Double Blade Square Isolation Air Damper

The Double Blade Square Isolation Air Damper is a heavy-duty,high-tightness airflow isolation device specially designed for square ventilation duct systems.Different from ordinary multi-vane regulating dampers,it adopts a professional double-blade closed structure,focusing onairtight isolation and complete airflow cut-off rather than fine air volume regulation.

This damper is mainly used for fully isolating ventilation pipelines,cutting off air convection,and preventing cross-air leakage between different air zones.It can be matched with manual,electric,pneumatic and explosion-proof actuators to realize automatic opening and closing.Widely applicable to industrial workshops,chemical plants,power plants,building HVAC systems and smoke exhaust fire protection systems,it is a core supporting component for safe isolation of ventilation pipelines.

Core Features

1.Ultra-high Airtight Isolation Performance

Adopts double-blade fitting sealing design with high-elastic EPDM sealing gaskets on the frame and blade contact surfaces.The closed fitting gap is extremely small,effectively reducing air leakage to the minimum.It meets international high-standard airtightness requirements,thoroughly isolates airflow and prevents air channeling,cross-ventilation and flue gas backflow.

2.Reinforced Double-blade Structural Design

The double-blade synchronous linkage structure features strong rigidity,uniform stress and no deformation under high wind pressure.Compared with single-blade dampers,it has stronger wind resistance and structural stability,can withstand high static wind pressure in industrial ducts,and maintains stable sealing performance for a long time without jamming.

3.Durable Industrial-grade Material

The main frame and blades are made of high-quality galvanized steel,aluminum alloy or stainless steel as optional materials,with excellent anti-corrosion,rust-proof and oxidation resistance.Equipped with wear-resistant stainless steel rotating bearings,the opening and closing operation is smooth and noiseless,with low failure rate and long service life,adapting to long-term continuous operation in harsh industrial environments.

4.Diversified Control&Easy Installation

Supports multiple control modes including manual locking control,electric automatic control and pneumatic drive control,and can be equipped with explosion-proof actuators for hazardous areas.The standard square flange interface is perfectly matched with conventional square ducts,featuring simple and fast on-site installation,no complex debugging,and convenient daily disassembly and maintenance.

5.Wide Application Compatibility

It is not only suitable for conventional building ventilation and air conditioning pipeline isolation,but also applicable to fire smoke exhaust cut-off,industrial waste gas pipeline isolation,and air system closed protection in flammable and explosive workshops.It can quickly cut off the air passage in case of emergency to ensure system safety.

Main Applications

-Building HVAC ventilation systems:air zone isolation and pipeline closed cut-off

-Fire protection and smoke exhaust systems:emergency smoke isolation and fire flue gas cut-off

-Industrial factories:chemical,pharmaceutical,power,grain and oil processing workshops

-Special hazardous environments:matched with explosion-proof actuators for explosion-proof ventilation pipeline isolation

Product Advantages

Focusing on isolation and cut-off functions,this double-blade square damper abandons the redundant regulation design of ordinary dampers,and is optimized for airtightness and wind pressure resistance.With simpler linkage structure,higher sealing accuracy and stronger environmental adaptability,it solves the problems of poor sealing and easy air channeling of traditional single-blade dampers,and is the preferred special equipment for safe and efficient isolation of square ventilation ducts.

Concise Version(For Platform Title&Short Description)

Double Blade Square Isolation Air Damper

Heavy-duty square air isolation damper with reinforced double-blade structure and high-tightness sealing design.Specialized for full airflow cut-off and duct isolation,featuring low air leakage,high wind pressure resistance and stable operation.Available in manual/electric/pneumatic control modes.Ideal for HVAC ventilation,fire smoke exhaust and industrial pipeline air isolation systems.