We are the first manufacturer of IRIS damper in China and now the factory has full sizes of the iris dampers from 80-800mm;The factory has all the molds for this products and can provide customers with the most competitive factory price and high quality.

Application
For air volume control and measurement in ventilation and air conditioning systems. 
The diaphragm valve ensures a perfect accordance between the diameter indication on the handle and the opening of the valve

Unique features:
• Range Ø80 - Ø800 mm
• Precise flow measurement
• Operation independent of flow direction
• Secured to the ducting with rivets
• Can be opened 100% to facilitate duct cleaning
• Air tightness class: C
•The joining collars are supplied with rubber sealing gasket

Materials and Composition:
1) Size: from dia. 80 to 800mm                  
2) Body & valve material: DX53 D+ Z275, sealing gasket is EPDM, with plastic regulator and handle
3) Stainless steel maerial is also available(for high-end market)
                                           
3) Thickness: 0.6mm for dia.80-315mm, 1.0mm for 400-800mm.                          
4) Colour of the plastic quadrant: orange & yellow are available. 

Mounting
To be mounted in between two ducts according to mounting instructions
To be set on desired air volume according to set-table (joined with each damper)

Text for tender
The air volume control dampers shall be of the circular diaphragm type, suitable for medium and high pressure systems. They're made of galvanized sheet steel or stainless steel
ATC Type IRIS 

Contact information:
Thanks & Regards
MS Zhang
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Ningbo Aier Ventilation Equipment Co.,Ltd
Yuyao Jingqiao Hardware Factory 
Add:Beijiao Yangming Jiedao, Yuyao, Zhejiang, China
P.O.:315400 
Mobile:0086 15316291787
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Company information:

The Largest manufacturer of Ventilation Equipment and Accessories in Zhejiang Province, China.Established in 1996, Ningbo Aier Ventilation Equipment Co., Ltd has been developed as one of the leading Chinese exporter of ventilation equipment and accessories for HVAC system. Set up by Yuyao Jingqiao Hardware Manufacturer(JH Stamping Company), Aier has another huge advantage in producing custom metal stamped components. Aier is exporting more than 95% of its products such as Iris damper volume controld damper, metal exhasut/supply air valve, access panel/door, suspension ring, corner, corner clamp(G-clamps), swirl diffuser, holder, regulator and etc. 


Aier enjoys a reputation for excellence thanks to its: 

1. Customer satisfaction orientated strategy

2. Professional R&D staff with customized service

3. Continuous investment in production machinery and facilities

4. Own a full set of equipments and complete testing instruments

5. Automated production processes from the very first to very last production run. 

6. Supports from the local government for innovative development

With 20 years experience, 160 manufacturing staff, 13, 000 squares factory, Aier is now focusing on manufacturing HVAC accessories and Customized Stamping Components and becoming the best choice for the customers.