Roof ventilator

Product Overview:
This Product is a non-powered turbine-type rooftop natural ventilator (commonly known as a stainless steel wind ball / non-powered wind cap). It relies on the dual driving forces of natural wind and thermal convection caused by the temperature difference between indoors and outdoors to rotate the turbine. By leveraging the centrifugal negative-pressure effect, it continuously exhausts high-temperature waste gases, moisture, and odorous gases from workshops and buildings, all without electricity, zero energy consumption, and no operational noise.
The main body is integrally stamped from 201/304/316 stainless steel, offering resistance to rain and snow corrosion and excellent aging resistance. It combines ventilation, rain and dust protection, and explosion‑proof safety features, making it a mainstream solution for energy‑efficient ventilation in industrial plants and civil buildings. It effectively addresses indoor issues such as stuffiness, humidity, condensation, and the accumulation of harmful gases.
Core Advantages of the Products:
Energy-saving and zero power consumption: No motorized components; it relies on natural wind and thermal buoyancy to provide automatic ventilation, resulting in zero electricity costs over long-term use.
Excellent rainproof sealing: When the curved, staggered blades rotate, they automatically seal the gaps, preventing rainwater from backflowing into the interior.
Silent and explosion-proof: No mechanical friction sparks, making it suitable for flammable and explosive environments; operation is free of noise pollution.
Easy installation: It is directly fastened to the roof through pre-drilled holes, resulting in a short construction period and virtually maintenance-free operation thereafter.

Mainstream model specifications (classified by outlet inner diameter)

Material selection options:
Economy grade: 201 stainless steel (0.6–0.8 mm), preferred for dry indoor workshops;
Universal type: 304 stainless steel (0.8–1.0 mm), standard configuration for rainy and humid regions and food processing plants;
Corrosion‑resistant type: 316 stainless steel (1.0–1.2 mm), specially designed for chemical processing, coastal salt‑spray environments, and pickling workshops.
Applicable use cases:
1. Industrial Buildings (Primary Application)
Steel‑structure factories, hardware‑processing workshops, plastic injection‑molding facilities, textile‑printing and chemical‑processing plants, and foundries—quickly exhaust equipment‑generated heat, cooking fumes, and volatile harmful gases. Warehouses, grain storage facilities, and cold storage rooms—reduce internal humidity and prevent goods from becoming damp and moldy. Livestock farms (chicken houses, pigsties)—provide ventilation to remove ammonia and lower high temperatures and humidity within the animal housing.
2. Civil and Public Buildings
Villa attics, flues in high-rise residential buildings, underground garages, and farmers’ markets—addressing stuffiness and moisture backflow; rooftops of schools, shopping malls, and gymnasiums—providing supplemental natural ventilation for cooling and reducing air-conditioning loads.
3. Special Industry Scenarios
Boiler rooms, dyeing and printing plants, electroplating workshops, and flammable or explosive production areas (free of electrical sparks, with explosion-proof ventilation); seafood markets and bathhouses—efficiently remove water vapor to prevent condensation and dripping on building ceilings.
Additional selection recommendations:
In high-temperature, dusty workshops, prioritize DN600 and larger‑diameter models; in humid coastal or chemical‑process environments, stainless steel grades 304 or 316 are recommended.

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