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Sistemas de Distribuição de Ar para Sala Limpa
Válvula de controle de fluxo de ar Venturi
A characterized stainless Venturi valve whose spring-compensated cone preserves the commanded airflow as duct static pressure varies.
- Pressure-Independent Flow Response
- Spring-Compensated Venturi Cone
- Fast Commanded Repositioning
- Corrosion-Resistant Air Path
Introdução do produto
The Venturi airflow control valve uses a shaped throat and movable cone to create a repeatable relationship between cone position and airflow. A mechanical spring shifts the cone in response to duct-pressure change, while the actuator establishes the opening required by the control command. Because pressure compensation occurs inside the valve body, the controller can respond without continuously deriving airflow from a separate duct sensor. Stainless wetted components and an external actuator make the assembly suitable for supply, general exhaust and laboratory exhaust duties.
Características-chave
Mechanical spring compensation reacts directly to static-pressure variation before the room-pressure loop drifts.
A fast external actuator supports fume-hood tracking and rapid room supply-to-exhaust balance changes.
Smooth stainless internal surfaces and external drive components reduce residue traps in demanding exhaust service.
Preocupações do produto do cliente
Critical-room airflow control must remain repeatable through duct-pressure swings, react quickly to demand and tolerate contaminants without a drifting measurement element.
A fan-speed change alters several branch flows before the room pressure loop can recover.The spring-loaded cone compensates mechanically for the duct-pressure change at each valve.
Fume-hood sash movement requires a large exhaust change within seconds.A characterized cone and fast actuator move directly to the airflow position commanded by the hood controller.
Dust or chemical residue blocks small pressure-sensor ports in an exhaust branch.The pressure-independent cone mechanism controls flow without small in-stream averaging taps.
Mismatched supply and exhaust response reverses the intended room pressure direction.Coordinated valve commands and known flow-position curves maintain the scheduled offset between room air paths.
Aplicações típicas
Pharmaceutical room pressure controlLaboratory fume-hood exhaustCleanroom supply and return trackingAnimal research ventilationHealthcare isolation-room airflow
Parâmetros técnicos
Representative construction ranges for a stainless Venturi airflow control valve are shown below.
| Material principal | 304 or 316 stainless-steel Venturi body with spring-compensated cone and stainless linkage |
|---|---|
| Painel de espessura | 1.0–1.5 mm formed Venturi body wall |
| Largura efetiva | 152–356 mm nominal round duct diameter |
| Comprimento máximo | Up to 1200 mm overall body length including transition sections |
| Aço enfrentando espessura | 1.2–2.0 mm stainless mounting flange and actuator support plates |
| Densidade Core | Approximately 8000 kg/m³ for 304 or 316 stainless-steel airflow components |
| Condutividade térmica | 14–16 W/(m·K) through the 304 or 316 stainless Venturi body at room temperature |
| Superfície acabado | Smooth mill-finish or passivated stainless air path with protected external actuator |
| Tipo conjunto | Round flanged or slip-fit Venturi body with guided cone shaft and external direct-coupled linkage |
| Customização | Disponível com base na aplicação pretendida e no ambiente operacional. |
Opções disponíveis
Constant-volume or variable-volume controlSupply, general exhaust or coated corrosive-exhaust constructionAnalog or BACnet-compatible controllerFail-safe actuator and position feedback
Planning a Venturi Airflow Control Valve specification?
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