Product Introduction:                                                                                                       

The iris damper is an ideal air flow regulator and measuring device for circular ducts, the diaphragm valve ensures a perfect accordance between the diameter indication on the handle and the opening of the valve, in the fully open position the iris damper provides 100% free area with on control mechanism in the airstream allowing easy and effective cleaning of the duct work system. Available in sizesφ80-800mm

Product Features:

1. Quick and simple installation and maintenance.

2. Extended spigot connections

3. 100% opening capacity

4. Low noise generation

5. Good air tightness

6. Linear choking for simple operation

7. High accuracy and excellent adjustment properties.

 

Material:

The body and valve are made of galvanized steel sheet

Seal ring is made of EPDM

 

Composition:

Body and valve are made of galvanized sheet steel

Plastic regulator nut with plastic key

Measuring point on either side of the valve for connection of manometer.

Sticker with selection graph, mentioning the air volume at the different opening positions of the valve and the according pressure level.

Flexible joints for air tightness when placed inside the duct.

 

Damper Mounting:

The damper must be installed in accordance with the distances required to minimize air flow deviation. Reducing or enlarging to the duct to the next duct size does not require any specified distances for minimizing deviation. IRIS enables the taking of precise air flow measurements at all points including points close to duct deviations such as T junctions and bends and points in front of other supply air devices,.

 

Dimension Data:

 

Size	Φ d (mm)	Φ D (mm)	L (mm)	A (mm)	Thickness (mm)	Weight
80	79	125	115	33	0.6	0.5
100	99	165	115	27	0.6	0.65
125	124	188	115	27	0.6	0.8
150	149	230	115	27	0.6	1.0
160	159	230	115	27	0.6	1.4
200	199	285	120	27	0.6	1.7
250	249	335	135	33	0.6	2.1
300	299	405	140	33	0.6	2.5
315	314	405	140	33	0.6	3.2
400	398	525	150	46	1.0	7.2
500	498	655	150	46	1.0	11
630	628	815	155	46	1.0	18
800	798	1015	285	110	1.0	26

Construction

The IRIS is composed of regulation plates, regulating nut or handle (size 80) and regulation scale plus manometer connections and casing.

The casing and regulation plates are made of hot galvanized steel (standard IRIS) or acid-proof steel AISI 316 L (IRIS-S), other components of plastic. The joining collars are supplied with rubber sealing gasket.

 

Use

IRIS is an ideal solution for the exact and quick air flow measuring and regulation.Because of its acid proof material, the IRIS-S is best suited for premises, where acid proof ducts are used.

 

Installation

The IRIS damper is secured to the ducting with rivets. For vertical mounting ensure the weight of the interconnecting ductwork is fully supported.

 

Protective Distance:

before bends  1 x Diameter.

after bends   1 x Diameter.

before T-pipes 3 x Diameter.

after T-pipes  1 x Diameter.

before supply-air devices 3 x Diameter.