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OKA-A • Duct backdraught shutters

  • Duct mounting
  • Circular
  • Steel and aluminium
  • Galvanized natural finish
  • Mounting between ducts

Galvanized steel circular backdraught shutters with aluminium blades for mounting in between 2 ducts

Brand

  • Cairox

Application

  • For airflow control in ventilation systems
  • The aluminium blades will open when blades are exposed to overpressure and will shut again when pressure falls away thanks to a stainless steel mechanical spring
  • Temperature usage up to 50°C

Material

  • Galvanized steel and aluminium

Composition

  • Body made of galvanized steel
  • Blades made of aluminium
  • Stainless steel springs

Colour

  • Galvanized natural finish

Mounting

  • It is recommended to install the shutter into horizontal ducting
  • Shutter spindle should be vertical
  • The shutter is installed into piping by simple slide-in

Text for tender

Copy
  • The backdraught shutters for round ducts shall be of the type with galvanized steel body and aluminium blades. They will be mounted in between two ducts to prevent backdraught when the fan stops.
  • CAIROX Type OKA-A

Order example

  • OKA-A, 200

Explanation

OKA-A = Type backdraught damper

200 = Connection diameter

Artikelen

Article selection assistant
Type
Type
Article number Type Type E-shop
I040102201000 RNFLA 200 200
I040102253000 RNFLA 250 250
I040102302000 RNFLA 300 300
I040102353000 RNFLA 350 350
I040102403000 RNFLA 400 400
I040102455000 RNFLA 450 450
I040102503000 RNFLA 500 500

Pressure loss diagram

Dimensions

ØN [mm]

L [mm]

L1 [mm]

OKA-A 100

96

88

6

OKA-A 125

121

88

19

OKA-A 150

146

88

31

OKA-A 160

155

88

36

OKA-A 180

178

88

46

OKA-A 200

197

88

56

OKA-A 250

247

128

61

OKA-A 315

312

128

94

OKA-A 355

352

198

65

OKA-A 400

397

198

94

OKA-A 450

447

248

80

OKA-A 500

497

248

107

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