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Sistemas de Distribuição de Ar para Sala Limpa
Motorizado Shut-Off Damper
A compact circular isolation damper whose electric or pneumatic actuator rotates one sealed blade between defined open and closed positions.
- Positive Open-Close Operation
- Sealed Single Butterfly Blade
- Selectable Spring-Return Position
- External End-Position Indication
Introdução do produto
The motorized shut-off damper inserts a single circular blade into a short galvanized duct body. A direct-mounted actuator rotates the shaft through approximately ninety degrees to isolate or restore airflow. A perimeter blade seal reduces closed leakage, and the shaft mark provides a mechanical position reference visible outside the duct. Spring-return actuator versions move to the specified open or closed position when power or control pressure is lost, while auxiliary switches can confirm the endpoints.
Características-chave
The single blade and direct shaft connection provide a simple open-close movement with few linkage components.
A compressible perimeter seal restricts leakage around the circular blade in the commanded closed position.
Spring-return and end-switch options support fail-position sequences and remote proof of isolation.
Preocupações do produto do cliente
Reliable shut-off requires the correct fail position, enough actuator torque for seal compression and access to the drive after insulation and ceiling closure.
A modulating damper is used for isolation but never reaches a repeatable sealed endpoint.Defined open-close end stops and a matched actuator focus the mechanism on dependable shut-off travel.
Loss of control power leaves the process branch open.A spring-return actuator moves the blade to the selected normally closed safety position.
Duct insulation hides the shaft mark and actuator release.An extended mounting bracket keeps position indication, wiring and manual override outside the insulation layer.
Excessive differential pressure twists the shaft before the seal seats.Blade diameter, shaft size and actuator torque are selected together for the maximum closed pressure.
Aplicações típicas
Cleanroom branch shutdownLaboratory exhaust isolationEquipment purge and standby ductsAirlock supply and return isolationSmall process ventilation connections
Parâmetros técnicos
Representative construction ranges for a circular motorized shut-off damper are shown below.
| Material principal | Galvanized or stainless-steel circular butterfly blade with elastomer perimeter seal and steel shaft |
|---|---|
| Painel de espessura | 1.0–1.5 mm single shut-off blade |
| Largura efetiva | 80–630 mm nominal circular duct diameter |
| Comprimento máximo | 200–500 mm overall casing length in the airflow direction |
| Aço enfrentando espessura | 0.8–1.2 mm galvanized or stainless circular casing |
| Densidade Core | Approximately 7850 kg/m³ for the steel blade and shaft assembly |
| Condutividade térmica | Approximately 45–55 W/(m·K) for galvanized carbon-steel construction |
| Superfície acabado | Mill-galvanized, powder-coated or passivated stainless-steel air path |
| Tipo conjunto | Round slip-fit or flanged casing with sealed butterfly blade and direct external actuator |
| Customização | Disponível com base na aplicação pretendida e no ambiente operacional. |
Opções disponíveis
Electric or pneumatic actuatorNormally open or normally closed spring returnAuxiliary open-close switchesGalvanized, powder-coated or stainless-steel construction
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