Ventilation Dampers
Ventilation dampers are essential engineering components designed to control, regulate, and shut off airflows in supply, exhaust, and recirculation systems. They ensure uniform air distribution, protect against contamination, maintain specified pressure parameters, and provide zone isolation during emergency situations.
These dampers are used in cleanrooms, laboratories, pharmaceutical, and biotechnological facilities, particularly where the prevention of pathogen spread or the maintenance of a stable microclimate according to GMP requirements is mandatory.
Types of Dampers and Functional Features
Airtight Ventilation Dampers
Designed for complete shut-off of the airflow when system section isolation is required. They are typically used:
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At the system inlet and outlet.
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On specific components: exhaust fans, filters, and airlocks.
The design provides:
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Reliable duct sealing.
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Protection against dust, insects, and other external contaminants.
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Versatility for installation in both horizontal and vertical ducts.
Depending on the configuration, airtight dampers are equipped with:
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Manual Drive: Featuring a control lever and adjustment handle.
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Electric Drive: Utilizing a servo-motor for automated control and integration into SCADA systems.
These are particularly vital in Biosafety Laboratories (BSL) working with Pathogen Groups I–IV, where it is necessary to prevent the escape of dangerous agents during an accident or system maintenance.
Airflow Control Valves
These valves ensure a constant air volume, regardless of pressure fluctuations within the system. They operate on the principle of dynamic pressure compensation: as duct pressure increases, the blade adjusts its position to maintain the set flow rate.
These valves are integrated into the following systems:
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HVAC (Heating, Ventilation, and Air Conditioning);
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Specialized heating and cooling circuits;
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Air purification and high-efficiency filtration;
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Fire safety and emergency exhaust systems;
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Technological process air transport.
They are widely applied in medical device manufacturing, pharmaceuticals, food and chemical industries, and high-tech construction. These devices are a core component of cleanroom ventilation infrastructure, enabling the precise environmental control required to meet ISO 14644-1 cleanliness classes.
Construction and Technical Specifications
All INEX dampers are engineered for high-performance operation in controlled environments:
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Housing: AISI 304/316L stainless steel with optional anti-corrosion coating.
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Airtight Blade: Equipped with EPDM or silicone gaskets for high-integrity sealing.
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Actuation: Manual or electric drives with remote control capabilities.
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Automation: Full integration with Building Management Systems (BMS/SCADA).
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Connection: Flanged or insert-type duct connection.
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Leakage Class: Class C or D according to GOST 12.3.018 and DIN EN 1751.
The equipment is resistant to aggressive disinfectants, operates in temperatures from –20 to +60 °C (optionally up to +120 °C), and withstands pressure differentials up to 2500 Pa.
Areas of Application
Pharmaceutical manufacturing (GMP Zones A–D);
Biotechnological and high-pathogen containment laboratories;
Cleanrooms with multi-level pressure cascades;
Facilities with high sanitary-hygienic requirements;
Zones with high risks of aerosolized pathogen dispersal.
Regulatory Compliance
The equipment is designed and manufactured in accordance with:
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GOST 12.3.018–79 — Occupational safety standards. Pipeline valves. Methods for determining airtightness.
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ISO 14644-4:2023 — Cleanrooms and associated controlled environments — Part 4: Design, construction, and start-up.
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TR CU 010/2011 — On the safety of machinery and equipment.
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PUE (Electrical Installation Regulations) — Safety requirements for electrical installations in hazardous areas, including ventilation handling flammable liquids (FL) or pathogens.