ × 11.6″ (469 × 386 × 294 mm)
  • NOVEx125
    4.9″ (125 mm)
    19.4″ × 15.9″ × 12.6″ (494 × 403 × 319 mm)
  • NOVEx150
    5.9″ (150 mm)
    20.4″ × 16.9″ × 13.5″ (519 × 428 × 344 mm)
  • NOVEx180
    7.1″ (180 mm)
    21.6″ × 18.0″ × 14.7″ (549 × 458 × 374 mm)
  • NOVEx200
    7.9″ (200 mm)
    22.4″ × 19.1″ × 15.5″ (569 × 486 × 394 mm)
  • NOVEx250
    9.8″ (250 mm)
    24.4″ × 23.6″ × 19.4″ (619 × 600 × 493 mm)
  • NOVEx280
    11.0″ (280 mm)
    25.6″ × 25.5″ × 20.6″ (649 × 647 × 523 mm)
  • NOVEx300
    11.8″ (300 mm)
    26.3″ × 25.6″ × 21.4″ (669 × 650 × 543 mm)
  • NOVEx315
    12.4″ (315 mm)
    26.9″ × 27.7″ × 22.0″ (684 × 703 × 560 mm)
  • NOVEx355
    14.0″ (355 mm)
    28.5″ × 29.2″ × 23.6″ (724 × 742 × 600 mm)
  • NOVEx400
    15.7″ (400 mm)
    30.3″ × 31.0″ × 25.4″ (769 × 788 × 645 mm)
  • NOVEx450
    17.7″ (450 mm)
    32.2″ × 33.0″ × 27.4″ (819 × 837 × 695 mm)
  • NOVEx500
    19.7″ (500 mm)
    34.2″ × 35.0″ × 29.3″ (869 × 888 × 745 mm)
  • NOVEx560
    22.0″ (560 mm)
    36.5″ × 39.4″ × 33.1″ (928 × 1000 × 841 mm)
  • NOVEx600
    23.6″ (600 mm)
    38.1″ × 40.9″ × 34.9″ (969 × 1040 × 887 mm)
  • NOVEx630
    24.8″ (630 mm)
    39.4″ × 42.3″ × 35.7″ (1000 × 1074 × 906 mm)
  • NOVEx710
    28.0″ (710 mm)
    42.5″ × 45.4″ × 39.6″ (1079 × 1153 × 1007 mm)
  • NOVEx800
    31.5″ (800 mm)
    46.0″ × 48.9″ × 43.2″ (1169 × 1243 × 1097 mm)
  • NOVEx900
    35.4″ (900 mm)
    50.0″ × 52.9″ × 47.1″ (1269 × 1343 × 1197 mm)
  • NOVEx1000
    39.4″ (1000 mm)
    53.9″ × 56.8″ × 51.1″ (1369 × 1443 × 1297 mm)

For other sizes or operating conditions, please contact Adix

Have a question?

Contact us and our engineering team will get back to you.