NOVEx II – Explosion Isolation Flap Valve

The NOVEx II explosion isolation flap valve is a mechanical isolation system designed to stop an explosion from propagating through process ducts, protecting the rest of the facility.

The NOVEx II explosion isolation flap valve is a passive mechanical isolation system designed to stop an explosion from propagating through process ducts, protecting the rest of the facility.

During a deflagration, the overpressure pushes the flap, which closes instantly and blocks the flame front and combustion gases, preventing them from reaching upstream equipment such as silos, cyclones or dust collectors.

The NOVEx II can be installed in horizontal or vertical ducts (up to 90°), in both pressure (“push”) and suction (“pull”) systems. Its compact design makes it easy to fit into tight spaces, and its normally open flap significantly reduces pressure drop during normal system operation.

A wide range of accessories is available to monitor the valve’s operating status and ensure reliable performance over time: position sensors, wear sensors, dust buildup sensors and an automatic cleaning system.

  • Dust type: all dust types, including organic and metal dusts. Kst ≤ 305 bar·m/s, Pmax ≤ 133 psig (9.2 bar), MIE ≥ 1 mJ, MIT ≥ 230 °F (110 °C), MESG = 0.042 in (1.065 mm)
  • Material: painted carbon steel / AISI 304, AISI 316 or AISI 310 stainless steel / wear-resistant steel
  • Sizes: 3.9″ to 49.2″ (DN 100 to DN 1250)
  • Flange: per DIN 24154/R2, T2
  • Installation: horizontal, vertical or inclined
  • Mounting: PULL or PUSH
  • Elbows in the system: multiple elbows are allowed as long as the sum of their angles does not exceed 270°, with a minimum radius-to-diameter ratio of 0.65.
  • Distance on the protected side: DN < 500 mm (19.7"): straight duct run of at least 5 × D (diameter). DN ≥ 500 mm (19.7"): no specific minimum length is required
  • Operating temperature: from -4 °F (-20 °C) (to prevent the product from freezing) to +194 °F (+90 °C) (contact us for other temperatures).
  • Air velocity (PUSH): 100 ≤ DN ≤ 500: 3,540 ft/min (18 m/s) // 500 < DN ≤ 1250: 1,970 ft/min (10 m/s)
  • Dust concentration: maximum 0.50 oz/ft³ (500 g/m³)
  • Operating pressure: maximum 2.90 psig (200 mbar)
  • Vacuum operating pressure: -2.90 psig (-200 mbar)
  • Certification: EN 16447 and EN 15089. NFPA 69 compatibility (special considerations apply to comply with NFPA 69; contact us.)
  • ATEX marking: Ex II D EN 16447. LOM 22ATEX1035X
Dimensional drawing of the NOVEx II explosion isolation flap valve
Reference
Diameter
Dimensions A × B × C
  • NOVExII100
    3.9″ (100 mm)
    12.0″ × 16.7″ × 27.1″ (305 × 425 × 689 mm)
  • NOVExII112
    4.4″ (112 mm)
    10.8″ × 10.9″ × 27.1″ (275 × 276 × 689 mm)
  • NOVExII125
    4.9″ (125 mm)
    10.8″ × 10.9″ × 27.1″ (275 × 276 × 689 mm)
  • NOVExII140
    5.5″ (140 mm)
    10.8″ × 10.9″ × 27.1″ (275 × 276 × 689 mm)
  • NOVExII150
    5.9″ (150 mm)
    12.0″ × 16.7″ × 15.3″ (305 × 425 × 389 mm)
  • NOVExII160
    6.3″ (160 mm)
    11.2″ × 11.3″ × 15.4″ (285 × 286 × 391 mm)
  • NOVExII180
    7.1″ (180 mm)
    12.0″ × 12.0″ × 15.6″ (306 × 306 × 395 mm)
  • NOVExII200
    7.9″ (200 mm)
    14.0″ × 18.7″ × 15.7″ (355 × 475 × 399 mm)
  • NOVExII224
    8.8″ (224 mm)
    9.9″ × 13.8″ × 15.9″ (251 × 350 × 403 mm)
  • NOVEXII250
    9.8″ (250 mm)
    15.9″ × 20.7″ × 16.1″ (405 × 525 × 408 mm)
  • NOVExII280
    11.0″ (280 mm)
    16.1″ × 16.0″ × 16.3″ (408 × 406 × 414 mm)
  • NOVExII300
    11.8″ (300 mm)
    16.9″ × 16.8″ × 16.5″ (429 × 426 × 418 mm)
  • NOVExII315
    12.4″ (315 mm)
    17.5″ × 17.4″ × 16.5″ (444 × 441 × 420 mm)
  • NOVExII355
    14.0″ (355 mm)
    20.1″ × 24.8″ × 16.9″ (510 × 630 × 428 mm)
  • NOVExII400
    15.7″ (400 mm)
    21.9″ × 26.6″ × 17.2″ (555 × 675 × 436 mm)
  • NOVExII450
    17.7″ (450 mm)
    23.0″ × 22.7″ × 17.7″ (584 × 576 × 450 mm)
  • NOVExII500
    19.7″ (500 mm)
    25.8″ × 29.9″ × 18.6″ (655 × 760 × 473 mm)
  • NOVExII560
    22.0″ (560 mm)
    27.6″ × 27.0″ × 21.4″ (700 × 686 × 544 mm)
  • NOVExII600
    23.6″ (600 mm)
    29.2″ × 28.6″ × 22.8″ (741 × 726 × 580 mm)
  • NOVExII630
    24.8″ (630 mm)
    30.9″ × 35.6″ × 23.9″ (785 × 904 × 607 mm)
  • NOVExII710
    28.0″ (710 mm)
    34.1″ × 38.7″ × 26.7″ (865 × 984 × 679 mm)
  • NOVExII800
    31.5″ (800 mm)
    37.4″ × 36.5″ × 29.9″ (949 × 926 × 759 mm)
  • NOVExII900
    35.4″ (900 mm)
    41.5″ × 46.2″ × 33.4″ (1055 × 1174 × 849 mm)
  • NOVExII1000
    39.4″ (1000 mm)
    45.5″ × 50.2″ × 37.0″ (1155 × 1274 × 939 mm)
  • NOVExII1120
    44.1″ (1120 mm)
    50.4″ × 49.1″ × 41.2″ (1281 × 1246 × 1046 mm)
  • NOVExII1250
    49.2″ (1250 mm)
    55.3″ × 60.0″ × 45.8″ (1405 × 1524 × 1163 mm)

For other sizes or operating conditions, please contact Adix

Have a question?

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